// Copyright 2019 PingCAP, Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // See the License for the specific language governing permissions and // limitations under the License. package bindinfo_test import ( "context" "crypto/tls" "flag" "fmt" "os" "strconv" "testing" "time" . "github.com/pingcap/check" "github.com/pingcap/parser" "github.com/pingcap/parser/auth" "github.com/pingcap/parser/model" "github.com/pingcap/parser/terror" "github.com/pingcap/tidb/bindinfo" "github.com/pingcap/tidb/domain" "github.com/pingcap/tidb/kv" "github.com/pingcap/tidb/meta/autoid" "github.com/pingcap/tidb/metrics" "github.com/pingcap/tidb/session" "github.com/pingcap/tidb/store/mockstore" "github.com/pingcap/tidb/store/mockstore/mocktikv" "github.com/pingcap/tidb/util" "github.com/pingcap/tidb/util/logutil" "github.com/pingcap/tidb/util/stmtsummary" "github.com/pingcap/tidb/util/testkit" "github.com/pingcap/tidb/util/testleak" dto "github.com/prometheus/client_model/go" ) func TestT(t *testing.T) { CustomVerboseFlag = true logLevel := os.Getenv("log_level") logutil.InitLogger(logutil.NewLogConfig(logLevel, logutil.DefaultLogFormat, "", logutil.EmptyFileLogConfig, false)) autoid.SetStep(5000) TestingT(t) } var _ = Suite(&testSuite{}) type testSuite struct { cluster *mocktikv.Cluster mvccStore mocktikv.MVCCStore store kv.Storage domain *domain.Domain *parser.Parser } type mockSessionManager struct { PS []*util.ProcessInfo } func (msm *mockSessionManager) ShowProcessList() map[uint64]*util.ProcessInfo { ret := make(map[uint64]*util.ProcessInfo) for _, item := range msm.PS { ret[item.ID] = item } return ret } func (msm *mockSessionManager) GetProcessInfo(id uint64) (*util.ProcessInfo, bool) { for _, item := range msm.PS { if item.ID == id { return item, true } } return &util.ProcessInfo{}, false } func (msm *mockSessionManager) Kill(cid uint64, query bool) { } func (msm *mockSessionManager) KillAllConnections() { } func (msm *mockSessionManager) UpdateTLSConfig(cfg *tls.Config) { } func (msm *mockSessionManager) ServerID() uint64 { return 1 } var mockTikv = flag.Bool("mockTikv", true, "use mock tikv store in bind test") func (s *testSuite) SetUpSuite(c *C) { testleak.BeforeTest() s.Parser = parser.New() flag.Lookup("mockTikv") useMockTikv := *mockTikv if useMockTikv { s.cluster = mocktikv.NewCluster() mocktikv.BootstrapWithSingleStore(s.cluster) s.mvccStore = mocktikv.MustNewMVCCStore() store, err := mockstore.NewMockTikvStore( mockstore.WithCluster(s.cluster), mockstore.WithMVCCStore(s.mvccStore), ) c.Assert(err, IsNil) s.store = store session.SetSchemaLease(0) session.DisableStats4Test() } bindinfo.Lease = 0 d, err := session.BootstrapSession(s.store) c.Assert(err, IsNil) d.SetStatsUpdating(true) s.domain = d } func (s *testSuite) TearDownSuite(c *C) { s.domain.Close() s.store.Close() testleak.AfterTest(c)() } func (s *testSuite) TearDownTest(c *C) { tk := testkit.NewTestKit(c, s.store) tk.MustExec("use test") r := tk.MustQuery("show tables") for _, tb := range r.Rows() { tableName := tb[0] tk.MustExec(fmt.Sprintf("drop table %v", tableName)) } } func (s *testSuite) cleanBindingEnv(tk *testkit.TestKit) { tk.MustExec("truncate table mysql.bind_info") s.domain.BindHandle().Clear() } func (s *testSuite) TestBindParse(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("create table t(i int)") tk.MustExec("create index index_t on t(i)") originSQL := "select * from t" bindSQL := "select * from t use index(index_t)" defaultDb := "test" status := "using" charset := "utf8mb4" collation := "utf8mb4_bin" source := bindinfo.Manual sql := fmt.Sprintf(`INSERT INTO mysql.bind_info(original_sql,bind_sql,default_db,status,create_time,update_time,charset,collation,source) VALUES ('%s', '%s', '%s', '%s', NOW(), NOW(),'%s', '%s', '%s')`, originSQL, bindSQL, defaultDb, status, charset, collation, source) tk.MustExec(sql) bindHandle := bindinfo.NewBindHandle(tk.Se) err := bindHandle.Update(true) c.Check(err, IsNil) c.Check(bindHandle.Size(), Equals, 1) sql, hash := parser.NormalizeDigest("select * from t") bindData := bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t") bind := bindData.Bindings[0] c.Check(bind.BindSQL, Equals, "select * from t use index(index_t)") c.Check(bindData.Db, Equals, "test") c.Check(bind.Status, Equals, "using") c.Check(bind.Charset, Equals, "utf8mb4") c.Check(bind.Collation, Equals, "utf8mb4_bin") c.Check(bind.CreateTime, NotNil) c.Check(bind.UpdateTime, NotNil) dur, err := bind.SinceUpdateTime() c.Assert(err, IsNil) c.Assert(int64(dur), GreaterEqual, int64(0)) // Test fields with quotes or slashes. sql = `CREATE GLOBAL BINDING FOR select * from t where i BETWEEN "a" and "b" USING select * from t use index(index_t) where i BETWEEN "a\nb\rc\td\0e" and 'x'` tk.MustExec(sql) tk.MustExec(`DROP global binding for select * from t use index(idx) where i BETWEEN "a\nb\rc\td\0e" and "x"`) // Test Update / Delete. tk.MustExec("create table t1(a int, b int, c int, key(b), key(c))") tk.MustExec("create table t2(a int, b int, c int, key(b), key(c))") tk.MustExec("create binding for delete from t1 where b = 1 and c > 1 using delete /*+ use_index(t1, c) */ from t1 where b = 1 and c > 1") tk.MustExec("drop binding for delete from t1 where b = 1 and c > 1 using delete /*+ use_index(t1, c) */ from t1 where b = 1 and c > 1") tk.MustExec("create binding for delete t1, t2 from t1 inner join t2 on t1.b = t2.b where t1.c = 1 using delete /*+ hash_join(t1, t2), use_index(t1, c) */ t1, t2 from t1 inner join t2 on t1.b = t2.b where t1.c = 1") tk.MustExec("drop binding for delete t1, t2 from t1 inner join t2 on t1.b = t2.b where t1.c = 1 using delete /*+ hash_join(t1, t2), use_index(t1, c) */ t1, t2 from t1 inner join t2 on t1.b = t2.b where t1.c = 1") tk.MustExec("create binding for update t1 set a = 1 where b = 1 and c > 1 using update /*+ use_index(t1, c) */ t1 set a = 1 where b = 1 and c > 1") tk.MustExec("drop binding for update t1 set a = 1 where b = 1 and c > 1 using update /*+ use_index(t1, c) */ t1 set a = 1 where b = 1 and c > 1") tk.MustExec("create binding for update t1, t2 set t1.a = 1 where t1.b = t2.b using update /*+ inl_join(t1) */ t1, t2 set t1.a = 1 where t1.b = t2.b") tk.MustExec("drop binding for update t1, t2 set t1.a = 1 where t1.b = t2.b using update /*+ inl_join(t1) */ t1, t2 set t1.a = 1 where t1.b = t2.b") // Test Insert / Replace. tk.MustExec("create binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1 using insert into t1 select /*+ use_index(t2,c) */ * from t2 where t2.b = 1 and t2.c > 1") tk.MustExec("drop binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1 using insert into t1 select /*+ use_index(t2,c) */ * from t2 where t2.b = 1 and t2.c > 1") tk.MustExec("create binding for replace into t1 select * from t2 where t2.b = 1 and t2.c > 1 using replace into t1 select /*+ use_index(t2,c) */ * from t2 where t2.b = 1 and t2.c > 1") tk.MustExec("drop binding for replace into t1 select * from t2 where t2.b = 1 and t2.c > 1 using replace into t1 select /*+ use_index(t2,c) */ * from t2 where t2.b = 1 and t2.c > 1") err = tk.ExecToErr("create binding for insert into t1 values(1,1,1) using insert into t1 values(1,1,1)") c.Assert(err.Error(), Equals, "create binding only supports INSERT / REPLACE INTO SELECT") err = tk.ExecToErr("create binding for replace into t1 values(1,1,1) using replace into t1 values(1,1,1)") c.Assert(err.Error(), Equals, "create binding only supports INSERT / REPLACE INTO SELECT") // Test errors. tk.MustExec(`drop table if exists t1`) tk.MustExec("create table t1(i int, s varchar(20))") _, err = tk.Exec("create global binding for select * from t using select * from t1 use index for join(index_t)") c.Assert(err, NotNil, Commentf("err %v", err)) } func (s *testSuite) TestGlobalBinding(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("drop table if exists t1") tk.MustExec("create table t(i int, s varchar(20))") tk.MustExec("create table t1(i int, s varchar(20))") tk.MustExec("create index index_t on t(i,s)") metrics.BindTotalGauge.Reset() metrics.BindMemoryUsage.Reset() _, err := tk.Exec("create global binding for select * from t where i>100 using select * from t use index(index_t) where i>100") c.Assert(err, IsNil, Commentf("err %v", err)) _, err = tk.Exec("create global binding for select * from t where i>99 using select * from t use index(index_t) where i>99") c.Assert(err, IsNil) pb := &dto.Metric{} metrics.BindTotalGauge.WithLabelValues(metrics.ScopeGlobal, bindinfo.Using).Write(pb) c.Assert(pb.GetGauge().GetValue(), Equals, float64(1)) metrics.BindMemoryUsage.WithLabelValues(metrics.ScopeGlobal, bindinfo.Using).Write(pb) c.Assert(pb.GetGauge().GetValue(), Equals, float64(97)) sql, hash := parser.NormalizeDigest("select * from t where i > 30.0") bindData := s.domain.BindHandle().GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where i > ?") bind := bindData.Bindings[0] c.Check(bind.BindSQL, Equals, "select * from t use index(index_t) where i>99") c.Check(bindData.Db, Equals, "test") c.Check(bind.Status, Equals, "using") c.Check(bind.Charset, NotNil) c.Check(bind.Collation, NotNil) c.Check(bind.CreateTime, NotNil) c.Check(bind.UpdateTime, NotNil) rs, err := tk.Exec("show global bindings") c.Assert(err, IsNil) chk := rs.NewChunk() err = rs.Next(context.TODO(), chk) c.Check(err, IsNil) c.Check(chk.NumRows(), Equals, 1) row := chk.GetRow(0) c.Check(row.GetString(0), Equals, "select * from t where i > ?") c.Check(row.GetString(1), Equals, "select * from t use index(index_t) where i>99") c.Check(row.GetString(2), Equals, "test") c.Check(row.GetString(3), Equals, "using") c.Check(row.GetTime(4), NotNil) c.Check(row.GetTime(5), NotNil) c.Check(row.GetString(6), NotNil) c.Check(row.GetString(7), NotNil) bindHandle := bindinfo.NewBindHandle(tk.Se) err = bindHandle.Update(true) c.Check(err, IsNil) c.Check(bindHandle.Size(), Equals, 1) bindData = bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where i > ?") bind = bindData.Bindings[0] c.Check(bind.BindSQL, Equals, "select * from t use index(index_t) where i>99") c.Check(bindData.Db, Equals, "test") c.Check(bind.Status, Equals, "using") c.Check(bind.Charset, NotNil) c.Check(bind.Collation, NotNil) c.Check(bind.CreateTime, NotNil) c.Check(bind.UpdateTime, NotNil) _, err = tk.Exec("DROP global binding for select * from t where i>100") c.Check(err, IsNil) bindData = s.domain.BindHandle().GetBindRecord(hash, sql, "test") c.Check(bindData, IsNil) metrics.BindTotalGauge.WithLabelValues(metrics.ScopeGlobal, bindinfo.Using).Write(pb) c.Assert(pb.GetGauge().GetValue(), Equals, float64(0)) metrics.BindMemoryUsage.WithLabelValues(metrics.ScopeGlobal, bindinfo.Using).Write(pb) // From newly created global bind handle. c.Assert(pb.GetGauge().GetValue(), Equals, float64(97)) bindHandle = bindinfo.NewBindHandle(tk.Se) err = bindHandle.Update(true) c.Check(err, IsNil) c.Check(bindHandle.Size(), Equals, 0) bindData = bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, IsNil) rs, err = tk.Exec("show global bindings") c.Assert(err, IsNil) chk = rs.NewChunk() err = rs.Next(context.TODO(), chk) c.Check(err, IsNil) c.Check(chk.NumRows(), Equals, 0) _, err = tk.Exec("delete from mysql.bind_info") c.Assert(err, IsNil) _, err = tk.Exec("create global binding for select * from t using select * from t1 use index for join(index_t)") c.Assert(err, NotNil, Commentf("err %v", err)) } func (s *testSuite) TestSessionBinding(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("drop table if exists t1") tk.MustExec("create table t(i int, s varchar(20))") tk.MustExec("create table t1(i int, s varchar(20))") tk.MustExec("create index index_t on t(i,s)") metrics.BindTotalGauge.Reset() metrics.BindMemoryUsage.Reset() _, err := tk.Exec("create session binding for select * from t where i>100 using select * from t use index(index_t) where i>100") c.Assert(err, IsNil, Commentf("err %v", err)) _, err = tk.Exec("create session binding for select * from t where i>99 using select * from t use index(index_t) where i>99") c.Assert(err, IsNil) pb := &dto.Metric{} metrics.BindTotalGauge.WithLabelValues(metrics.ScopeSession, bindinfo.Using).Write(pb) c.Assert(pb.GetGauge().GetValue(), Equals, float64(1)) metrics.BindMemoryUsage.WithLabelValues(metrics.ScopeSession, bindinfo.Using).Write(pb) c.Assert(pb.GetGauge().GetValue(), Equals, float64(97)) handle := tk.Se.Value(bindinfo.SessionBindInfoKeyType).(*bindinfo.SessionHandle) bindData := handle.GetBindRecord("select * from t where i > ?", "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where i > ?") bind := bindData.Bindings[0] c.Check(bind.BindSQL, Equals, "select * from t use index(index_t) where i>99") c.Check(bindData.Db, Equals, "test") c.Check(bind.Status, Equals, "using") c.Check(bind.Charset, NotNil) c.Check(bind.Collation, NotNil) c.Check(bind.CreateTime, NotNil) c.Check(bind.UpdateTime, NotNil) rs, err := tk.Exec("show global bindings") c.Assert(err, IsNil) chk := rs.NewChunk() err = rs.Next(context.TODO(), chk) c.Check(err, IsNil) c.Check(chk.NumRows(), Equals, 0) rs, err = tk.Exec("show session bindings") c.Assert(err, IsNil) chk = rs.NewChunk() err = rs.Next(context.TODO(), chk) c.Check(err, IsNil) c.Check(chk.NumRows(), Equals, 1) row := chk.GetRow(0) c.Check(row.GetString(0), Equals, "select * from t where i > ?") c.Check(row.GetString(1), Equals, "select * from t use index(index_t) where i>99") c.Check(row.GetString(2), Equals, "test") c.Check(row.GetString(3), Equals, "using") c.Check(row.GetTime(4), NotNil) c.Check(row.GetTime(5), NotNil) c.Check(row.GetString(6), NotNil) c.Check(row.GetString(7), NotNil) _, err = tk.Exec("drop session binding for select * from t where i>99") c.Assert(err, IsNil) bindData = handle.GetBindRecord("select * from t where i > ?", "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where i > ?") c.Check(len(bindData.Bindings), Equals, 0) metrics.BindTotalGauge.WithLabelValues(metrics.ScopeSession, bindinfo.Using).Write(pb) c.Assert(pb.GetGauge().GetValue(), Equals, float64(0)) metrics.BindMemoryUsage.WithLabelValues(metrics.ScopeSession, bindinfo.Using).Write(pb) c.Assert(pb.GetGauge().GetValue(), Equals, float64(0)) } func (s *testSuite) TestGlobalAndSessionBindingBothExist(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t1") tk.MustExec("drop table if exists t2") tk.MustExec("create table t1(id int)") tk.MustExec("create table t2(id int)") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin"), IsTrue) c.Assert(tk.HasPlan("SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id", "MergeJoin"), IsTrue) tk.MustExec("create global binding for SELECT * from t1,t2 where t1.id = t2.id using SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id") // Test bindingUsage, which indicates how many times the binding is used. metrics.BindUsageCounter.Reset() c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "MergeJoin"), IsTrue) pb := &dto.Metric{} metrics.BindUsageCounter.WithLabelValues(metrics.ScopeGlobal).Write(pb) c.Assert(pb.GetCounter().GetValue(), Equals, float64(1)) // Test 'tidb_use_plan_baselines' tk.MustExec("set @@tidb_use_plan_baselines = 0") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin"), IsTrue) tk.MustExec("set @@tidb_use_plan_baselines = 1") // Test 'drop global binding' c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "MergeJoin"), IsTrue) tk.MustExec("drop global binding for SELECT * from t1,t2 where t1.id = t2.id") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin"), IsTrue) // Test the case when global and session binding both exist // PART1 : session binding should totally cover global binding // use merge join as session binding here since the optimizer will choose hash join for this stmt in default tk.MustExec("create global binding for SELECT * from t1,t2 where t1.id = t2.id using SELECT /*+ TIDB_HJ(t1, t2) */ * from t1,t2 where t1.id = t2.id") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin"), IsTrue) tk.MustExec("create binding for SELECT * from t1,t2 where t1.id = t2.id using SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "MergeJoin"), IsTrue) tk.MustExec("drop global binding for SELECT * from t1,t2 where t1.id = t2.id") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "MergeJoin"), IsTrue) // PART2 : the dropped session binding should continue to block the effect of global binding tk.MustExec("create global binding for SELECT * from t1,t2 where t1.id = t2.id using SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id") tk.MustExec("drop binding for SELECT * from t1,t2 where t1.id = t2.id") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin"), IsTrue) tk.MustExec("drop global binding for SELECT * from t1,t2 where t1.id = t2.id") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin"), IsTrue) } func (s *testSuite) TestExplain(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t1") tk.MustExec("drop table if exists t2") tk.MustExec("create table t1(id int)") tk.MustExec("create table t2(id int)") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin"), IsTrue) c.Assert(tk.HasPlan("SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id", "MergeJoin"), IsTrue) tk.MustExec("create global binding for SELECT * from t1,t2 where t1.id = t2.id using SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id") c.Assert(tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "MergeJoin"), IsTrue) tk.MustExec("drop global binding for SELECT * from t1,t2 where t1.id = t2.id") } // TestBindingSymbolList tests sql with "?, ?, ?, ?", fixes #13871 func (s *testSuite) TestBindingSymbolList(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, INDEX ia (a), INDEX ib (b));") tk.MustExec("insert into t value(1, 1);") // before binding tk.MustQuery("select a, b from t where a = 3 limit 1, 100") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:ia") c.Assert(tk.MustUseIndex("select a, b from t where a = 3 limit 1, 100", "ia(a)"), IsTrue) tk.MustExec(`create global binding for select a, b from t where a = 1 limit 0, 1 using select a, b from t use index (ib) where a = 1 limit 0, 1`) // after binding tk.MustQuery("select a, b from t where a = 3 limit 1, 100") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:ib") c.Assert(tk.MustUseIndex("select a, b from t where a = 3 limit 1, 100", "ib(b)"), IsTrue) // Normalize sql, hash := parser.NormalizeDigest("select a, b from t where a = 1 limit 0, 1") bindData := s.domain.BindHandle().GetBindRecord(hash, sql, "test") c.Assert(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select a , b from t where a = ? limit ...") bind := bindData.Bindings[0] c.Check(bind.BindSQL, Equals, "select a, b from t use index (ib) where a = 1 limit 0, 1") c.Check(bindData.Db, Equals, "test") c.Check(bind.Status, Equals, "using") c.Check(bind.Charset, NotNil) c.Check(bind.Collation, NotNil) c.Check(bind.CreateTime, NotNil) c.Check(bind.UpdateTime, NotNil) } func (s *testSuite) TestDMLSQLBind(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t1(a int, b int, c int, key idx_b(b), key idx_c(c))") tk.MustExec("create table t2(a int, b int, c int, key idx_b(b), key idx_c(c))") tk.MustExec("delete from t1 where b = 1 and c > 1") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t1:idx_b") c.Assert(tk.MustUseIndex("delete from t1 where b = 1 and c > 1", "idx_b(b)"), IsTrue) tk.MustExec("create global binding for delete from t1 where b = 1 and c > 1 using delete /*+ use_index(t1,idx_c) */ from t1 where b = 1 and c > 1") tk.MustExec("delete from t1 where b = 1 and c > 1") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t1:idx_c") c.Assert(tk.MustUseIndex("delete from t1 where b = 1 and c > 1", "idx_c(c)"), IsTrue) c.Assert(tk.HasPlan("delete t1, t2 from t1 inner join t2 on t1.b = t2.b", "HashJoin"), IsTrue) tk.MustExec("create global binding for delete t1, t2 from t1 inner join t2 on t1.b = t2.b using delete /*+ inl_join(t1) */ t1, t2 from t1 inner join t2 on t1.b = t2.b") c.Assert(tk.HasPlan("delete t1, t2 from t1 inner join t2 on t1.b = t2.b", "IndexJoin"), IsTrue) tk.MustExec("update t1 set a = 1 where b = 1 and c > 1") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t1:idx_b") c.Assert(tk.MustUseIndex("update t1 set a = 1 where b = 1 and c > 1", "idx_b(b)"), IsTrue) tk.MustExec("create global binding for update t1 set a = 1 where b = 1 and c > 1 using update /*+ use_index(t1,idx_c) */ t1 set a = 1 where b = 1 and c > 1") tk.MustExec("delete from t1 where b = 1 and c > 1") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t1:idx_c") c.Assert(tk.MustUseIndex("update t1 set a = 1 where b = 1 and c > 1", "idx_c(c)"), IsTrue) c.Assert(tk.HasPlan("update t1, t2 set t1.a = 1 where t1.b = t2.b", "HashJoin"), IsTrue) tk.MustExec("create global binding for update t1, t2 set t1.a = 1 where t1.b = t2.b using update /*+ inl_join(t1) */ t1, t2 set t1.a = 1 where t1.b = t2.b") c.Assert(tk.HasPlan("update t1, t2 set t1.a = 1 where t1.b = t2.b", "IndexJoin"), IsTrue) tk.MustExec("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t2:idx_b") c.Assert(tk.MustUseIndex("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_b(b)"), IsTrue) tk.MustExec("create global binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1 using insert /*+ use_index(t2,idx_c) */ into t1 select * from t2 where t2.b = 1 and t2.c > 1") tk.MustExec("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t2:idx_b") c.Assert(tk.MustUseIndex("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_b(b)"), IsTrue) tk.MustExec("drop global binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1") tk.MustExec("create global binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1 using insert into t1 select /*+ use_index(t2,idx_c) */ * from t2 where t2.b = 1 and t2.c > 1") tk.MustExec("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t2:idx_c") c.Assert(tk.MustUseIndex("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_c(c)"), IsTrue) tk.MustExec("replace into t1 select * from t2 where t2.b = 2 and t2.c > 2") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t2:idx_b") c.Assert(tk.MustUseIndex("replace into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_b(b)"), IsTrue) tk.MustExec("create global binding for replace into t1 select * from t2 where t2.b = 1 and t2.c > 1 using replace into t1 select /*+ use_index(t2,idx_c) */ * from t2 where t2.b = 1 and t2.c > 1") tk.MustExec("replace into t1 select * from t2 where t2.b = 2 and t2.c > 2") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t2:idx_c") c.Assert(tk.MustUseIndex("replace into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_c(c)"), IsTrue) } func (s *testSuite) TestErrorBind(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustGetErrMsg("create global binding for select * from t using select * from t", "[schema:1146]Table 'test.t' doesn't exist") tk.MustExec("drop table if exists t") tk.MustExec("drop table if exists t1") tk.MustExec("create table t(i int, s varchar(20))") tk.MustExec("create table t1(i int, s varchar(20))") tk.MustExec("create index index_t on t(i,s)") _, err := tk.Exec("create global binding for select * from t where i>100 using select * from t use index(index_t) where i>100") c.Assert(err, IsNil, Commentf("err %v", err)) sql, hash := parser.NormalizeDigest("select * from t where i > ?") bindData := s.domain.BindHandle().GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where i > ?") bind := bindData.Bindings[0] c.Check(bind.BindSQL, Equals, "select * from t use index(index_t) where i>100") c.Check(bindData.Db, Equals, "test") c.Check(bind.Status, Equals, "using") c.Check(bind.Charset, NotNil) c.Check(bind.Collation, NotNil) c.Check(bind.CreateTime, NotNil) c.Check(bind.UpdateTime, NotNil) tk.MustExec("drop index index_t on t") _, err = tk.Exec("select * from t where i > 10") c.Check(err, IsNil) s.domain.BindHandle().DropInvalidBindRecord() rs, err := tk.Exec("show global bindings") c.Assert(err, IsNil) chk := rs.NewChunk() err = rs.Next(context.TODO(), chk) c.Check(err, IsNil) c.Check(chk.NumRows(), Equals, 0) } func (s *testSuite) TestPreparedStmt(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx(a))") tk.MustExec(`prepare stmt1 from 'select * from t'`) tk.MustExec("execute stmt1") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 0) tk.MustExec("create binding for select * from t using select * from t use index(idx)") tk.MustExec("execute stmt1") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 1) c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx") tk.MustExec("drop binding for select * from t") tk.MustExec("execute stmt1") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 0) tk.MustExec("drop table t") tk.MustExec("create table t(a int, b int, c int, index idx_b(b), index idx_c(c))") tk.MustExec("set @p = 1") tk.MustExec("prepare stmt from 'delete from t where b = ? and c > ?'") tk.MustExec("execute stmt using @p,@p") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 1) c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_b") tk.MustExec("create binding for delete from t where b = 2 and c > 2 using delete /*+ use_index(t,idx_c) */ from t where b = 2 and c > 2") tk.MustExec("execute stmt using @p,@p") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 1) c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_c") tk.MustExec("prepare stmt from 'update t set a = 1 where b = ? and c > ?'") tk.MustExec("execute stmt using @p,@p") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 1) c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_b") tk.MustExec("create binding for update t set a = 2 where b = 2 and c > 2 using update /*+ use_index(t,idx_c) */ t set a = 2 where b = 2 and c > 2") tk.MustExec("execute stmt using @p,@p") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 1) c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_c") tk.MustExec("drop table if exists t1") tk.MustExec("create table t1 like t") tk.MustExec("prepare stmt from 'insert into t1 select * from t where t.b = ? and t.c > ?'") tk.MustExec("execute stmt using @p,@p") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 1) c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_b") tk.MustExec("create binding for insert into t1 select * from t where t.b = 2 and t.c > 2 using insert into t1 select /*+ use_index(t,idx_c) */ * from t where t.b = 2 and t.c > 2") tk.MustExec("execute stmt using @p,@p") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 1) c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_c") tk.MustExec("prepare stmt from 'replace into t1 select * from t where t.b = ? and t.c > ?'") tk.MustExec("execute stmt using @p,@p") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 1) c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_b") tk.MustExec("create binding for replace into t1 select * from t where t.b = 2 and t.c > 2 using replace into t1 select /*+ use_index(t,idx_c) */ * from t where t.b = 2 and t.c > 2") tk.MustExec("execute stmt using @p,@p") c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 1) c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_c") } func (s *testSuite) TestDMLCapturePlanBaseline(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) stmtsummary.StmtSummaryByDigestMap.Clear() tk.MustExec(" set @@tidb_capture_plan_baselines = on") defer func() { tk.MustExec(" set @@tidb_capture_plan_baselines = off") }() tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, c int, key idx_b(b), key idx_c(c))") tk.MustExec("create table t1 like t") s.domain.BindHandle().CaptureBaselines() tk.MustQuery("show global bindings").Check(testkit.Rows()) tk.MustExec("delete from t where b = 1 and c > 1") tk.MustExec("delete from t where b = 1 and c > 1") tk.MustExec("update t set a = 1 where b = 1 and c > 1") tk.MustExec("update t set a = 1 where b = 1 and c > 1") tk.MustExec("insert into t1 select * from t where t.b = 1 and t.c > 1") tk.MustExec("insert into t1 select * from t where t.b = 1 and t.c > 1") tk.MustExec("replace into t1 select * from t where t.b = 1 and t.c > 1") tk.MustExec("replace into t1 select * from t where t.b = 1 and t.c > 1") tk.MustExec("insert into t1 values(1,1,1)") tk.MustExec("insert into t1 values(1,1,1)") tk.MustExec("replace into t1 values(1,1,1)") tk.MustExec("replace into t1 values(1,1,1)") tk.MustExec("admin capture bindings") rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 0) c.Assert(tk.Se.Auth(&auth.UserIdentity{Username: "root", Hostname: "%"}, nil, nil), IsTrue) tk.MustExec("delete from t where b = 1 and c > 1") tk.MustExec("delete from t where b = 1 and c > 1") tk.MustExec("update t set a = 1 where b = 1 and c > 1") tk.MustExec("update t set a = 1 where b = 1 and c > 1") tk.MustExec("insert into t1 select * from t where t.b = 1 and t.c > 1") tk.MustExec("insert into t1 select * from t where t.b = 1 and t.c > 1") tk.MustExec("replace into t1 select * from t where t.b = 1 and t.c > 1") tk.MustExec("replace into t1 select * from t where t.b = 1 and t.c > 1") tk.MustExec("insert into t1 values(1,1,1)") tk.MustExec("insert into t1 values(1,1,1)") tk.MustExec("replace into t1 values(1,1,1)") tk.MustExec("replace into t1 values(1,1,1)") tk.MustExec("admin capture bindings") rows = tk.MustQuery("show global bindings").Sort().Rows() c.Assert(len(rows), Equals, 4) c.Assert(rows[0][0], Equals, "delete from t where b = ? and c > ?") c.Assert(rows[0][1], Equals, "DELETE /*+ use_index(@`del_1` `test`.`t` `idx_b`)*/ FROM `t` WHERE `b`=1 AND `c`>1") c.Assert(rows[1][0], Equals, "insert into t1 select * from t where t . b = ? and t . c > ?") c.Assert(rows[1][1], Equals, "INSERT INTO `t1` SELECT /*+ use_index(@`sel_1` `test`.`t` `idx_b`)*/ * FROM `t` WHERE `t`.`b`=1 AND `t`.`c`>1") c.Assert(rows[2][0], Equals, "replace into t1 select * from t where t . b = ? and t . c > ?") c.Assert(rows[2][1], Equals, "REPLACE INTO `t1` SELECT /*+ use_index(@`sel_1` `test`.`t` `idx_b`)*/ * FROM `t` WHERE `t`.`b`=1 AND `t`.`c`>1") c.Assert(rows[3][0], Equals, "update t set a = ? where b = ? and c > ?") c.Assert(rows[3][1], Equals, "UPDATE /*+ use_index(@`upd_1` `test`.`t` `idx_b`)*/ `t` SET `a`=1 WHERE `b`=1 AND `c`>1") } func (s *testSuite) TestCapturePlanBaseline(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) stmtsummary.StmtSummaryByDigestMap.Clear() tk.MustExec(" set @@tidb_capture_plan_baselines = on") defer func() { tk.MustExec(" set @@tidb_capture_plan_baselines = off") }() tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int)") s.domain.BindHandle().CaptureBaselines() tk.MustQuery("show global bindings").Check(testkit.Rows()) tk.MustExec("select count(*) from t where a > 10") tk.MustExec("select count(*) from t where a > 10") tk.MustExec("admin capture bindings") rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 0) c.Assert(tk.Se.Auth(&auth.UserIdentity{Username: "root", Hostname: "%"}, nil, nil), IsTrue) tk.MustExec("select * from t where a > 10") tk.MustExec("select * from t where a > 10") tk.MustExec("admin capture bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) c.Assert(rows[0][0], Equals, "select * from t where a > ?") c.Assert(rows[0][1], Equals, "SELECT /*+ use_index(@`sel_1` `test`.`t` )*/ * FROM `t` WHERE `a`>10") } func (s *testSuite) TestCaptureBaselinesDefaultDB(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) stmtsummary.StmtSummaryByDigestMap.Clear() tk.MustExec(" set @@tidb_capture_plan_baselines = on") defer func() { tk.MustExec(" set @@tidb_capture_plan_baselines = off") }() tk.MustExec("use test") tk.MustExec("drop database if exists spm") tk.MustExec("create database spm") tk.MustExec("create table spm.t(a int, index idx_a(a))") c.Assert(tk.Se.Auth(&auth.UserIdentity{Username: "root", Hostname: "%"}, nil, nil), IsTrue) tk.MustExec("select * from spm.t ignore index(idx_a) where a > 10") tk.MustExec("select * from spm.t ignore index(idx_a) where a > 10") tk.MustExec("admin capture bindings") rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) // Default DB should be "" when all columns have explicit database name. c.Assert(rows[0][2], Equals, "") c.Assert(rows[0][3], Equals, "using") tk.MustExec("use spm") tk.MustExec("select * from spm.t where a > 10") // Should use TableScan because of the "ignore index" binding. c.Assert(len(tk.Se.GetSessionVars().StmtCtx.IndexNames), Equals, 0) } func (s *testSuite) TestDropSingleBindings(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, c int, index idx_a(a), index idx_b(b))") // Test drop session bindings. tk.MustExec("create binding for select * from t using select * from t use index(idx_a)") tk.MustExec("create binding for select * from t using select * from t use index(idx_b)") rows := tk.MustQuery("show bindings").Rows() // The size of bindings is equal to one. Because for one normalized sql, // the `create binding` clears all the origin bindings. c.Assert(len(rows), Equals, 1) c.Assert(rows[0][1], Equals, "select * from t use index(idx_b)") tk.MustExec("drop binding for select * from t using select * from t use index(idx_a)") rows = tk.MustQuery("show bindings").Rows() c.Assert(len(rows), Equals, 1) c.Assert(rows[0][1], Equals, "select * from t use index(idx_b)") tk.MustExec("drop table t") tk.MustExec("drop binding for select * from t using select * from t use index(idx_b)") rows = tk.MustQuery("show bindings").Rows() c.Assert(len(rows), Equals, 0) tk.MustExec("create table t(a int, b int, c int, index idx_a(a), index idx_b(b))") // Test drop global bindings. tk.MustExec("create global binding for select * from t using select * from t use index(idx_a)") tk.MustExec("create global binding for select * from t using select * from t use index(idx_b)") rows = tk.MustQuery("show global bindings").Rows() // The size of bindings is equal to one. Because for one normalized sql, // the `create binding` clears all the origin bindings. c.Assert(len(rows), Equals, 1) c.Assert(rows[0][1], Equals, "select * from t use index(idx_b)") tk.MustExec("drop global binding for select * from t using select * from t use index(idx_a)") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) c.Assert(rows[0][1], Equals, "select * from t use index(idx_b)") tk.MustExec("drop table t") tk.MustExec("drop global binding for select * from t using select * from t use index(idx_b)") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 0) } func (s *testSuite) TestDMLEvolveBaselines(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, c int, index idx_b(b), index idx_c(c))") tk.MustExec("insert into t values (1,1,1), (2,2,2), (3,3,3), (4,4,4), (5,5,5)") tk.MustExec("analyze table t") tk.MustExec("set @@tidb_evolve_plan_baselines=1") tk.MustExec("create global binding for delete from t where b = 1 and c > 1 using delete /*+ use_index(t,idx_c) */ from t where b = 1 and c > 1") rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) tk.MustExec("delete /*+ use_index(t,idx_b) */ from t where b = 2 and c > 1") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_c") tk.MustExec("admin flush bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) tk.MustExec("admin evolve bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) tk.MustExec("create global binding for update t set a = 1 where b = 1 and c > 1 using update /*+ use_index(t,idx_c) */ t set a = 1 where b = 1 and c > 1") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 2) tk.MustExec("update /*+ use_index(t,idx_b) */ t set a = 2 where b = 2 and c > 1") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_c") tk.MustExec("admin flush bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 2) tk.MustExec("admin evolve bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 2) tk.MustExec("create table t1 like t") tk.MustExec("create global binding for insert into t1 select * from t where t.b = 1 and t.c > 1 using insert into t1 select /*+ use_index(t,idx_c) */ * from t where t.b = 1 and t.c > 1") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 3) tk.MustExec("insert into t1 select /*+ use_index(t,idx_b) */ * from t where t.b = 2 and t.c > 2") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_c") tk.MustExec("admin flush bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 3) tk.MustExec("admin evolve bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 3) tk.MustExec("create global binding for replace into t1 select * from t where t.b = 1 and t.c > 1 using replace into t1 select /*+ use_index(t,idx_c) */ * from t where t.b = 1 and t.c > 1") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 4) tk.MustExec("replace into t1 select /*+ use_index(t,idx_b) */ * from t where t.b = 2 and t.c > 2") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_c") tk.MustExec("admin flush bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 4) tk.MustExec("admin evolve bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 4) } func (s *testSuite) TestAddEvolveTasks(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, c int, index idx_a(a), index idx_b(b), index idx_c(c))") tk.MustExec("insert into t values (1,1,1), (2,2,2), (3,3,3), (4,4,4), (5,5,5)") tk.MustExec("analyze table t") tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 and c = 0 using select * from t use index(idx_a) where a >= 1 and b >= 1 and c = 0") tk.MustExec("set @@tidb_evolve_plan_baselines=1") // It cannot choose table path although it has lowest cost. tk.MustQuery("select * from t where a >= 4 and b >= 1 and c = 0") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_a") tk.MustExec("admin flush bindings") rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 2) c.Assert(rows[1][1], Equals, "SELECT /*+ use_index(@`sel_1` `test`.`t` )*/ * FROM `test`.`t` WHERE `a`>=4 AND `b`>=1 AND `c`=0") c.Assert(rows[1][3], Equals, "pending verify") tk.MustExec("admin evolve bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 2) c.Assert(rows[1][1], Equals, "SELECT /*+ use_index(@`sel_1` `test`.`t` )*/ * FROM `test`.`t` WHERE `a`>=4 AND `b`>=1 AND `c`=0") status := rows[1][3].(string) c.Assert(status == "using" || status == "rejected", IsTrue) } func (s *testSuite) TestRuntimeHintsInEvolveTasks(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("set @@tidb_evolve_plan_baselines=1") tk.MustExec("create table t(a int, b int, c int, index idx_a(a), index idx_b(b), index idx_c(c))") // these runtime hints which don't be contained by the original binding should be ignored tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 and c = 0 using select * from t use index(idx_a) where a >= 1 and b >= 1 and c = 0") tk.MustQuery("select /*+ MAX_EXECUTION_TIME(5000) */* from t where a >= 4 and b >= 1 and c = 0") tk.MustExec("admin flush bindings") rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 2) c.Assert(rows[1][1], Equals, "SELECT /*+ use_index(@`sel_1` `test`.`t` `idx_c`)*/ * FROM `test`.`t` WHERE `a`>=4 AND `b`>=1 AND `c`=0") // MAX_EXECUTION_TIME is ignored s.cleanBindingEnv(tk) tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 and c = 0 using select /*+ MAX_EXECUTION_TIME(5000) */* from t use index(idx_a) where a >= 1 and b >= 1 and c = 0") tk.MustQuery("select /*+ MAX_EXECUTION_TIME(5000) */* from t where a >= 4 and b >= 1 and c = 0") tk.MustExec("admin flush bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 2) c.Assert(rows[1][1], Equals, "SELECT /*+ use_index(@`sel_1` `test`.`t` `idx_c`), max_execution_time(5000)*/ * FROM `test`.`t` WHERE `a`>=4 AND `b`>=1 AND `c`=0") } func (s *testSuite) TestBindingCache(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx(a))") tk.MustExec("create global binding for select * from t using select * from t use index(idx);") tk.MustExec("create database tmp") tk.MustExec("use tmp") tk.MustExec("create table t(a int, b int, index idx(a))") tk.MustExec("create global binding for select * from t using select * from t use index(idx);") c.Assert(s.domain.BindHandle().Update(false), IsNil) c.Assert(s.domain.BindHandle().Update(false), IsNil) res := tk.MustQuery("show global bindings") c.Assert(len(res.Rows()), Equals, 2) tk.MustExec("drop global binding for select * from t;") c.Assert(s.domain.BindHandle().Update(false), IsNil) c.Assert(len(s.domain.BindHandle().GetAllBindRecord()), Equals, 1) } func (s *testSuite) TestDefaultSessionVars(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustQuery(`show variables like "%baselines%"`).Sort().Check(testkit.Rows( "tidb_capture_plan_baselines off", "tidb_evolve_plan_baselines off", "tidb_use_plan_baselines on")) tk.MustQuery(`show global variables like "%baselines%"`).Sort().Check(testkit.Rows( "tidb_capture_plan_baselines off", "tidb_evolve_plan_baselines off", "tidb_use_plan_baselines on")) } func (s *testSuite) TestCaptureBaselinesScope(c *C) { tk1 := testkit.NewTestKit(c, s.store) tk2 := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk1) tk1.MustQuery(`show session variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows( "tidb_capture_plan_baselines off", )) tk1.MustQuery(`show global variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows( "tidb_capture_plan_baselines off", )) tk1.MustQuery(`select @@session.tidb_capture_plan_baselines`).Check(testkit.Rows( "off", )) tk1.MustQuery(`select @@global.tidb_capture_plan_baselines`).Check(testkit.Rows( "off", )) tk1.MustExec("set @@session.tidb_capture_plan_baselines = on") defer func() { tk1.MustExec(" set @@session.tidb_capture_plan_baselines = off") }() tk1.MustQuery(`show session variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows( "tidb_capture_plan_baselines on", )) tk1.MustQuery(`show global variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows( "tidb_capture_plan_baselines off", )) tk1.MustQuery(`select @@session.tidb_capture_plan_baselines`).Check(testkit.Rows( "on", )) tk1.MustQuery(`select @@global.tidb_capture_plan_baselines`).Check(testkit.Rows( "off", )) tk2.MustQuery(`show session variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows( "tidb_capture_plan_baselines on", )) tk2.MustQuery(`show global variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows( "tidb_capture_plan_baselines off", )) tk2.MustQuery(`select @@session.tidb_capture_plan_baselines`).Check(testkit.Rows( "on", )) tk2.MustQuery(`select @@global.tidb_capture_plan_baselines`).Check(testkit.Rows( "off", )) } func (s *testSuite) TestDuplicateBindings(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx(a))") tk.MustExec("create global binding for select * from t using select * from t use index(idx);") rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) createTime := rows[0][4] time.Sleep(1000000) tk.MustExec("create global binding for select * from t using select * from t use index(idx);") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) c.Assert(createTime == rows[0][4], Equals, false) tk.MustExec("create session binding for select * from t using select * from t use index(idx);") rows = tk.MustQuery("show session bindings").Rows() c.Assert(len(rows), Equals, 1) createTime = rows[0][4] time.Sleep(1000000) tk.MustExec("create session binding for select * from t using select * from t use index(idx);") rows = tk.MustQuery("show session bindings").Rows() c.Assert(len(rows), Equals, 1) c.Assert(createTime == rows[0][4], Equals, false) } func (s *testSuite) TestStmtHints(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx(a))") tk.MustExec("create global binding for select * from t using select /*+ MAX_EXECUTION_TIME(100), MEMORY_QUOTA(1 GB) */ * from t use index(idx)") tk.MustQuery("select * from t") c.Assert(tk.Se.GetSessionVars().StmtCtx.MemQuotaQuery, Equals, int64(1073741824)) c.Assert(tk.Se.GetSessionVars().StmtCtx.MaxExecutionTime, Equals, uint64(100)) tk.MustQuery("select a, b from t") c.Assert(tk.Se.GetSessionVars().StmtCtx.MemQuotaQuery, Equals, int64(0)) c.Assert(tk.Se.GetSessionVars().StmtCtx.MaxExecutionTime, Equals, uint64(0)) } func (s *testSuite) TestReloadBindings(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx(a))") tk.MustExec("create global binding for select * from t using select * from t use index(idx)") rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) rows = tk.MustQuery("select * from mysql.bind_info").Rows() c.Assert(len(rows), Equals, 1) tk.MustExec("truncate table mysql.bind_info") c.Assert(s.domain.BindHandle().Update(false), IsNil) rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) c.Assert(s.domain.BindHandle().Update(true), IsNil) rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) tk.MustExec("admin reload bindings") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 0) } func (s *testSuite) TestDefaultDB(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("create table t(a int, b int, index idx(a))") tk.MustExec("create global binding for select * from test.t using select * from test.t use index(idx)") tk.MustExec("use mysql") tk.MustQuery("select * from test.t") // Even in another database, we could still use the bindings. c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx") tk.MustExec("drop global binding for select * from test.t") tk.MustQuery("show global bindings").Check(testkit.Rows()) tk.MustExec("use test") tk.MustExec("create session binding for select * from test.t using select * from test.t use index(idx)") tk.MustExec("use mysql") tk.MustQuery("select * from test.t") // Even in another database, we could still use the bindings. c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx") tk.MustExec("drop session binding for select * from test.t") tk.MustQuery("show session bindings").Check(testkit.Rows()) } func (s *testSuite) TestEvolveInvalidBindings(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx_a(a))") tk.MustExec("create global binding for select * from t where a > 10 using select /*+ USE_INDEX(t) */ * from t where a > 10") // Manufacture a rejected binding by hacking mysql.bind_info. tk.MustExec("insert into mysql.bind_info values('select * from t where a > ?', 'select /*+ USE_INDEX(t,idx_a) */ * from t where a > 10', 'test', 'rejected', '2000-01-01 09:00:00', '2000-01-01 09:00:00', '', '','" + bindinfo.Manual + "')") tk.MustQuery("select bind_sql, status from mysql.bind_info").Sort().Check(testkit.Rows( "select /*+ USE_INDEX(t) */ * from t where a > 10 using", "select /*+ USE_INDEX(t,idx_a) */ * from t where a > 10 rejected", )) // Reload cache from mysql.bind_info. s.domain.BindHandle().Clear() c.Assert(s.domain.BindHandle().Update(true), IsNil) tk.MustExec("alter table t drop index idx_a") tk.MustExec("admin evolve bindings") c.Assert(s.domain.BindHandle().Update(false), IsNil) rows := tk.MustQuery("show global bindings").Sort().Rows() c.Assert(len(rows), Equals, 2) // Make sure this "using" binding is not overrided. c.Assert(rows[0][1], Equals, "select /*+ USE_INDEX(t) */ * from t where a > 10") status := rows[0][3].(string) c.Assert(status == "using", IsTrue) c.Assert(rows[1][1], Equals, "select /*+ USE_INDEX(t,idx_a) */ * from t where a > 10") status = rows[1][3].(string) c.Assert(status == "using" || status == "rejected", IsTrue) } func (s *testSuite) TestOutdatedInfoSchema(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx(a))") tk.MustExec("create global binding for select * from t using select * from t use index(idx)") c.Assert(s.domain.BindHandle().Update(false), IsNil) tk.MustExec("truncate table mysql.bind_info") tk.MustExec("create global binding for select * from t using select * from t use index(idx)") } func (s *testSuite) TestPrivileges(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx(a))") tk.MustExec("create global binding for select * from t using select * from t use index(idx)") c.Assert(tk.Se.Auth(&auth.UserIdentity{Username: "root", Hostname: "%"}, nil, nil), IsTrue) rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) tk.MustExec("create user test@'%'") c.Assert(tk.Se.Auth(&auth.UserIdentity{Username: "test", Hostname: "%"}, nil, nil), IsTrue) rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 0) } func (s *testSuite) TestHintsSetEvolveTask(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, index idx_a(a))") tk.MustExec("create global binding for select * from t where a > 10 using select * from t ignore index(idx_a) where a > 10") tk.MustExec("set @@tidb_evolve_plan_baselines=1") tk.MustQuery("select * from t use index(idx_a) where a > 0") bindHandle := s.domain.BindHandle() bindHandle.SaveEvolveTasksToStore() // Verify the added Binding for evolution contains valid ID and Hint, otherwise, panic may happen. sql, hash := parser.NormalizeDigest("select * from t where a > ?") bindData := bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a > ?") c.Assert(len(bindData.Bindings), Equals, 2) bind := bindData.Bindings[1] c.Assert(bind.Status, Equals, bindinfo.PendingVerify) c.Assert(bind.ID, Not(Equals), "") c.Assert(bind.Hint, NotNil) } func (s *testSuite) TestHintsSetID(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, index idx_a(a))") tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(test.t, idx_a) */ * from t where a > 10") bindHandle := s.domain.BindHandle() // Verify the added Binding contains ID with restored query block. sql, hash := parser.NormalizeDigest("select * from t where a > ?") bindData := bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a > ?") c.Assert(len(bindData.Bindings), Equals, 1) bind := bindData.Bindings[0] c.Assert(bind.ID, Equals, "use_index(@`sel_1` `test`.`t` `idx_a`)") s.cleanBindingEnv(tk) tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(t, idx_a) */ * from t where a > 10") bindData = bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a > ?") c.Assert(len(bindData.Bindings), Equals, 1) bind = bindData.Bindings[0] c.Assert(bind.ID, Equals, "use_index(@`sel_1` `test`.`t` `idx_a`)") s.cleanBindingEnv(tk) tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(@sel_1 t, idx_a) */ * from t where a > 10") bindData = bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a > ?") c.Assert(len(bindData.Bindings), Equals, 1) bind = bindData.Bindings[0] c.Assert(bind.ID, Equals, "use_index(@`sel_1` `test`.`t` `idx_a`)") s.cleanBindingEnv(tk) tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(@qb1 t, idx_a) qb_name(qb1) */ * from t where a > 10") bindData = bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a > ?") c.Assert(len(bindData.Bindings), Equals, 1) bind = bindData.Bindings[0] c.Assert(bind.ID, Equals, "use_index(@`sel_1` `test`.`t` `idx_a`)") s.cleanBindingEnv(tk) tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(T, IDX_A) */ * from t where a > 10") bindData = bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a > ?") c.Assert(len(bindData.Bindings), Equals, 1) bind = bindData.Bindings[0] c.Assert(bind.ID, Equals, "use_index(@`sel_1` `test`.`t` `idx_a`)") s.cleanBindingEnv(tk) err := tk.ExecToErr("create global binding for select * from t using select /*+ non_exist_hint() */ * from t") c.Assert(terror.ErrorEqual(err, parser.ErrWarnOptimizerHintParseError), IsTrue) tk.MustExec("create global binding for select * from t where a > 10 using select * from t where a > 10") bindData = bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a > ?") c.Assert(len(bindData.Bindings), Equals, 1) bind = bindData.Bindings[0] c.Assert(bind.ID, Equals, "") } func (s *testSuite) TestCapturePlanBaselineIgnoreTiFlash(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) stmtsummary.StmtSummaryByDigestMap.Clear() tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, key(a), key(b))") c.Assert(tk.Se.Auth(&auth.UserIdentity{Username: "root", Hostname: "%"}, nil, nil), IsTrue) tk.MustExec("select * from t") tk.MustExec("select * from t") // Create virtual tiflash replica info. dom := domain.GetDomain(tk.Se) is := dom.InfoSchema() db, exists := is.SchemaByName(model.NewCIStr("test")) c.Assert(exists, IsTrue) for _, tblInfo := range db.Tables { if tblInfo.Name.L == "t" { tblInfo.TiFlashReplica = &model.TiFlashReplicaInfo{ Count: 1, Available: true, } } } // Here the plan is the TiFlash plan. rows := tk.MustQuery("explain select * from t").Rows() c.Assert(fmt.Sprintf("%v", rows[len(rows)-1][2]), Equals, "cop[tiflash]") tk.MustQuery("show global bindings").Check(testkit.Rows()) tk.MustExec("admin capture bindings") // Don't have the TiFlash plan even we have TiFlash replica. rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) c.Assert(rows[0][0], Equals, "select * from t") c.Assert(rows[0][1], Equals, "SELECT /*+ use_index(@`sel_1` `test`.`t` )*/ * FROM `t`") } func (s *testSuite) TestNotEvolvePlanForReadStorageHint(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx_a(a), index idx_b(b))") tk.MustExec("insert into t values (1,1), (2,2), (3,3), (4,4), (5,5), (6,6), (7,7), (8,8), (9,9), (10,10)") tk.MustExec("analyze table t") // Create virtual tiflash replica info. dom := domain.GetDomain(tk.Se) is := dom.InfoSchema() db, exists := is.SchemaByName(model.NewCIStr("test")) c.Assert(exists, IsTrue) for _, tblInfo := range db.Tables { if tblInfo.Name.L == "t" { tblInfo.TiFlashReplica = &model.TiFlashReplicaInfo{ Count: 1, Available: true, } } } // Make sure the best plan of the SQL is use TiKV index. rows := tk.MustQuery("explain select * from t where a >= 11 and b >= 11").Rows() c.Assert(fmt.Sprintf("%v", rows[len(rows)-1][2]), Equals, "cop[tikv]") tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 using select /*+ read_from_storage(tiflash[t]) */ * from t where a >= 1 and b >= 1") tk.MustExec("set @@tidb_evolve_plan_baselines=1") // Even if index of TiKV has lower cost, it chooses TiFlash. rows = tk.MustQuery("explain select * from t where a >= 11 and b >= 11").Rows() c.Assert(fmt.Sprintf("%v", rows[len(rows)-1][2]), Equals, "cop[tiflash]") tk.MustExec("admin flush bindings") rows = tk.MustQuery("show global bindings").Rows() // None evolve task, because of the origin binding is a read_from_storage binding. c.Assert(len(rows), Equals, 1) c.Assert(rows[0][1], Equals, "select /*+ read_from_storage(tiflash[t]) */ * from t where a >= 1 and b >= 1") c.Assert(rows[0][3], Equals, "using") } func (s *testSuite) TestBindingWithIsolationRead(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, index idx_a(a), index idx_b(b))") tk.MustExec("insert into t values (1,1), (2,2), (3,3), (4,4), (5,5), (6,6), (7,7), (8,8), (9,9), (10,10)") tk.MustExec("analyze table t") // Create virtual tiflash replica info. dom := domain.GetDomain(tk.Se) is := dom.InfoSchema() db, exists := is.SchemaByName(model.NewCIStr("test")) c.Assert(exists, IsTrue) for _, tblInfo := range db.Tables { if tblInfo.Name.L == "t" { tblInfo.TiFlashReplica = &model.TiFlashReplicaInfo{ Count: 1, Available: true, } } } tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 using select * from t use index(idx_a) where a >= 1 and b >= 1") tk.MustExec("set @@tidb_use_plan_baselines = 1") rows := tk.MustQuery("explain select * from t where a >= 11 and b >= 11").Rows() c.Assert(rows[len(rows)-1][2], Equals, "cop[tikv]") // Even if we build a binding use index for SQL, but after we set the isolation read for TiFlash, it choose TiFlash instead of index of TiKV. tk.MustExec("set @@tidb_isolation_read_engines = \"tiflash\"") rows = tk.MustQuery("explain select * from t where a >= 11 and b >= 11").Rows() c.Assert(rows[len(rows)-1][2], Equals, "cop[tiflash]") } func (s *testSuite) TestReCreateBindAfterEvolvePlan(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, b int, c int, index idx_a(a), index idx_b(b), index idx_c(c))") tk.MustExec("insert into t values (1,1,1), (2,2,2), (3,3,3), (4,4,4), (5,5,5)") tk.MustExec("analyze table t") tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 using select * from t use index(idx_a) where a >= 1 and b >= 1") tk.MustExec("set @@tidb_evolve_plan_baselines=1") // It cannot choose table path although it has lowest cost. tk.MustQuery("select * from t where a >= 0 and b >= 0") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_a") tk.MustExec("admin flush bindings") rows := tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 2) c.Assert(rows[1][1], Equals, "SELECT /*+ use_index(@`sel_1` `test`.`t` )*/ * FROM `test`.`t` WHERE `a`>=0 AND `b`>=0") c.Assert(rows[1][3], Equals, "pending verify") tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 using select * from t use index(idx_b) where a >= 1 and b >= 1") rows = tk.MustQuery("show global bindings").Rows() c.Assert(len(rows), Equals, 1) tk.MustQuery("select * from t where a >= 4 and b >= 1") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_b") } func (s *testSuite) TestbindingSource(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, index idx_a(a))") // Test Source for SQL created sql tk.MustExec("create global binding for select * from t where a > 10 using select * from t ignore index(idx_a) where a > 10") bindHandle := s.domain.BindHandle() sql, hash := parser.NormalizeDigest("select * from t where a > ?") bindData := bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a > ?") c.Assert(len(bindData.Bindings), Equals, 1) bind := bindData.Bindings[0] c.Assert(bind.Source, Equals, bindinfo.Manual) // Test Source for evolved sql tk.MustExec("set @@tidb_evolve_plan_baselines=1") tk.MustQuery("select * from t where a > 10") bindHandle.SaveEvolveTasksToStore() sql, hash = parser.NormalizeDigest("select * from t where a > ?") bindData = bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a > ?") c.Assert(len(bindData.Bindings), Equals, 2) bind = bindData.Bindings[1] c.Assert(bind.Source, Equals, bindinfo.Evolve) tk.MustExec("set @@tidb_evolve_plan_baselines=0") // Test Source for captured sqls stmtsummary.StmtSummaryByDigestMap.Clear() tk.MustExec("set @@tidb_capture_plan_baselines = on") defer func() { tk.MustExec("set @@tidb_capture_plan_baselines = off") }() tk.MustExec("use test") c.Assert(tk.Se.Auth(&auth.UserIdentity{Username: "root", Hostname: "%"}, nil, nil), IsTrue) tk.MustExec("select * from t ignore index(idx_a) where a < 10") tk.MustExec("select * from t ignore index(idx_a) where a < 10") tk.MustExec("admin capture bindings") bindHandle.CaptureBaselines() sql, hash = parser.NormalizeDigest("select * from t where a < ?") bindData = bindHandle.GetBindRecord(hash, sql, "test") c.Check(bindData, NotNil) c.Check(bindData.OriginalSQL, Equals, "select * from t where a < ?") c.Assert(len(bindData.Bindings), Equals, 1) bind = bindData.Bindings[0] c.Assert(bind.Source, Equals, bindinfo.Capture) } func (s *testSuite) TestIssue19836(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("drop table if exists t") tk.MustExec("create table t(a int, key (a));") tk.MustExec("CREATE SESSION BINDING FOR select * from t where a = 1 limit 5, 5 USING select * from t ignore index (a) where a = 1 limit 5, 5;") tk.MustExec("PREPARE stmt FROM 'select * from t where a = 40 limit ?, ?';") tk.MustExec("set @a=1;") tk.MustExec("set @b=2;") tk.MustExec("EXECUTE stmt USING @a, @b;") tk.Se.SetSessionManager(&mockSessionManager{ PS: []*util.ProcessInfo{tk.Se.ShowProcess()}, }) explainResult := testkit.Rows( "Limit_8 2.00 0 root time:0s, loops:0 offset:1, count:2 N/A N/A", "└─TableReader_14 3.00 0 root time:0s, loops:0 data:Limit_13 N/A N/A", " └─Limit_13 3.00 0 cop[tikv] time:0ns, loops:0 offset:0, count:3 N/A N/A", " └─Selection_12 3.00 0 cop[tikv] time:0ns, loops:0 eq(test.t.a, 40) N/A N/A", " └─TableFullScan_11 3000.00 0 cop[tikv] table:t time:0ns, loops:0 keep order:false, stats:pseudo N/A N/A", ) tk.MustQuery("explain for connection " + strconv.FormatUint(tk.Se.ShowProcess().ID, 10)).Check(explainResult) } func (s *testSuite) TestDMLIndexHintBind(c *C) { tk := testkit.NewTestKit(c, s.store) s.cleanBindingEnv(tk) tk.MustExec("use test") tk.MustExec("create table t(a int, b int, c int, key idx_b(b), key idx_c(c))") tk.MustExec("delete from t where b = 1 and c > 1") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_b") c.Assert(tk.MustUseIndex("delete from t where b = 1 and c > 1", "idx_b(b)"), IsTrue) tk.MustExec("create global binding for delete from t where b = 1 and c > 1 using delete from t use index(idx_c) where b = 1 and c > 1") tk.MustExec("delete from t where b = 1 and c > 1") c.Assert(tk.Se.GetSessionVars().StmtCtx.IndexNames[0], Equals, "t:idx_c") c.Assert(tk.MustUseIndex("delete from t where b = 1 and c > 1", "idx_c(c)"), IsTrue) }