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260 lines
11 KiB
260 lines
11 KiB
// Copyright 2017 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package executor_test
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import (
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"fmt"
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"time"
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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/statistics"
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"github.com/pingcap/tidb/util/testkit"
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)
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type testShowStatsSuite struct {
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*baseTestSuite
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}
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func (s *testShowStatsSuite) TestShowStatsMeta(c *C) {
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tk := testkit.NewTestKit(c, s.store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t, t1")
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tk.MustExec("create table t (a int, b int)")
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tk.MustExec("create table t1 (a int, b int)")
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tk.MustExec("analyze table t, t1")
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result := tk.MustQuery("show stats_meta")
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c.Assert(len(result.Rows()), Equals, 2)
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c.Assert(result.Rows()[0][1], Equals, "t")
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c.Assert(result.Rows()[1][1], Equals, "t1")
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result = tk.MustQuery("show stats_meta where table_name = 't'")
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c.Assert(len(result.Rows()), Equals, 1)
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c.Assert(result.Rows()[0][1], Equals, "t")
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}
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func (s *testShowStatsSuite) TestShowStatsHistograms(c *C) {
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tk := testkit.NewTestKit(c, s.store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t (a int, b int)")
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tk.MustExec("analyze table t")
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result := tk.MustQuery("show stats_histograms")
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c.Assert(len(result.Rows()), Equals, 0)
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tk.MustExec("insert into t values(1,1)")
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tk.MustExec("analyze table t")
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result = tk.MustQuery("show stats_histograms").Sort()
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c.Assert(len(result.Rows()), Equals, 2)
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c.Assert(result.Rows()[0][3], Equals, "a")
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c.Assert(result.Rows()[1][3], Equals, "b")
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result = tk.MustQuery("show stats_histograms where column_name = 'a'")
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c.Assert(len(result.Rows()), Equals, 1)
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c.Assert(result.Rows()[0][3], Equals, "a")
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tk.MustExec("drop table t")
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tk.MustExec("create table t(a int, b int, c int, index idx_b(b), index idx_c_a(c, a))")
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tk.MustExec("insert into t values(1,null,1),(2,null,2),(3,3,3),(4,null,4),(null,null,null)")
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res := tk.MustQuery("show stats_histograms where table_name = 't'")
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c.Assert(len(res.Rows()), Equals, 0)
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tk.MustExec("analyze table t index idx_b")
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res = tk.MustQuery("show stats_histograms where table_name = 't' and column_name = 'idx_b'")
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c.Assert(len(res.Rows()), Equals, 1)
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}
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func (s *testShowStatsSuite) TestShowStatsBuckets(c *C) {
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tk := testkit.NewTestKit(c, s.store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t (a int, b int)")
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tk.MustExec("create index idx on t(a,b)")
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tk.MustExec("insert into t values (1,1)")
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tk.MustExec("analyze table t")
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result := tk.MustQuery("show stats_buckets").Sort()
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result.Check(testkit.Rows("test t a 0 0 1 1 1 1", "test t b 0 0 1 1 1 1", "test t idx 1 0 1 1 (1, 1) (1, 1)"))
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result = tk.MustQuery("show stats_buckets where column_name = 'idx'")
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result.Check(testkit.Rows("test t idx 1 0 1 1 (1, 1) (1, 1)"))
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tk.MustExec("drop table t")
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tk.MustExec("create table t (`a` datetime, `b` int, key `idx`(`a`, `b`))")
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tk.MustExec("insert into t values (\"2020-01-01\", 1)")
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tk.MustExec("analyze table t")
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result = tk.MustQuery("show stats_buckets").Sort()
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result.Check(testkit.Rows("test t a 0 0 1 1 2020-01-01 00:00:00 2020-01-01 00:00:00", "test t b 0 0 1 1 1 1", "test t idx 1 0 1 1 (2020-01-01 00:00:00, 1) (2020-01-01 00:00:00, 1)"))
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result = tk.MustQuery("show stats_buckets where column_name = 'idx'")
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result.Check(testkit.Rows("test t idx 1 0 1 1 (2020-01-01 00:00:00, 1) (2020-01-01 00:00:00, 1)"))
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tk.MustExec("drop table t")
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tk.MustExec("create table t (`a` date, `b` int, key `idx`(`a`, `b`))")
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tk.MustExec("insert into t values (\"2020-01-01\", 1)")
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tk.MustExec("analyze table t")
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result = tk.MustQuery("show stats_buckets").Sort()
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result.Check(testkit.Rows("test t a 0 0 1 1 2020-01-01 2020-01-01", "test t b 0 0 1 1 1 1", "test t idx 1 0 1 1 (2020-01-01, 1) (2020-01-01, 1)"))
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result = tk.MustQuery("show stats_buckets where column_name = 'idx'")
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result.Check(testkit.Rows("test t idx 1 0 1 1 (2020-01-01, 1) (2020-01-01, 1)"))
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tk.MustExec("drop table t")
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tk.MustExec("create table t (`a` timestamp, `b` int, key `idx`(`a`, `b`))")
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tk.MustExec("insert into t values (\"2020-01-01\", 1)")
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tk.MustExec("analyze table t")
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result = tk.MustQuery("show stats_buckets").Sort()
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result.Check(testkit.Rows("test t a 0 0 1 1 2020-01-01 00:00:00 2020-01-01 00:00:00", "test t b 0 0 1 1 1 1", "test t idx 1 0 1 1 (2020-01-01 00:00:00, 1) (2020-01-01 00:00:00, 1)"))
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result = tk.MustQuery("show stats_buckets where column_name = 'idx'")
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result.Check(testkit.Rows("test t idx 1 0 1 1 (2020-01-01 00:00:00, 1) (2020-01-01 00:00:00, 1)"))
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}
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func (s *testShowStatsSuite) TestShowStatsHasNullValue(c *C) {
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tk := testkit.NewTestKit(c, s.store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t (a int, index idx(a))")
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tk.MustExec("insert into t values(NULL)")
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tk.MustExec("analyze table t")
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// Null values are excluded from histogram for single-column index.
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tk.MustQuery("show stats_buckets").Check(testkit.Rows())
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tk.MustExec("insert into t values(1)")
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tk.MustExec("analyze table t")
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tk.MustQuery("show stats_buckets").Sort().Check(testkit.Rows(
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"test t a 0 0 1 1 1 1",
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"test t idx 1 0 1 1 1 1",
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))
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tk.MustExec("drop table t")
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tk.MustExec("create table t (a int, b int, index idx(a, b))")
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tk.MustExec("insert into t values(NULL, NULL)")
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tk.MustExec("analyze table t")
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tk.MustQuery("show stats_buckets").Check(testkit.Rows("test t idx 1 0 1 1 (NULL, NULL) (NULL, NULL)"))
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tk.MustExec("drop table t")
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tk.MustExec("create table t(a int, b int, c int, index idx_b(b), index idx_c_a(c, a))")
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tk.MustExec("insert into t values(1,null,1),(2,null,2),(3,3,3),(4,null,4),(null,null,null)")
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res := tk.MustQuery("show stats_histograms where table_name = 't'")
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c.Assert(len(res.Rows()), Equals, 0)
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tk.MustExec("analyze table t index idx_b")
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res = tk.MustQuery("show stats_histograms where table_name = 't' and column_name = 'idx_b'")
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c.Assert(len(res.Rows()), Equals, 1)
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c.Assert(res.Rows()[0][7], Equals, "4")
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res = tk.MustQuery("show stats_histograms where table_name = 't' and column_name = 'b'")
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c.Assert(len(res.Rows()), Equals, 0)
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tk.MustExec("analyze table t index idx_c_a")
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res = tk.MustQuery("show stats_histograms where table_name = 't' and column_name = 'idx_c_a'")
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c.Assert(len(res.Rows()), Equals, 1)
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c.Assert(res.Rows()[0][7], Equals, "0")
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res = tk.MustQuery("show stats_histograms where table_name = 't' and column_name = 'c'")
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c.Assert(len(res.Rows()), Equals, 0)
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res = tk.MustQuery("show stats_histograms where table_name = 't' and column_name = 'a'")
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c.Assert(len(res.Rows()), Equals, 0)
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tk.MustExec("truncate table t")
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tk.MustExec("insert into t values(1,null,1),(2,null,2),(3,3,3),(4,null,4),(null,null,null)")
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res = tk.MustQuery("show stats_histograms where table_name = 't'")
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c.Assert(len(res.Rows()), Equals, 0)
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tk.MustExec("analyze table t index")
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res = tk.MustQuery("show stats_histograms where table_name = 't'").Sort()
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c.Assert(len(res.Rows()), Equals, 2)
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c.Assert(res.Rows()[0][7], Equals, "4")
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c.Assert(res.Rows()[1][7], Equals, "0")
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tk.MustExec("truncate table t")
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tk.MustExec("insert into t values(1,null,1),(2,null,2),(3,3,3),(4,null,4),(null,null,null)")
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tk.MustExec("analyze table t")
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res = tk.MustQuery("show stats_histograms where table_name = 't'").Sort()
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c.Assert(len(res.Rows()), Equals, 5)
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c.Assert(res.Rows()[0][7], Equals, "1")
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c.Assert(res.Rows()[1][7], Equals, "4")
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c.Assert(res.Rows()[2][7], Equals, "1")
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c.Assert(res.Rows()[3][7], Equals, "4")
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c.Assert(res.Rows()[4][7], Equals, "0")
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}
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func (s *testShowStatsSuite) TestShowPartitionStats(c *C) {
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tk := testkit.NewTestKit(c, s.store)
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tk.MustExec("set @@session.tidb_enable_table_partition=1")
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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createTable := `CREATE TABLE t (a int, b int, primary key(a), index idx(b))
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PARTITION BY RANGE ( a ) (PARTITION p0 VALUES LESS THAN (6))`
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tk.MustExec(createTable)
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tk.MustExec(`insert into t values (1, 1)`)
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tk.MustExec("analyze table t")
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result := tk.MustQuery("show stats_meta")
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c.Assert(len(result.Rows()), Equals, 1)
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c.Assert(result.Rows()[0][0], Equals, "test")
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c.Assert(result.Rows()[0][1], Equals, "t")
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c.Assert(result.Rows()[0][2], Equals, "p0")
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result = tk.MustQuery("show stats_histograms").Sort()
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c.Assert(len(result.Rows()), Equals, 3)
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c.Assert(result.Rows()[0][2], Equals, "p0")
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c.Assert(result.Rows()[0][3], Equals, "a")
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c.Assert(result.Rows()[1][2], Equals, "p0")
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c.Assert(result.Rows()[1][3], Equals, "b")
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c.Assert(result.Rows()[2][2], Equals, "p0")
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c.Assert(result.Rows()[2][3], Equals, "idx")
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result = tk.MustQuery("show stats_buckets").Sort()
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result.Check(testkit.Rows("test t p0 a 0 0 1 1 1 1", "test t p0 b 0 0 1 1 1 1", "test t p0 idx 1 0 1 1 1 1"))
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result = tk.MustQuery("show stats_healthy")
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result.Check(testkit.Rows("test t p0 100"))
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}
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func (s *testShowStatsSuite) TestShowAnalyzeStatus(c *C) {
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tk := testkit.NewTestKit(c, s.store)
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statistics.ClearHistoryJobs()
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t (a int, b int, primary key(a), index idx(b))")
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tk.MustExec(`insert into t values (1, 1), (2, 2)`)
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tk.MustExec("analyze table t")
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result := tk.MustQuery("show analyze status").Sort()
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c.Assert(len(result.Rows()), Equals, 2)
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c.Assert(result.Rows()[0][0], Equals, "test")
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c.Assert(result.Rows()[0][1], Equals, "t")
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c.Assert(result.Rows()[0][2], Equals, "")
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c.Assert(result.Rows()[0][3], Equals, "analyze columns")
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c.Assert(result.Rows()[0][4], Equals, "2")
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c.Assert(result.Rows()[0][5], NotNil)
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c.Assert(result.Rows()[0][6], Equals, "finished")
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c.Assert(len(result.Rows()), Equals, 2)
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c.Assert(result.Rows()[1][0], Equals, "test")
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c.Assert(result.Rows()[1][1], Equals, "t")
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c.Assert(result.Rows()[1][2], Equals, "")
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c.Assert(result.Rows()[1][3], Equals, "analyze index idx")
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c.Assert(result.Rows()[1][4], Equals, "2")
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c.Assert(result.Rows()[1][5], NotNil)
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c.Assert(result.Rows()[1][6], Equals, "finished")
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}
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func (s *testShowStatsSuite) TestShowStatusSnapshot(c *C) {
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tk := testkit.NewTestKit(c, s.store)
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tk.MustExec("drop database if exists test;")
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tk.MustExec("create database test;")
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tk.MustExec("use test;")
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tk.MustExec("create table t (a int);")
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// For mocktikv, safe point is not initialized, we manually insert it for snapshot to use.
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safePointName := "tikv_gc_safe_point"
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safePointValue := "20060102-15:04:05 -0700"
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safePointComment := "All versions after safe point can be accessed. (DO NOT EDIT)"
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updateSafePoint := fmt.Sprintf(`INSERT INTO mysql.tidb VALUES ('%[1]s', '%[2]s', '%[3]s')
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ON DUPLICATE KEY
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UPDATE variable_value = '%[2]s', comment = '%[3]s'`, safePointName, safePointValue, safePointComment)
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tk.MustExec(updateSafePoint)
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snapshotTime := time.Now()
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tk.MustExec("drop table t;")
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tk.MustQuery("show table status;").Check(testkit.Rows())
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tk.MustExec("set @@tidb_snapshot = '" + snapshotTime.Format("2006-01-02 15:04:05.999999") + "'")
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result := tk.MustQuery("show table status;")
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c.Check(result.Rows()[0][0], Matches, "t")
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}
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