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// Copyright 2016 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 executor_test
import (
"fmt"
"unicode/utf8"
. "github.com/pingcap/check"
"github.com/pingcap/parser/terror"
"github.com/pingcap/tidb/config"
"github.com/pingcap/tidb/table"
"github.com/pingcap/tidb/util/testkit"
)
const (
strictModeSQL = "set sql_mode = 'STRICT_TRANS_TABLES'"
nonStrictModeSQL = "set sql_mode = ''"
)
func (s *testSuite1) TestStatementContext(c *C) {
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")
tk.MustExec("create table sc (a int)")
tk.MustExec("insert sc values (1), (2)")
tk.MustExec(strictModeSQL)
tk.MustQuery("select * from sc where a > cast(1.1 as decimal)").Check(testkit.Rows("2"))
tk.MustExec("update sc set a = 4 where a > cast(1.1 as decimal)")
tk.MustExec(nonStrictModeSQL)
tk.MustExec("update sc set a = 3 where a > cast(1.1 as decimal)")
tk.MustQuery("select * from sc").Check(testkit.Rows("1", "3"))
tk.MustExec(strictModeSQL)
tk.MustExec("delete from sc")
tk.MustExec("insert sc values ('1.8'+1)")
tk.MustQuery("select * from sc").Check(testkit.Rows("3"))
// Handle coprocessor flags, '1x' is an invalid int.
// UPDATE and DELETE do select request first which is handled by coprocessor.
// In strict mode we expect error.
_, err := tk.Exec("update sc set a = 4 where a > '1x'")
c.Assert(err, NotNil)
_, err = tk.Exec("delete from sc where a < '1x'")
c.Assert(err, NotNil)
tk.MustQuery("select * from sc where a > '1x'").Check(testkit.Rows("3"))
// Non-strict mode never returns error.
tk.MustExec(nonStrictModeSQL)
tk.MustExec("update sc set a = 4 where a > '1x'")
tk.MustExec("delete from sc where a < '1x'")
tk.MustQuery("select * from sc where a > '1x'").Check(testkit.Rows("4"))
// Test invalid UTF8
tk.MustExec("create table sc2 (a varchar(255))")
// Insert an invalid UTF8
tk.MustExec("insert sc2 values (unhex('4040ffff'))")
c.Assert(tk.Se.GetSessionVars().StmtCtx.WarningCount(), Greater, uint16(0))
tk.MustQuery("select * from sc2").Check(testkit.Rows("@@"))
tk.MustExec(strictModeSQL)
_, err = tk.Exec("insert sc2 values (unhex('4040ffff'))")
c.Assert(err, NotNil)
c.Assert(terror.ErrorEqual(err, table.ErrTruncatedWrongValueForField), IsTrue, Commentf("err %v", err))
tk.MustExec("set @@tidb_skip_utf8_check = '1'")
_, err = tk.Exec("insert sc2 values (unhex('4040ffff'))")
c.Assert(err, IsNil)
tk.MustQuery("select length(a) from sc2").Check(testkit.Rows("2", "4"))
tk.MustExec("set @@tidb_skip_utf8_check = '0'")
runeErrStr := string(utf8.RuneError)
tk.MustExec(fmt.Sprintf("insert sc2 values ('%s')", runeErrStr))
// Test non-BMP characters.
tk.MustExec(nonStrictModeSQL)
tk.MustExec("drop table if exists t1")
tk.MustExec("create table t1(a varchar(100) charset utf8);")
defer tk.MustExec("drop table if exists t1")
tk.MustExec("insert t1 values (unhex('f09f8c80'))")
c.Assert(tk.Se.GetSessionVars().StmtCtx.WarningCount(), Greater, uint16(0))
tk.MustQuery("select * from t1").Check(testkit.Rows(""))
tk.MustExec("insert t1 values (unhex('4040f09f8c80'))")
c.Assert(tk.Se.GetSessionVars().StmtCtx.WarningCount(), Greater, uint16(0))
tk.MustQuery("select * from t1").Check(testkit.Rows("", "@@"))
tk.MustQuery("select length(a) from t1").Check(testkit.Rows("0", "2"))
tk.MustExec(strictModeSQL)
_, err = tk.Exec("insert t1 values (unhex('f09f8c80'))")
c.Assert(err, NotNil)
c.Assert(terror.ErrorEqual(err, table.ErrTruncatedWrongValueForField), IsTrue, Commentf("err %v", err))
_, err = tk.Exec("insert t1 values (unhex('F0A48BAE'))")
c.Assert(err, NotNil)
c.Assert(terror.ErrorEqual(err, table.ErrTruncatedWrongValueForField), IsTrue, Commentf("err %v", err))
config.UpdateGlobal(func(conf *config.Config) {
conf.CheckMb4ValueInUTF8 = false
})
tk.MustExec("insert t1 values (unhex('f09f8c80'))")
config.UpdateGlobal(func(conf *config.Config) {
conf.CheckMb4ValueInUTF8 = true
})
_, err = tk.Exec("insert t1 values (unhex('F0A48BAE'))")
c.Assert(err, NotNil)
}