116 lines
4.4 KiB
Go
116 lines
4.4 KiB
Go
// Copyright 2016 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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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/executor"
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"github.com/pingcap/tidb/plan"
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"github.com/pingcap/tidb/util/testkit"
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"github.com/pingcap/tidb/util/testleak"
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)
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func (s *testSuite) TestPrepared(c *C) {
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defer func() {
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s.cleanEnv(c)
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testleak.AfterTest(c)()
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}()
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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 prepare_test")
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tk.MustExec("create table prepare_test (id int PRIMARY KEY AUTO_INCREMENT, c1 int, c2 int, c3 int default 1)")
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tk.MustExec("insert prepare_test (c1) values (1),(2),(NULL)")
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tk.MustExec(`prepare stmt_test_1 from 'select id from prepare_test where id > ?'; set @a = 1; execute stmt_test_1 using @a;`)
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tk.MustExec(`prepare stmt_test_2 from 'select 1'`)
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// Prepare multiple statement is not allowed.
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_, err := tk.Exec(`prepare stmt_test_3 from 'select id from prepare_test where id > ?;select id from prepare_test where id > ?;'`)
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c.Assert(executor.ErrPrepareMulti.Equal(err), IsTrue)
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// The variable count does not match.
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_, err = tk.Exec(`prepare stmt_test_4 from 'select id from prepare_test where id > ? and id < ?'; set @a = 1; execute stmt_test_4 using @a;`)
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c.Assert(executor.ErrWrongParamCount.Equal(err), IsTrue)
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// Prepare and deallocate prepared statement immediately.
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tk.MustExec(`prepare stmt_test_5 from 'select id from prepare_test where id > ?'; deallocate prepare stmt_test_5;`)
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// Statement not found.
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_, err = tk.Exec("deallocate prepare stmt_test_5")
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c.Assert(executor.ErrStmtNotFound.Equal(err), IsTrue)
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// The `stmt_test5` should not be found.
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_, err = tk.Exec(`set @a = 1; execute stmt_test_5 using @a;`)
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c.Assert(executor.ErrStmtNotFound.Equal(err), IsTrue)
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// Use parameter marker with argument will run prepared statement.
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result := tk.MustQuery("select distinct c1, c2 from prepare_test where c1 = ?", 1)
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result.Check([][]interface{}{{1, nil}})
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// Call Session PrepareStmt directly to get stmtId.
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query := "select c1, c2 from prepare_test where c1 = ?"
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stmtId, _, _, err := tk.Se.PrepareStmt(query)
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c.Assert(err, IsNil)
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_, err = tk.Se.ExecutePreparedStmt(stmtId, 1)
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c.Assert(err, IsNil)
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// Check that ast.Statement created by executor.CompileExecutePreparedStmt has query text.
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stmt := executor.CompileExecutePreparedStmt(tk.Se, stmtId, 1)
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c.Assert(stmt.OriginText(), Equals, query)
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// Make schema change.
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tk.Exec("create table prepare2 (a int)")
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// Should success as the changed schema do not affect the prepared statement.
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_, err = tk.Se.ExecutePreparedStmt(stmtId, 1)
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c.Assert(err, IsNil)
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// Drop a column so the prepared statement become invalid.
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tk.MustExec("alter table prepare_test drop column c2")
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// There should be schema changed error.
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_, err = tk.Se.ExecutePreparedStmt(stmtId, 1)
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c.Assert(executor.ErrSchemaChanged.Equal(err), IsTrue)
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// Coverage.
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exec := &executor.ExecuteExec{}
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exec.Next()
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exec.Close()
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}
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func (s *testSuite) TestPreparedLimitOffset(c *C) {
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defer func() {
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s.cleanEnv(c)
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testleak.AfterTest(c)()
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}()
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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 prepare_test")
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tk.MustExec("create table prepare_test (id int PRIMARY KEY AUTO_INCREMENT, c1 int, c2 int, c3 int default 1)")
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tk.MustExec("insert prepare_test (c1) values (1),(2),(NULL)")
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tk.MustExec(`prepare stmt_test_1 from 'select id from prepare_test limit ? offset ?'; set @a = 1, @b=1;`)
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r := tk.MustQuery(`execute stmt_test_1 using @a, @b;`)
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r.Check(testkit.Rows("2"))
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tk.MustExec(`set @a=1.1`)
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r = tk.MustQuery(`execute stmt_test_1 using @a, @b;`)
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r.Check(testkit.Rows("2"))
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tk.MustExec(`set @c="-1"`)
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_, err := tk.Exec("execute stmt_test_1 using @c, @c")
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c.Assert(plan.ErrWrongArguments.Equal(err), IsTrue)
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stmtID, _, _, err := tk.Se.PrepareStmt("select id from prepare_test limit ?")
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c.Assert(err, IsNil)
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_, err = tk.Se.ExecutePreparedStmt(stmtID, 1)
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c.Assert(err, IsNil)
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}
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