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tidb_test.go
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// Copyright 2015 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 tidb
import (
"database/sql"
"flag"
"fmt"
"os"
"runtime"
"sync"
"testing"
"time"
"github.com/ngaut/log"
. "github.com/pingcap/check"
"github.com/pingcap/tidb/kv"
"github.com/pingcap/tidb/mysql"
"github.com/pingcap/tidb/rset"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/util/errors2"
)
var store = flag.String("store", "memory", "registered store name, [memory, goleveldb, boltdb]")
func TestT(t *testing.T) {
TestingT(t)
}
var _ = Suite(&testMainSuite{})
var _ = Suite(&testSessionSuite{})
type testMainSuite struct {
dbName string
createDBSQL string
dropDBSQL string
useDBSQL string
createTableSQL string
insertSQL string
selectSQL string
}
func (s *testMainSuite) SetUpSuite(c *C) {
s.dbName = "test_main_db"
s.createDBSQL = fmt.Sprintf("create database if not exists %s;", s.dbName)
s.dropDBSQL = fmt.Sprintf("drop database %s;", s.dbName)
s.useDBSQL = fmt.Sprintf("use %s;", s.dbName)
s.createTableSQL = `
CREATE TABLE tbl_test(id INT NOT NULL DEFAULT 1, name varchar(255), PRIMARY KEY(id));
CREATE TABLE tbl_test1(id INT NOT NULL DEFAULT 2, name varchar(255), PRIMARY KEY(id), INDEX name(name));
CREATE TABLE tbl_test2(id INT NOT NULL DEFAULT 3, name varchar(255), PRIMARY KEY(id));`
s.selectSQL = `SELECT * from tbl_test;`
runtime.GOMAXPROCS(runtime.NumCPU())
log.SetLevelByString("error")
}
func (s *testMainSuite) TearDownSuite(c *C) {
removeStore(c, s.dbName)
}
func mustBegin(c *C, currDB *sql.DB) *sql.Tx {
tx, err := currDB.Begin()
c.Assert(err, IsNil)
return tx
}
func mustCommit(c *C, tx *sql.Tx) {
err := tx.Commit()
c.Assert(err, IsNil)
}
func mustExecuteSQL(c *C, tx *sql.Tx, sql string, args ...interface{}) sql.Result {
r, err := tx.Exec(sql, args...)
c.Assert(err, IsNil)
return r
}
func mustExec(c *C, currDB *sql.DB, sql string, args ...interface{}) sql.Result {
tx := mustBegin(c, currDB)
r := mustExecuteSQL(c, tx, sql, args...)
mustCommit(c, tx)
return r
}
func checkResult(c *C, r sql.Result, affectedRows int64, insertID int64) {
gotRows, err := r.RowsAffected()
c.Assert(err, IsNil)
c.Assert(gotRows, Equals, affectedRows)
gotID, err := r.LastInsertId()
c.Assert(err, IsNil)
c.Assert(gotID, Equals, insertID)
}
type testSessionSuite struct {
dbName string
createDBSQL string
dropDBSQL string
useDBSQL string
createTableSQL string
dropTableSQL string
insertSQL string
selectSQL string
}
func (s *testMainSuite) TestConcurrent(c *C) {
dbName := "test_concurrent_db"
defer removeStore(c, dbName)
testDB, err := sql.Open(DriverName, *store+"://"+dbName+"/"+dbName)
c.Assert(err, IsNil)
defer testDB.Close()
var wg sync.WaitGroup
// create db
createDBSQL := fmt.Sprintf("create database if not exists %s;", dbName)
dropDBSQL := fmt.Sprintf("drop database %s;", dbName)
useDBSQL := fmt.Sprintf("use %s;", dbName)
createTableSQL := ` CREATE TABLE test(id INT NOT NULL DEFAULT 1, name varchar(255), PRIMARY KEY(id)); `
mustExec(c, testDB, dropDBSQL)
mustExec(c, testDB, createDBSQL)
mustExec(c, testDB, useDBSQL)
mustExec(c, testDB, createTableSQL)
f := func(start, count int) {
defer wg.Done()
for i := 0; i < count; i++ {
// insert data
mustExec(c, testDB, fmt.Sprintf(`INSERT INTO test VALUES (%d, "hello");`, start+i))
}
}
step := 10
for i := 0; i < step; i++ {
wg.Add(1)
go f(i*step, step)
}
wg.Wait()
mustExec(c, testDB, dropDBSQL)
}
func (s *testMainSuite) TestTableInfoMeta(c *C) {
testDB, err := sql.Open(DriverName, *store+"://"+s.dbName+"/"+s.dbName)
c.Assert(err, IsNil)
defer testDB.Close()
// create db
mustExec(c, testDB, s.createDBSQL)
// use db
mustExec(c, testDB, s.useDBSQL)
// create table
mustExec(c, testDB, s.createTableSQL)
// insert data
r := mustExec(c, testDB, `INSERT INTO tbl_test VALUES (1, "hello");`)
checkResult(c, r, 1, 0)
r = mustExec(c, testDB, `INSERT INTO tbl_test VALUES (2, "hello");`)
checkResult(c, r, 1, 0)
r = mustExec(c, testDB, `UPDATE tbl_test SET name = "abc" where id = 2;`)
checkResult(c, r, 1, 0)
r = mustExec(c, testDB, `DELETE from tbl_test where id = 2;`)
checkResult(c, r, 1, 0)
// select data
tx := mustBegin(c, testDB)
rows, err := tx.Query(s.selectSQL)
c.Assert(err, IsNil)
defer rows.Close()
for rows.Next() {
var id int
var name string
rows.Scan(&id, &name)
c.Assert(id, Equals, 1)
c.Assert(name, Equals, "hello")
}
mustCommit(c, tx)
// drop db
mustExec(c, testDB, s.dropDBSQL)
}
func (s *testMainSuite) TestInfoSchema(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
rs := mustExecSQL(c, se, "SELECT CHARACTER_SET_NAME FROM INFORMATION_SCHEMA.CHARACTER_SETS WHERE CHARACTER_SET_NAME = 'utf8mb4'")
row, err := rs.FirstRow()
c.Assert(err, IsNil)
match(c, row, "utf8mb4")
}
func (s *testMainSuite) TestCaseInsensitive(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
mustExecSQL(c, se, "create table T (a text, B int)")
mustExecSQL(c, se, "insert t (A, b) values ('aaa', 1)")
rs := mustExecSQL(c, se, "select * from t")
fields, err := rs.Fields()
c.Assert(err, IsNil)
c.Assert(fields[0].Name, Equals, "a")
c.Assert(fields[1].Name, Equals, "B")
rs = mustExecSQL(c, se, "select A, b from t")
fields, err = rs.Fields()
c.Assert(err, IsNil)
c.Assert(fields[0].Name, Equals, "A")
c.Assert(fields[1].Name, Equals, "b")
mustExecSQL(c, se, "update T set b = B + 1")
mustExecSQL(c, se, "update T set B = b + 1")
rs = mustExecSQL(c, se, "select b from T")
rows, err := rs.Rows(-1, 0)
c.Assert(err, IsNil)
match(c, rows[0], 3)
mustExecSQL(c, se, s.dropDBSQL)
}
func (s *testMainSuite) TestDriverPrepare(c *C) {
testDB, err := sql.Open(DriverName, *store+"://"+s.dbName+"/"+s.dbName)
c.Assert(err, IsNil)
defer testDB.Close()
// create db
mustExec(c, testDB, s.createDBSQL)
// use db
mustExec(c, testDB, s.useDBSQL)
// create table
mustExec(c, testDB, "create table t (a int, b int)")
mustExec(c, testDB, "insert t values (?, ?)", 1, 2)
row := testDB.QueryRow("select * from t where 1 = ?", 1)
// TODO: This will fail test
// row := testDB.QueryRow("select ?, ? from t", "a", "b")
var a, b int
err = row.Scan(&a, &b)
c.Assert(err, IsNil)
c.Assert(a, Equals, 1)
c.Assert(b, Equals, 2)
mustExec(c, testDB, s.dropDBSQL)
}
// Testcase for delete panic
func (s *testMainSuite) TestDeletePanic(c *C) {
db, err := sql.Open("tidb", "memory://test/test")
defer db.Close()
_, err = db.Exec("create table t (c int)")
c.Assert(err, IsNil)
_, err = db.Exec("insert into t values (1), (2), (3)")
c.Assert(err, IsNil)
_, err = db.Query("delete from `t` where `c` = ?", 1)
c.Assert(err, IsNil)
rs, err := db.Query("delete from `t` where `c` = ?", 2)
c.Assert(err, IsNil)
cols, err := rs.Columns()
c.Assert(err, IsNil)
c.Assert(cols, HasLen, 0)
c.Assert(rs.Next(), IsFalse)
c.Assert(rs.Next(), IsFalse)
c.Assert(rs.Close(), IsNil)
}
// Testcase for arg type.
func (s *testMainSuite) TestCheckArgs(c *C) {
db, err := sql.Open("tidb", "memory://test/test")
defer db.Close()
c.Assert(err, IsNil)
mustExec(c, db, "create table if not exists t (c datetime)")
mustExec(c, db, "insert t values (?)", time.Now())
mustExec(c, db, "drop table t")
checkArgs(nil, true, false, int8(1), int16(1), int32(1), int64(1), 1,
uint8(1), uint16(1), uint32(1), uint64(1), uint(1), float32(1), float64(1),
"abc", []byte("abc"), time.Now(), time.Hour, time.Local)
}
func (s *testMainSuite) TestIsQuery(c *C) {
tbl := []struct {
sql string
ok bool
}{
{"/*comment*/ select 1;", true},
{"/*comment*/ /*comment*/ select 1;", true},
{"select /*comment*/ 1 /*comment*/;", true},
{"(select /*comment*/ 1 /*comment*/);", true},
}
for _, t := range tbl {
c.Assert(IsQuery(t.sql), Equals, t.ok, Commentf(t.sql))
}
}
func (s *testMainSuite) TestitrimSQL(c *C) {
tbl := []struct {
sql string
target string
}{
{"/*comment*/ select 1; ", "select 1;"},
{"/*comment*/ /*comment*/ select 1;", "select 1;"},
{"select /*comment*/ 1 /*comment*/;", "select /*comment*/ 1 /*comment*/;"},
{"/*comment select 1; ", "/*comment select 1;"},
}
for _, t := range tbl {
c.Assert(trimSQL(t.sql), Equals, t.target, Commentf(t.sql))
}
}
func sessionExec(c *C, se Session, sql string) ([]rset.Recordset, error) {
se.Execute("BEGIN;")
r, err := se.Execute(sql)
c.Assert(err, IsNil)
se.Execute("COMMIT;")
return r, err
}
func (s *testSessionSuite) SetUpSuite(c *C) {
s.dbName = "test_session_db"
s.createDBSQL = fmt.Sprintf("create database if not exists %s;", s.dbName)
s.dropDBSQL = fmt.Sprintf("drop database %s;", s.dbName)
s.useDBSQL = fmt.Sprintf("use %s;", s.dbName)
s.dropTableSQL = `Drop TABLE if exists t;`
s.createTableSQL = `CREATE TABLE t(id TEXT);`
s.selectSQL = `SELECT * from t;`
}
func (s *testSessionSuite) TearDownSuite(c *C) {
removeStore(c, s.dbName)
}
func (s *testSessionSuite) TestPrepare(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
// create table
mustExecSQL(c, se, s.dropTableSQL)
mustExecSQL(c, se, s.createTableSQL)
// insert data
mustExecSQL(c, se, `INSERT INTO t VALUES ("id");`)
id, ps, _, err := se.PrepareStmt("select id+? from t")
c.Assert(err, IsNil)
c.Assert(id, Equals, uint32(1))
c.Assert(ps, Equals, 1)
mustExecSQL(c, se, `set @a=1`)
_, err = se.ExecutePreparedStmt(id, "1")
c.Assert(err, IsNil)
err = se.DropPreparedStmt(id)
c.Assert(err, IsNil)
mustExecSQL(c, se, s.dropDBSQL)
}
func (s *testSessionSuite) TestAffectedRows(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
mustExecSQL(c, se, s.dropTableSQL)
mustExecSQL(c, se, s.createTableSQL)
mustExecSQL(c, se, `INSERT INTO t VALUES ("a");`)
c.Assert(int(se.AffectedRows()), Equals, 1)
mustExecSQL(c, se, `INSERT INTO t VALUES ("b");`)
c.Assert(int(se.AffectedRows()), Equals, 1)
mustExecSQL(c, se, `UPDATE t set id = 'c' where id = 'a';`)
c.Assert(int(se.AffectedRows()), Equals, 1)
mustExecSQL(c, se, `UPDATE t set id = 'a' where id = 'a';`)
c.Assert(int(se.AffectedRows()), Equals, 0)
mustExecSQL(c, se, `SELECT * from t;`)
c.Assert(int(se.AffectedRows()), Equals, 0)
mustExecSQL(c, se, s.dropTableSQL)
mustExecSQL(c, se, "create table t (id int, data int)")
mustExecSQL(c, se, `INSERT INTO t VALUES (1, 0), (0, 0), (1, 1);`)
mustExecSQL(c, se, `UPDATE t set id = 1 where data = 0;`)
c.Assert(int(se.AffectedRows()), Equals, 1)
mustExecSQL(c, se, s.dropTableSQL)
mustExecSQL(c, se, "create table t (id int, c1 timestamp);")
mustExecSQL(c, se, `insert t values(1, 0);`)
mustExecSQL(c, se, `UPDATE t set id = 1 where id = 1;`)
c.Assert(int(se.AffectedRows()), Equals, 0)
// With ON DUPLICATE KEY UPDATE, the affected-rows value per row is 1 if the row is inserted as a new row,
// 2 if an existing row is updated, and 0 if an existing row is set to its current values.
mustExecSQL(c, se, s.dropTableSQL)
mustExecSQL(c, se, "create table t (c1 int PRIMARY KEY, c2 int);")
mustExecSQL(c, se, `insert t values(1, 1);`)
mustExecSQL(c, se, `insert into t values (1, 1) on duplicate key update c2=2;`)
c.Assert(int(se.AffectedRows()), Equals, 2)
mustExecSQL(c, se, `insert into t values (1, 1) on duplicate key update c2=2;`)
c.Assert(int(se.AffectedRows()), Equals, 0)
se.SetClientCapability(mysql.ClientFoundRows)
mustExecSQL(c, se, s.dropTableSQL)
mustExecSQL(c, se, "create table t (id int, data int)")
mustExecSQL(c, se, `INSERT INTO t VALUES (1, 0), (0, 0), (1, 1);`)
mustExecSQL(c, se, `UPDATE t set id = 1 where data = 0;`)
c.Assert(int(se.AffectedRows()), Equals, 2)
sessionExec(c, se, s.dropDBSQL)
}
func (s *testSessionSuite) TestString(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
sessionExec(c, se, "select 1")
// here to check the panic bug in String() when txn is nil after committed.
c.Log(se.String())
}
func (s *testSessionSuite) TestResultField(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
// create table
mustExecSQL(c, se, s.dropTableSQL)
mustExecSQL(c, se, "create table t (id int);")
mustExecSQL(c, se, `INSERT INTO t VALUES (1);`)
mustExecSQL(c, se, `INSERT INTO t VALUES (2);`)
r := mustExecSQL(c, se, `SELECT count(*) from t;`)
c.Assert(r, NotNil)
_, err := r.Rows(-1, 0)
c.Assert(err, IsNil)
fields, err := r.Fields()
c.Assert(err, IsNil)
c.Assert(len(fields), Equals, 1)
field := fields[0]
c.Assert(field.Tp, Equals, mysql.TypeLonglong)
c.Assert(field.Flen, Equals, 21)
mustExecSQL(c, se, s.dropDBSQL)
}
func (s *testSessionSuite) TestPrimaryKeyAutoincrement(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
mustExecSQL(c, se, "drop table if exists t")
mustExecSQL(c, se, "create table t (id BIGINT PRIMARY KEY AUTO_INCREMENT NOT NULL, name varchar(255) UNIQUE NOT NULL, status int)")
mustExecSQL(c, se, "insert t (name) values (?)", "abc")
id := se.LastInsertID()
c.Check(id != 0, IsTrue)
se2 := newSession(c, store, s.dbName)
rs := mustExecSQL(c, se2, "select * from t")
c.Assert(rs, NotNil)
row, err := rs.FirstRow()
c.Assert(err, IsNil)
match(c, row, id, "abc", nil)
mustExecSQL(c, se, "update t set name = 'abc', status = 1 where id = ?", id)
rs = mustExecSQL(c, se2, "select * from t")
c.Assert(rs, NotNil)
row, err = rs.FirstRow()
c.Assert(err, IsNil)
match(c, row, id, "abc", 1)
// Check for pass bool param to tidb prepared statement
mustExecSQL(c, se, "drop table if exists t")
mustExecSQL(c, se, "create table t (id tiny)")
mustExecSQL(c, se, "insert t values (?)", true)
rs = mustExecSQL(c, se, "select * from t")
c.Assert(rs, NotNil)
row, err = rs.FirstRow()
c.Assert(err, IsNil)
match(c, row, int8(1))
mustExecSQL(c, se, s.dropDBSQL)
}
func (s *testSessionSuite) TestAutoincrementID(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
mustExecSQL(c, se, "drop table if exists t")
mustExecSQL(c, se, "create table t (id BIGINT PRIMARY KEY AUTO_INCREMENT NOT NULL)")
mustExecSQL(c, se, "insert t values ()")
mustExecSQL(c, se, "insert t values ()")
mustExecSQL(c, se, "insert t values ()")
se.Execute("drop table if exists t;")
mustExecSQL(c, se, "create table t (id BIGINT PRIMARY KEY AUTO_INCREMENT NOT NULL)")
mustExecSQL(c, se, "insert t values ()")
lastID := se.LastInsertID()
c.Assert(lastID, Less, uint64(4))
mustExecSQL(c, se, "insert t () values ()")
c.Assert(se.LastInsertID(), Greater, lastID)
mustExecSQL(c, se, "insert t () select 100")
mustExecSQL(c, se, s.dropDBSQL)
}
func checkTxn(c *C, se Session, stmt string, expect uint16) {
mustExecSQL(c, se, stmt)
if expect == 0 {
c.Assert(se.(*session).txn, IsNil)
return
}
c.Assert(se.(*session).txn, NotNil)
}
func checkAutocommit(c *C, se Session, expect uint16) {
ret := variable.GetSessionVars(se.(*session)).Status & mysql.ServerStatusAutocommit
c.Assert(ret, Equals, expect)
}
// See: https://dev.mysql.com/doc/internals/en/status-flags.html
func (s *testSessionSuite) TestAutocommit(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
checkTxn(c, se, "drop table if exists t;", 0)
checkAutocommit(c, se, 2)
checkTxn(c, se, "create table t (id BIGINT PRIMARY KEY AUTO_INCREMENT NOT NULL)", 0)
checkAutocommit(c, se, 2)
checkTxn(c, se, "insert t values ()", 0)
checkAutocommit(c, se, 2)
checkTxn(c, se, "begin", 1)
checkAutocommit(c, se, 2)
checkTxn(c, se, "insert t values ()", 1)
checkAutocommit(c, se, 2)
checkTxn(c, se, "drop table if exists t;", 0)
checkAutocommit(c, se, 2)
checkTxn(c, se, "create table t (id BIGINT PRIMARY KEY AUTO_INCREMENT NOT NULL)", 0)
checkAutocommit(c, se, 2)
checkTxn(c, se, "set autocommit=0;", 0)
checkAutocommit(c, se, 0)
checkTxn(c, se, "insert t values ()", 1)
checkAutocommit(c, se, 0)
checkTxn(c, se, "commit", 0)
checkAutocommit(c, se, 0)
checkTxn(c, se, "drop table if exists t;", 0)
checkAutocommit(c, se, 0)
checkTxn(c, se, "set autocommit=1;", 0)
checkAutocommit(c, se, 2)
mustExecSQL(c, se, s.dropDBSQL)
}
func checkInTrans(c *C, se Session, stmt string, expect uint16) {
checkTxn(c, se, stmt, expect)
ret := variable.GetSessionVars(se.(*session)).Status & mysql.ServerStatusInTrans
c.Assert(ret, Equals, expect)
}
// See: https://dev.mysql.com/doc/internals/en/status-flags.html
func (s *testSessionSuite) TestInTrans(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
checkInTrans(c, se, "drop table if exists t;", 0)
checkInTrans(c, se, "create table t (id BIGINT PRIMARY KEY AUTO_INCREMENT NOT NULL)", 0)
checkInTrans(c, se, "insert t values ()", 0)
checkInTrans(c, se, "begin", 1)
checkInTrans(c, se, "insert t values ()", 1)
checkInTrans(c, se, "drop table if exists t;", 0)
checkInTrans(c, se, "create table t (id BIGINT PRIMARY KEY AUTO_INCREMENT NOT NULL)", 0)
checkInTrans(c, se, "insert t values ()", 0)
checkInTrans(c, se, "commit", 0)
checkInTrans(c, se, "insert t values ()", 0)
checkInTrans(c, se, "set autocommit=O;", 0)
checkInTrans(c, se, "begin", 1)
checkInTrans(c, se, "insert t values ()", 1)
checkInTrans(c, se, "commit", 0)
checkInTrans(c, se, "insert t values ()", 1)
checkInTrans(c, se, "commit", 0)
checkInTrans(c, se, "set autocommit=1;", 0)
checkInTrans(c, se, "drop table if exists t;", 0)
checkInTrans(c, se, "create table t (id BIGINT PRIMARY KEY AUTO_INCREMENT NOT NULL)", 0)
checkInTrans(c, se, "begin", 1)
checkInTrans(c, se, "insert t values ()", 1)
checkInTrans(c, se, "rollback", 0)
mustExecSQL(c, se, s.dropDBSQL)
}
// See: http://dev.mysql.com/doc/refman/5.7/en/commit.html
func (s *testSessionSuite) TestRowLock(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
se1 := newSession(c, store, s.dbName)
se2 := newSession(c, store, s.dbName)
mustExecSQL(c, se, "drop table if exists t")
c.Assert(se.(*session).txn, IsNil)
mustExecSQL(c, se, "create table t (c1 int, c2 int, c3 int)")
mustExecSQL(c, se, "insert t values (11, 2, 3)")
mustExecSQL(c, se, "insert t values (12, 2, 3)")
mustExecSQL(c, se, "insert t values (13, 2, 3)")
mustExecSQL(c, se1, "begin")
mustExecSQL(c, se1, "update t set c2=21 where c1=11")
mustExecSQL(c, se2, "begin")
mustExecSQL(c, se2, "update t set c2=211 where c1=11")
mustExecSQL(c, se2, "commit")
_, err := exec(c, se1, "commit")
// row lock conflict but can still success
if errors2.ErrorNotEqual(err, kv.ErrConditionNotMatch) {
c.Fail()
}
// Retry should success
err = se.Retry()
c.Assert(err, IsNil)
mustExecSQL(c, se1, "begin")
mustExecSQL(c, se1, "update t set c2=21 where c1=11")
mustExecSQL(c, se2, "begin")
mustExecSQL(c, se2, "update t set c2=22 where c1=12")
mustExecSQL(c, se2, "commit")
mustExecSQL(c, se1, "commit")
mustExecSQL(c, se, s.dropDBSQL)
}
func (s *testSessionSuite) TestSelectForUpdate(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
se1 := newSession(c, store, s.dbName)
se2 := newSession(c, store, s.dbName)
mustExecSQL(c, se, "drop table if exists t")
c.Assert(se.(*session).txn, IsNil)
mustExecSQL(c, se, "create table t (c1 int, c2 int, c3 int)")
mustExecSQL(c, se, "insert t values (11, 2, 3)")
mustExecSQL(c, se, "insert t values (12, 2, 3)")
mustExecSQL(c, se, "insert t values (13, 2, 3)")
// conflict
mustExecSQL(c, se1, "begin")
rs, err := exec(c, se1, "select * from t where c1=11 for update")
_, err = rs.Rows(-1, 0)
mustExecSQL(c, se2, "begin")
mustExecSQL(c, se2, "update t set c2=211 where c1=11")
mustExecSQL(c, se2, "commit")
_, err = exec(c, se1, "commit")
c.Assert(err, NotNil)
err = se1.Retry()
// retry should fail
c.Assert(err, NotNil)
// not conflict
mustExecSQL(c, se1, "begin")
rs, err = exec(c, se1, "select * from t where c1=11 for update")
_, err = rs.Rows(-1, 0)
mustExecSQL(c, se2, "begin")
mustExecSQL(c, se2, "update t set c2=22 where c1=12")
mustExecSQL(c, se2, "commit")
mustExecSQL(c, se1, "commit")
// not conflict, auto commit
mustExecSQL(c, se1, "set @@autocommit=1;")
rs, err = exec(c, se1, "select * from t where c1=11 for update")
_, err = rs.Rows(-1, 0)
mustExecSQL(c, se2, "begin")
mustExecSQL(c, se2, "update t set c2=211 where c1=11")
mustExecSQL(c, se2, "commit")
_, err = exec(c, se1, "commit")
c.Assert(err, IsNil)
mustExecSQL(c, se, s.dropDBSQL)
err = se.Close()
c.Assert(err, IsNil)
err = se1.Close()
c.Assert(err, IsNil)
err = se2.Close()
c.Assert(err, IsNil)
}
func (s *testSessionSuite) TestRow(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
r := mustExecSQL(c, se, "select row(1, 1) in (row(1, 1))")
row, err := r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1)
r = mustExecSQL(c, se, "select row(1, 1) in (row(1, 0))")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 0)
r = mustExecSQL(c, se, "select row(1, 1) in (select 1, 1)")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1)
r = mustExecSQL(c, se, "select row(1, 1) > row(1, 0)")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1)
r = mustExecSQL(c, se, "select row(1, 1) > (select 1, 0)")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1)
r = mustExecSQL(c, se, "select 1 > (select 1)")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 0)
r = mustExecSQL(c, se, "select (select 1)")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1)
}
func (s *testSessionSuite) TestIndex(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
mustExecSQL(c, se, "create table if not exists test_index (c1 int, c double, index(c1), index(c))")
mustExecSQL(c, se, "insert into test_index values (1, 2), (3, null)")
r := mustExecSQL(c, se, "select c1 from test_index where c > 0")
rows, err := r.Rows(-1, 0)
c.Assert(err, IsNil)
c.Assert(rows, HasLen, 1)
match(c, rows[0], 1)
mustExecSQL(c, se, "drop table if exists t1, t2")
mustExecSQL(c, se, `
create table t1 (c1 int, primary key(c1));
create table t2 (c2 int, primary key(c2));
insert into t1 values (1), (2);
insert into t2 values (2);`)
r = mustExecSQL(c, se, "select * from t1 left join t2 on t1.c1 = t2.c2 order by t1.c1")
rows, err = r.Rows(-1, 0)
matches(c, rows, [][]interface{}{{1, nil}, {2, 2}})
r = mustExecSQL(c, se, "select * from t1 left join t2 on t1.c1 = t2.c2 where t2.c2 < 10")
rows, err = r.Rows(-1, 0)
matches(c, rows, [][]interface{}{{2, 2}})
}
func (s *testSessionSuite) TestMySQLTypes(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
r := mustExecSQL(c, se, `select 0x01 + 1, x'4D7953514C' = "MySQL"`)
row, err := r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 2, 1)
r = mustExecSQL(c, se, `select 0b01 + 1, 0b01000001 = "A"`)
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 2, 1)
}
func (s *testSessionSuite) TestExpression(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
r := mustExecSQL(c, se, `select + (1 > 0), -(1 >0), + (1 < 0), - (1 < 0)`)
row, err := r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1, -1, 0, 0)
r = mustExecSQL(c, se, "select 1 <=> 1, 1 <=> null, null <=> null, null <=> (select null)")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1, 0, 1, 1)
}
func (s *testSessionSuite) TestSelect(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
mustExecSQL(c, se, "create table if not exists t (c1 int, c2 int)")
mustExecSQL(c, se, "create table if not exists t1 (c1 int, c2 int)")
_, err := se.Execute("select * from t as a join t as a")
c.Assert(err, NotNil)
_, err = se.Execute("select * from t join t1 as t")
c.Assert(err, NotNil)
_, err = se.Execute("select * from t join test.t")
c.Assert(err, NotNil)
_, err = se.Execute("select * from t as a join (select 1) as a")
c.Assert(err, IsNil)
r := mustExecSQL(c, se, "select 1, 2 from dual")
row, err := r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1, 2)
r = mustExecSQL(c, se, "select 1, 2 from dual where not exists (select * from t where c1=2)")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1, 2)
r = mustExecSQL(c, se, "select 1, 2")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1, 2)
r = mustExecSQL(c, se, `select '''a''', """a""", 'pingcap ''-->'' tidb'`)
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, `'a'`, `"a"`, `pingcap '-->' tidb`)
r = mustExecSQL(c, se, `select '\'a\'', "\"a\"";`)
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, `'a'`, `"a"`)
mustExecSQL(c, se, "drop table if exists t")
mustExecSQL(c, se, "create table t (c varchar(20))")
mustExecSQL(c, se, `insert t values("pingcap '-->' tidb")`)
r = mustExecSQL(c, se, `select * from t where c like 'pingcap ''-->'' tidb'`)
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, `pingcap '-->' tidb`)
mustExecSQL(c, se, "drop table if exists t1")
mustExecSQL(c, se, "drop table if exists t2")
mustExecSQL(c, se, "drop table if exists t3")
mustExecSQL(c, se, "create table t1 (c1 int, c11 int)")
mustExecSQL(c, se, "create table t2 (c2 int)")
mustExecSQL(c, se, "create table t3 (c3 int)")
mustExecSQL(c, se, "insert into t1 values (1, 1), (2, 2), (3, 3)")
mustExecSQL(c, se, "insert into t2 values (1), (1), (2)")
mustExecSQL(c, se, "insert into t3 values (1), (3)")
r = mustExecSQL(c, se, "select * from t1 left join t2 on t1.c1 = t2.c2 left join t3 on t1.c1 = t3.c3 order by t1.c1, t2.c2, t3.c3")
rows, err := r.Rows(-1, 0)
c.Assert(err, IsNil)
c.Assert(rows, HasLen, 4)
match(c, rows[0], 1, 1, 1, 1)
match(c, rows[1], 1, 1, 1, 1)
match(c, rows[2], 2, 2, 2, nil)
match(c, rows[3], 3, 3, nil, 3)
mustExecSQL(c, se, "drop table if exists t")
mustExecSQL(c, se, "create table t (c float(8))")
mustExecSQL(c, se, "insert into t values (3.12)")
r = mustExecSQL(c, se, "select * from t")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 3.12)
mustExecSQL(c, se, `drop table if exists t;create table t (c int);insert into t values (1);`)
r = mustExecSQL(c, se, "select a.c from t as a where c between null and 2")
row, err = r.FirstRow()
c.Assert(err, IsNil)
c.Assert(row, IsNil)
mustExecSQL(c, se, "drop table if exists t1, t2, t3")
mustExecSQL(c, se, `
create table t1 (c1 int);
create table t2 (c2 int);
create table t3 (c3 int);
insert into t1 values (1), (2);
insert into t2 values (2);
insert into t3 values (3);`)
r = mustExecSQL(c, se, "select * from t1 left join t2 on t1.c1 = t2.c2 left join t3 on t1.c1 = t3.c3 order by t1.c1")
rows, err = r.Rows(-1, 0)
c.Assert(err, IsNil)
matches(c, rows, [][]interface{}{{1, nil, nil}, {2, 2, nil}})
mustExecFailed(c, se, "select * from t1 left join t2 on t1.c1 = t3.c3 left join on t3 on t1.c1 = t2.c2")
// For issue 393
mustExecSQL(c, se, "drop table if exists t")
mustExecSQL(c, se, "create table t (b blob)")
mustExecSQL(c, se, `insert t values('\x01')`)
r = mustExecSQL(c, se, `select length(b) from t`)
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 3)
}
func (s *testSessionSuite) TestSubQuery(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
mustExecSQL(c, se, "create table if not exists t1 (c1 int, c2 int)")
mustExecSQL(c, se, "create table if not exists t2 (c1 int, c2 int)")
mustExecSQL(c, se, "insert into t1 values (1, 1), (2, 2)")
mustExecSQL(c, se, "insert into t2 values (1, 1), (1, 2)")
r := mustExecSQL(c, se, `select c1 from t1 where c1 = (select c2 from t2 where t1.c2 = t2.c2)`)
row, err := r.FirstRow()
c.Assert(err, IsNil)
match(c, row, 1)
r = mustExecSQL(c, se, `select (select count(c1) from t2 where t2.c1 != t1.c2) from t1`)
rows, err := r.Rows(-1, 0)
c.Assert(err, IsNil)
c.Assert(rows, HasLen, 2)
match(c, rows[0], 0)
match(c, rows[1], 2)
mustExecMatch(c, se, "select a.c1, a.c2 from (select c1 as c1, c1 as c2 from t1) as a", [][]interface{}{{1, 1}, {2, 2}})
}
func (s *testSessionSuite) TestShow(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
mustExecSQL(c, se, "set global autocommit=1")
r := mustExecSQL(c, se, "show global variables where variable_name = 'autocommit'")
row, err := r.FirstRow()
c.Assert(err, IsNil)
match(c, row, "autocommit", 1)
mustExecSQL(c, se, "drop table if exists t")
mustExecSQL(c, se, "create table if not exists t (c int)")
r = mustExecSQL(c, se, `show columns from t`)
rows, err := r.Rows(-1, 0)
c.Assert(err, IsNil)
c.Assert(rows, HasLen, 1)
match(c, rows[0], "c", "int(11)", "YES", "", nil, "")
r = mustExecSQL(c, se, "show collation where Charset = 'utf8' and Collation = 'utf8_bin'")
row, err = r.FirstRow()
c.Assert(err, IsNil)
match(c, row, "utf8_bin", "utf8", 83, "", "Yes", 1)
r = mustExecSQL(c, se, "show tables")
row, err = r.FirstRow()
c.Assert(err, IsNil)
c.Assert(row, HasLen, 1)
r = mustExecSQL(c, se, "show full tables")
row, err = r.FirstRow()
c.Assert(err, IsNil)
c.Assert(row, HasLen, 2)
r = mustExecSQL(c, se, "show create table t")
row, err = r.FirstRow()
c.Assert(err, IsNil)
c.Assert(row, HasLen, 2)
c.Assert(row[0], Equals, "t")
}
func (s *testSessionSuite) TestTimeFunc(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
last := time.Now().Format(mysql.TimeFormat)
r := mustExecSQL(c, se, "select now(), now(6), current_timestamp, current_timestamp(), current_timestamp(6), sysdate(), sysdate(6)")
row, err := r.FirstRow()
c.Assert(err, IsNil)
for _, t := range row {
n, ok := t.(mysql.Time)
c.Assert(ok, IsTrue)
c.Assert(n.String(), GreaterEqual, last)
}
last = time.Now().Format(mysql.DateFormat)
r = mustExecSQL(c, se, "select current_date, current_date(), curdate()")
row, err = r.FirstRow()
c.Assert(err, IsNil)
for _, t := range row {
n, ok := t.(mysql.Time)
c.Assert(ok, IsTrue)
c.Assert(n.String(), GreaterEqual, last)
}
}
func (s *testSessionSuite) TestBit(c *C) {
store := newStore(c, s.dbName)
se := newSession(c, store, s.dbName)
mustExecSQL(c, se, "drop table if exists t")
mustExecSQL(c, se, "create table t (c1 bit(2))")
mustExecSQL(c, se, "insert into t values (0), (1), (2), (3)")
_, err := exec(c, se, "insert into t values (4)")
c.Assert(err, NotNil)
r := mustExecSQL(c, se, "select * from t where c1 = 2")
row, err := r.FirstRow()
c.Assert(err, IsNil)
c.Assert(row[0], Equals, mysql.Bit{Value: 2, Width: 2})
}