164 lines
3.7 KiB
Go
164 lines
3.7 KiB
Go
// 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 stmts_test
|
|
|
|
import (
|
|
"strings"
|
|
|
|
. "github.com/pingcap/check"
|
|
"github.com/pingcap/tidb"
|
|
)
|
|
|
|
func (s *testStmtSuite) TestSelectWithoutFrom(c *C) {
|
|
tx := mustBegin(c, s.testDB)
|
|
rows, err := tx.Query("select 1 + 2*3")
|
|
c.Assert(err, IsNil)
|
|
|
|
var result int
|
|
for rows.Next() {
|
|
rows.Scan(&result)
|
|
c.Assert(result, Equals, 7)
|
|
}
|
|
|
|
rows.Close()
|
|
mustCommit(c, tx)
|
|
|
|
tx = mustBegin(c, s.testDB)
|
|
rows, err = tx.Query(`select _utf8"string";`)
|
|
c.Assert(err, IsNil)
|
|
matchRows(c, rows, [][]interface{}{{"string"}})
|
|
rows.Close()
|
|
mustCommit(c, tx)
|
|
}
|
|
|
|
func (s *testStmtSuite) TestSelectExplain(c *C) {
|
|
s.fillData(s.testDB, c)
|
|
|
|
strs := s.queryStrings(s.testDB, "explain select * from test where id = 1;", c)
|
|
// Must use index
|
|
if strings.Index(strs[0], "index") < 0 {
|
|
c.Fatalf("Should use index")
|
|
}
|
|
}
|
|
|
|
func (s *testStmtSuite) TestSelectOrderBy(c *C) {
|
|
s.fillData(s.testDB, c)
|
|
|
|
tx := mustBegin(c, s.testDB)
|
|
// Test star field
|
|
rows, err := tx.Query("select * from test where id = 1 order by id limit 1 offset 0;")
|
|
c.Assert(err, IsNil)
|
|
|
|
for rows.Next() {
|
|
var id int
|
|
var name string
|
|
rows.Scan(&id, &name)
|
|
c.Assert(id, Equals, 1)
|
|
c.Assert(name, Equals, "hello")
|
|
}
|
|
|
|
rows.Close()
|
|
mustCommit(c, tx)
|
|
|
|
tx = mustBegin(c, s.testDB)
|
|
// Test multiple field
|
|
rows, err = tx.Query("select id, name from test where id = 1 group by id, name limit 1 offset 0;")
|
|
c.Assert(err, IsNil)
|
|
|
|
for rows.Next() {
|
|
var id int
|
|
var name string
|
|
rows.Scan(&id, &name)
|
|
c.Assert(id, Equals, 1)
|
|
c.Assert(name, Equals, "hello")
|
|
}
|
|
|
|
rows.Close()
|
|
mustCommit(c, tx)
|
|
}
|
|
|
|
func (s *testStmtSuite) TestSelectDistinct(c *C) {
|
|
s.fillData(s.testDB, c)
|
|
|
|
tx := mustBegin(c, s.testDB)
|
|
rows, err := tx.Query("select distinct name from test;")
|
|
c.Assert(err, IsNil)
|
|
|
|
var cnt int
|
|
for rows.Next() {
|
|
var name string
|
|
rows.Scan(&name)
|
|
c.Assert(name, Equals, "hello")
|
|
cnt++
|
|
}
|
|
c.Assert(cnt, Equals, 1)
|
|
rows.Close()
|
|
mustCommit(c, tx)
|
|
}
|
|
|
|
func (s *testStmtSuite) TestSelectHaving(c *C) {
|
|
s.fillData(s.testDB, c)
|
|
|
|
// Test compile
|
|
stmtList, err := tidb.Compile(s.ctx, "select * from test where id = 2;")
|
|
c.Assert(err, IsNil)
|
|
|
|
str := stmtList[0].OriginText()
|
|
c.Assert(0, Less, len(str))
|
|
|
|
tx := mustBegin(c, s.testDB)
|
|
rows, err := tx.Query("select id, name from test where id in (1,3) having name like 'he%';")
|
|
c.Assert(err, IsNil)
|
|
|
|
for rows.Next() {
|
|
var id int
|
|
var name string
|
|
rows.Scan(&id, &name)
|
|
c.Assert(id, Equals, 1)
|
|
c.Assert(name, Equals, "hello")
|
|
}
|
|
|
|
rows.Close()
|
|
mustCommit(c, tx)
|
|
}
|
|
|
|
func (s *testStmtSuite) TestSelectErrorRow(c *C) {
|
|
tx := mustBegin(c, s.testDB)
|
|
_, err := tx.Query("select row(1, 1) from test")
|
|
c.Assert(err, NotNil)
|
|
|
|
_, err = tx.Query("select * from test group by row(1, 1);")
|
|
c.Assert(err, NotNil)
|
|
|
|
_, err = tx.Query("select * from test order by row(1, 1);")
|
|
c.Assert(err, NotNil)
|
|
|
|
_, err = tx.Query("select * from test having row(1, 1);")
|
|
c.Assert(err, NotNil)
|
|
|
|
_, err = tx.Query("select (select 1, 1) from test;")
|
|
c.Assert(err, NotNil)
|
|
|
|
_, err = tx.Query("select * from test group by (select 1, 1);")
|
|
c.Assert(err, NotNil)
|
|
|
|
_, err = tx.Query("select * from test order by (select 1, 1);")
|
|
c.Assert(err, NotNil)
|
|
|
|
_, err = tx.Query("select * from test having (select 1, 1);")
|
|
c.Assert(err, NotNil)
|
|
|
|
mustCommit(c, tx)
|
|
}
|