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show_test.go
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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 (
. "github.com/pingcap/check"
"github.com/pingcap/tidb/sessionctx/variable"
"github.com/pingcap/tidb/util/testkit"
"github.com/pingcap/tidb/util/testleak"
)
func (s *testSuite) TestShow(c *C) {
defer func() {
s.cleanEnv(c)
testleak.AfterTest(c)()
}()
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")
testSQL := `drop table if exists show_test`
tk.MustExec(testSQL)
testSQL = `create table SHOW_test (id int PRIMARY KEY AUTO_INCREMENT, c1 int comment "c1_comment", c2 int, c3 int default 1) ENGINE=InnoDB AUTO_INCREMENT=28934 DEFAULT CHARSET=utf8 COMMENT "table_comment";`
tk.MustExec(testSQL)
testSQL = "show columns from show_test;"
result := tk.MustQuery(testSQL)
c.Check(result.Rows(), HasLen, 4)
testSQL = "show create table show_test;"
result = tk.MustQuery(testSQL)
c.Check(result.Rows(), HasLen, 1)
row := result.Rows()[0]
// For issue https://github.com/pingcap/tidb/issues/1061
expectedRow := []interface{}{
"SHOW_test", "CREATE TABLE `SHOW_test` (\n `id` int(11) NOT NULL AUTO_INCREMENT,\n `c1` int(11) DEFAULT NULL COMMENT 'c1_comment',\n `c2` int(11) DEFAULT NULL,\n `c3` int(11) DEFAULT '1',\n PRIMARY KEY (`id`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=28934 COMMENT='table_comment'"}
for i, r := range row {
c.Check(r, Equals, expectedRow[i])
}
// For issue https://github.com/pingcap/tidb/issues/1918
testSQL = `create table ptest(
a int primary key,
b double NOT NULL DEFAULT 2.0,
c varchar(10) NOT NULL,
d time unique,
e timestamp NULL
);`
tk.MustExec(testSQL)
testSQL = "show create table ptest;"
result = tk.MustQuery(testSQL)
c.Check(result.Rows(), HasLen, 1)
row = result.Rows()[0]
expectedRow = []interface{}{
"ptest", "CREATE TABLE `ptest` (\n `a` int(11) NOT NULL,\n `b` double NOT NULL DEFAULT '2.0',\n `c` varchar(10) NOT NULL,\n `d` time DEFAULT NULL,\n `e` timestamp NULL DEFAULT NULL,\n PRIMARY KEY (`a`),\n UNIQUE KEY `d` (`d`)\n) ENGINE=InnoDB"}
for i, r := range row {
c.Check(r, Equals, expectedRow[i])
}
testSQL = "SHOW VARIABLES LIKE 'character_set_results';"
result = tk.MustQuery(testSQL)
c.Check(result.Rows(), HasLen, 1)
// Test case for index type and comment
tk.MustExec(`create table show_index (id int, c int, primary key (id), index cIdx using hash (c) comment "index_comment_for_cIdx");`)
testSQL = "SHOW index from show_index;"
result = tk.MustQuery(testSQL)
c.Check(result.Rows(), HasLen, 2)
expectedRow = []interface{}{
"show_index", int64(0), "PRIMARY", int64(1), "id", "utf8_bin",
int64(0), nil, nil, "", "BTREE", "", ""}
row = result.Rows()[0]
c.Check(row, HasLen, len(expectedRow))
for i, r := range row {
c.Check(r, Equals, expectedRow[i])
}
expectedRow = []interface{}{
"show_index", int64(1), "cIdx", int64(1), "c", "utf8_bin",
int64(0), nil, nil, "YES", "HASH", "", "index_comment_for_cIdx"}
row = result.Rows()[1]
c.Check(row, HasLen, len(expectedRow))
for i, r := range row {
c.Check(r, Equals, expectedRow[i])
}
// For show like with escape
testSQL = `show tables like 'show\_test'`
result = tk.MustQuery(testSQL)
rows := result.Rows()
c.Check(rows, HasLen, 1)
c.Check(rows[0], DeepEquals, []interface{}{"SHOW_test"})
var ss stats
variable.RegisterStatistics(ss)
testSQL = "show status like 'character_set_results';"
result = tk.MustQuery(testSQL)
c.Check(result.Rows(), NotNil)
tk.MustQuery("SHOW PROCEDURE STATUS WHERE Db='test'").Check(testkit.Rows())
tk.MustQuery("SHOW TRIGGERS WHERE Trigger ='test'").Check(testkit.Rows())
tk.MustQuery("SHOW processlist;").Check(testkit.Rows())
tk.MustQuery("SHOW EVENTS WHERE Db = 'test'").Check(testkit.Rows())
// Test show create database
testSQL = `create database show_test_DB`
tk.MustExec(testSQL)
testSQL = "show create database show_test_DB;"
result = tk.MustQuery(testSQL)
c.Check(result.Rows(), HasLen, 1)
row = result.Rows()[0]
expectedRow = []interface{}{
"show_test_DB", "CREATE DATABASE `show_test_DB` /* !40100 DEFAULT CHARACTER SET utf8 */"}
for i, r := range row {
c.Check(r, Equals, expectedRow[i])
}
tk.MustExec("use show_test_DB")
result = tk.MustQuery("SHOW index from show_index from test where Column_name = 'c'")
c.Check(result.Rows(), HasLen, 1)
}
type stats struct {
}
func (s stats) GetScope(status string) variable.ScopeFlag { return variable.DefaultScopeFlag }
func (s stats) Stats() (map[string]interface{}, error) {
m := make(map[string]interface{})
var a, b interface{}
b = "123"
m["test_interface_nil"] = a
m["test_interface"] = b
m["test_interface_slice"] = []interface{}{"a", "b", "c"}
return m, nil
}
func (s *testSuite) TestForeignKeyInShowCreateTable(c *C) {
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")
testSQL := `drop table if exists show_test`
tk.MustExec(testSQL)
testSQL = `drop table if exists t1`
tk.MustExec(testSQL)
testSQL = `CREATE TABLE t1 (id int PRIMARY KEY AUTO_INCREMENT)`
tk.MustExec(testSQL)
testSQL = "create table show_test (`id` int PRIMARY KEY AUTO_INCREMENT, FOREIGN KEY `Fk` (`id`) REFERENCES `t1` (`a`) ON DELETE CASCADE ON UPDATE CASCADE) ENGINE=InnoDB"
tk.MustExec(testSQL)
testSQL = "show create table show_test;"
result := tk.MustQuery(testSQL)
c.Check(result.Rows(), HasLen, 1)
row := result.Rows()[0]
expectedRow := []interface{}{
"show_test", "CREATE TABLE `show_test` (\n `id` int(11) NOT NULL AUTO_INCREMENT,\n PRIMARY KEY (`id`),\n CONSTRAINT `Fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) ON DELETE CASCADE ON UPDATE CASCADE\n) ENGINE=InnoDB"}
for i, r := range row {
c.Check(r, Equals, expectedRow[i])
}
testSQL = "alter table show_test drop foreign key `fk`"
tk.MustExec(testSQL)
testSQL = "show create table show_test;"
result = tk.MustQuery(testSQL)
c.Check(result.Rows(), HasLen, 1)
row = result.Rows()[0]
expectedRow = []interface{}{
"show_test", "CREATE TABLE `show_test` (\n `id` int(11) NOT NULL AUTO_INCREMENT,\n PRIMARY KEY (`id`)\n) ENGINE=InnoDB"}
for i, r := range row {
c.Check(r, Equals, expectedRow[i])
}
testSQL = "ALTER TABLE SHOW_TEST ADD CONSTRAINT `Fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) ON DELETE CASCADE ON UPDATE CASCADE\n "
tk.MustExec(testSQL)
testSQL = "show create table show_test;"
result = tk.MustQuery(testSQL)
c.Check(result.Rows(), HasLen, 1)
row = result.Rows()[0]
expectedRow = []interface{}{
"show_test", "CREATE TABLE `show_test` (\n `id` int(11) NOT NULL AUTO_INCREMENT,\n PRIMARY KEY (`id`),\n CONSTRAINT `Fk` FOREIGN KEY (`id`) REFERENCES `t1` (`id`) ON DELETE CASCADE ON UPDATE CASCADE\n) ENGINE=InnoDB"}
for i, r := range row {
c.Check(r, Equals, expectedRow[i])
}
}