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Followup to Bug#42546 Backup: RESTORE fails, thinking it finds an existing table This patch updates lowercase_table2.test with the changed error message CREATE TABLE produces if it fails because it finds an matching TABLE_SHARE in the TDC even if the .FRM/.MYD has been removed from disk. With the changes introduced in Bug#42546, CREATE TABLE uses open_tables() which will find the TDC entry and fail in open_table_from_share() with ER_FILE_NOT_FOUND. Before, CREATE TABLE would not use open_tables() and fail with ER_TABLE_EXISTS_ERROR upon finding the TDC entry in mysql_create_table_no_lock().
250 lines
7.0 KiB
Plaintext
250 lines
7.0 KiB
Plaintext
DROP TABLE IF EXISTS t1,t2,t3,t2aA,t1Aa;
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DROP DATABASE IF EXISTS `TEST_$1`;
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DROP DATABASE IF EXISTS `test_$1`;
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DROP DATABASE IF EXISTS mysqltest_LC2;
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CREATE TABLE T1 (a int);
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INSERT INTO T1 VALUES (1);
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SHOW TABLES LIKE "T1";
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Tables_in_test (T1)
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T1
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SHOW TABLES LIKE "t1";
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Tables_in_test (t1)
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T1
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SHOW CREATE TABLE T1;
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Table Create Table
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T1 CREATE TABLE `T1` (
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`a` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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RENAME TABLE T1 TO T2;
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SHOW TABLES LIKE "T2";
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Tables_in_test (T2)
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T2
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SELECT * FROM t2;
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a
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1
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RENAME TABLE T2 TO t3;
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SHOW TABLES LIKE "T3";
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Tables_in_test (T3)
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t3
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RENAME TABLE T3 TO T1;
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SHOW TABLES LIKE "T1";
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Tables_in_test (T1)
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T1
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ALTER TABLE T1 add b int;
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SHOW TABLES LIKE "T1";
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Tables_in_test (T1)
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T1
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ALTER TABLE T1 RENAME T2;
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SHOW TABLES LIKE "T2";
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Tables_in_test (T2)
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T2
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LOCK TABLE T2 WRITE;
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ALTER TABLE T2 drop b;
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SHOW TABLES LIKE "T2";
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Tables_in_test (T2)
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T2
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UNLOCK TABLES;
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RENAME TABLE T2 TO T1;
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SHOW TABLES LIKE "T1";
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Tables_in_test (T1)
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T1
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SELECT * from T1;
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a
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1
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DROP TABLE T1;
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CREATE DATABASE `TEST_$1`;
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SHOW DATABASES LIKE "TEST%";
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Database (TEST%)
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TEST_$1
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DROP DATABASE `test_$1`;
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CREATE TABLE T1 (a int) engine=innodb;
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INSERT INTO T1 VALUES (1);
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SHOW TABLES LIKE "T1";
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Tables_in_test (T1)
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T1
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SHOW TABLES LIKE "t1";
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Tables_in_test (t1)
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T1
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SHOW CREATE TABLE T1;
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Table Create Table
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T1 CREATE TABLE `T1` (
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`a` int(11) DEFAULT NULL
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) ENGINE=InnoDB DEFAULT CHARSET=latin1
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RENAME TABLE T1 TO T2;
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SHOW TABLES LIKE "T2";
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Tables_in_test (T2)
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T2
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SELECT * FROM t2;
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a
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1
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RENAME TABLE T2 TO t3;
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SHOW TABLES LIKE "T3";
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Tables_in_test (T3)
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t3
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RENAME TABLE T3 TO T1;
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SHOW TABLES LIKE "T1";
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Tables_in_test (T1)
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T1
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ALTER TABLE T1 add b int;
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SHOW TABLES LIKE "T1";
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Tables_in_test (T1)
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T1
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ALTER TABLE T1 RENAME T2;
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SHOW TABLES LIKE "T2";
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Tables_in_test (T2)
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T2
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LOCK TABLE T2 WRITE;
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ALTER TABLE T2 drop b;
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SHOW TABLES LIKE "T2";
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Tables_in_test (T2)
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T2
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UNLOCK TABLES;
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RENAME TABLE T2 TO T1;
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SHOW TABLES LIKE "T1";
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Tables_in_test (T1)
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T1
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SELECT * from T1;
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a
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1
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DROP TABLE T1;
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create table T1 (EVENT_ID int auto_increment primary key, LOCATION char(20));
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insert into T1 values (NULL,"Mic-4"),(NULL,"Mic-5"),(NULL,"Mic-6");
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SELECT LOCATION FROM T1 WHERE EVENT_ID=2 UNION ALL SELECT LOCATION FROM T1 WHERE EVENT_ID=3;
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LOCATION
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Mic-5
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Mic-6
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SELECT LOCATION FROM T1 WHERE EVENT_ID=2 UNION ALL SELECT LOCATION FROM T1 WHERE EVENT_ID=3;
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LOCATION
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Mic-5
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Mic-6
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SELECT LOCATION FROM T1 WHERE EVENT_ID=2 UNION ALL SELECT LOCATION FROM T1 WHERE EVENT_ID=3;
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LOCATION
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Mic-5
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Mic-6
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drop table T1;
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create table T1 (A int);
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alter table T1 add index (A);
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show tables like 'T1%';
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Tables_in_test (T1%)
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T1
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alter table t1 add index (A);
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show tables like 't1%';
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Tables_in_test (t1%)
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t1
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drop table t1;
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create temporary table T1(a int(11), b varchar(8));
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insert into T1 values (1, 'abc');
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select * from T1;
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a b
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1 abc
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alter table T1 add index (a);
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select * from T1;
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a b
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1 abc
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drop table T1;
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create database mysqltest_LC2;
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use mysqltest_LC2;
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create table myUC (i int);
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insert into myUC values (1),(2),(3);
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select * from myUC;
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i
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1
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2
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3
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use test;
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drop database mysqltest_LC2;
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create database mysqltest_LC2;
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use mysqltest_LC2;
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create table myUC (i int);
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select * from myUC;
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i
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use test;
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drop database mysqltest_LC2;
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create table t2aA (col1 int);
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create table t1Aa (col1 int);
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select t1Aa.col1 from t1aA,t2Aa where t1Aa.col1 = t2aA.col1;
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col1
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drop table t2aA, t1Aa;
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create database mysqltest_LC2;
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use mysqltest_LC2;
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create table myUC (i int);
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select TABLE_SCHEMA,TABLE_NAME FROM information_schema.TABLES
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where TABLE_SCHEMA ='mysqltest_LC2';
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TABLE_SCHEMA TABLE_NAME
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mysqltest_LC2 myUC
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use test;
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drop database mysqltest_LC2;
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# End of 5.1 tests
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#
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# Test for bug #44738 "fill_schema_table_from_frm() opens tables without
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# lowercasing table name". Due to not properly normalizing table names
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# in lower_case_table_names modes in this function queries to I_S which
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# were executed through it left entries with incorrect key in table
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# definition cache. As result further queries to I_S that used this
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# function produced stale results in cases when table definition was
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# changed by a DDL statement. Also combination of this issue and a
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# similar problem in CREATE TABLE (it also has peeked into table
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# definition cache using non-normalized key) led to spurious
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# ER_TABLE_EXISTS_ERROR errors when one tried to create table with the
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# same name as a previously existing but dropped table.
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#
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drop database if exists mysqltest_UPPERCASE;
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drop table if exists t_bug44738_UPPERCASE;
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create database mysqltest_UPPERCASE;
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use mysqltest_UPPERCASE;
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create table t_bug44738_UPPERCASE (i int) comment='Old comment';
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create table t_bug44738_lowercase (i int) comment='Old comment';
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select table_schema, table_name, table_comment from information_schema.tables
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where table_schema like 'mysqltest_%' and table_name like 't_bug44738_%'
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order by table_name;
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table_schema table_name table_comment
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mysqltest_UPPERCASE t_bug44738_lowercase Old comment
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mysqltest_UPPERCASE t_bug44738_UPPERCASE Old comment
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alter table t_bug44738_UPPERCASE comment='New comment';
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alter table t_bug44738_lowercase comment='New comment';
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# There should be no stale entries in TDC for our tables after the
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# above ALTER TABLE statements so new version of comments should be
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# returned by the below query to I_S.
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select table_schema, table_name, table_comment from information_schema.tables
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where table_schema like 'mysqltest_%' and table_name like 't_bug44738_%'
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order by table_name;
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table_schema table_name table_comment
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mysqltest_UPPERCASE t_bug44738_lowercase New comment
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mysqltest_UPPERCASE t_bug44738_UPPERCASE New comment
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drop database mysqltest_UPPERCASE;
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use test;
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# Let us check that the original test case which led to discovery
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# of this problem also works.
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create table t_bug44738_UPPERCASE (i int);
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select table_schema, table_name, table_comment from information_schema.tables
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where table_schema = 'test' and table_name like 't_bug44738_%';
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table_schema table_name table_comment
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test t_bug44738_UPPERCASE
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drop table t_bug44738_UPPERCASE;
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# After the above DROP TABLE there are no entries in TDC which correspond
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# to our table and therefore the below statement should succeed.
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create table t_bug44738_UPPERCASE (i int);
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drop table t_bug44738_UPPERCASE;
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# Finally, let us check that another issue which was exposed by
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# the original test case is solved. I.e. that the table is not
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# created if there is an entry for it in TDC even though it was
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# removed from disk.
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create table t_bug44738_UPPERCASE (i int) engine = myisam;
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# Load table definition in TDC.
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select table_schema, table_name, table_comment from information_schema.tables
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where table_schema = 'test' and table_name like 't_bug44738_%';
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table_schema table_name table_comment
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test t_bug44738_UPPERCASE
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# Simulate manual removal of the table.
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# Check that still there is an entry for table in TDC.
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show open tables like 't_bug44738_%';
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Database Table In_use Name_locked
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test t_bug44738_uppercase 0 0
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# So attempt to create table with the same name should fail.
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create table t_bug44738_UPPERCASE (i int);
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ERROR HY000: Can't find file: 't_bug44738_uppercase' (errno: 2)
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# And should succeed after FLUSH TABLES.
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flush tables;
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create table t_bug44738_UPPERCASE (i int);
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drop table t_bug44738_UPPERCASE;
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