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to auto_increment in 4.1". Now we are enforcing NO_AUTO_VALUE_ON_ZERO mode during ALTER TABLE only if we are converting one auto_increment column to another auto_increment column (this also includes most common case when we don't do anything with such column). Also now when we convert some column to TIMESTAMP NOT NULL column with ALTER TABLE we convert NULL values to current timestamp, (as we do this in INSERT). One can still get old behavior by setting system TIMESTAMP variable to 0. mysql-test/r/auto_increment.result: Added tests for ALTER TABLE converting columns containing NULL and 0 values to AUTO_INCREMENT columns. mysql-test/r/type_timestamp.result: Removed test for creation of TIMESTAMP(19) columns (it is 4.0 specific). Added test for ALTER TABLE converting columns containing NULL values to TIMESTAMP columns. mysql-test/t/auto_increment.test: Added tests for ALTER TABLE converting columns containing NULL and 0 values to AUTO_INCREMENT columns. mysql-test/t/type_timestamp.test: Removed test for creation of TIMESTAMP(19) columns (it is 4.0 specific). Added test for ALTER TABLE converting columns containing NULL values to TIMESTAMP columns. sql/field_conv.cc: Fix bug #5915 "ALTER TABLE behaves differently when converting column to auto_increment in 4.1". Also now when we are converting some column to TIMESTAMP column, we are converting NULL values to CURRENT_TIMESTAMP (as it was initially planned). do_copy_timestamp(): Fixed comment. do_copy_next_number(): We should also set auto_increment_field_not_null to FALSE if we have NULL in source field. Copy_field::set(): Moved setting of copy functions for TIMESTAMP and AUTO_INCREMENT fields to proper place (this was dead code before). sql/sql_table.cc: Fix for bug #5915 "ALTER TABLE behaves differently when converting column to auto_increment in 4.1". Instead of always forcing NO_AUTO_VALUE_ON_ZERO in ALTER TABLE it is better to do this only if we are converting one auto_increment column to another auto_increment column (this also includes most common case when we don't do anything with such column).
208 lines
6 KiB
Text
208 lines
6 KiB
Text
#
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# Test of auto_increment; The test for BDB tables is in bdb.test
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#
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--disable_warnings
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drop table if exists t1;
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drop table if exists t2;
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--enable_warnings
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SET SQL_WARNINGS=1;
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create table t1 (a int not null auto_increment,b int, primary key (a)) engine=myisam auto_increment=3;
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insert into t1 values (1,1),(NULL,3),(NULL,4);
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delete from t1 where a=4;
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insert into t1 values (NULL,5),(NULL,6);
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select * from t1;
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delete from t1 where a=6;
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#show table status like "t1";
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replace t1 values (3,1);
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ALTER TABLE t1 add c int;
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replace t1 values (3,3,3);
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insert into t1 values (NULL,7,7);
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update t1 set a=8,b=b+1,c=c+1 where a=7;
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insert into t1 values (NULL,9,9);
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select * from t1;
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drop table t1;
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create table t1 (
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skey tinyint unsigned NOT NULL auto_increment PRIMARY KEY,
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sval char(20)
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);
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insert into t1 values (NULL, "hello");
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insert into t1 values (NULL, "hey");
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select * from t1;
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select _rowid,t1._rowid,skey,sval from t1;
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drop table t1;
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#
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# Test auto_increment on sub key
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#
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create table t1 (a char(10) not null, b int not null auto_increment, primary key(a,b));
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insert into t1 values ("a",1),("b",2),("a",2),("c",1);
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insert into t1 values ("a",NULL),("b",NULL),("c",NULL),("e",NULL);
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insert into t1 (a) values ("a"),("b"),("c"),("d");
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insert into t1 (a) values ('k'),('d');
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insert into t1 (a) values ("a");
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insert into t1 values ("d",last_insert_id());
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select * from t1;
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drop table t1;
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create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ordid), index(ord,ordid));
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insert into t1 (ordid,ord) values (NULL,'sdj'),(NULL,'sdj');
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select * from t1;
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drop table t1;
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create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid));
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insert into t1 values (NULL,'sdj'),(NULL,'sdj'),(NULL,"abc"),(NULL,'abc'),(NULL,'zzz'),(NULL,'sdj'),(NULL,'abc');
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select * from t1;
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drop table t1;
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create table t1 (sid char(5), id int(2) NOT NULL auto_increment, key(sid, id));
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create table t2 (sid char(20), id int(2));
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insert into t2 values ('skr',NULL),('skr',NULL),('test',NULL);
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insert into t1 select * from t2;
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select * from t1;
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drop table t1,t2;
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#
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# Test of auto_increment columns when they are set to 0
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#
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create table t1 (a int not null primary key auto_increment);
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insert into t1 values (0);
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update t1 set a=0;
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select * from t1;
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check table t1;
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drop table t1;
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#
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# Test negative values (Bug #1366)
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#
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create table t1 (a int not null auto_increment primary key);
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insert into t1 values (NULL);
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insert into t1 values (-1);
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select last_insert_id();
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insert into t1 values (NULL);
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select * from t1;
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drop table t1;
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create table t1 (a int not null auto_increment primary key) /*!40102 engine=heap */;
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insert into t1 values (NULL);
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insert into t1 values (-1);
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select last_insert_id();
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insert into t1 values (NULL);
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select * from t1;
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drop table t1;
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#
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# last_insert_id() madness
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#
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create table t1 (i tinyint unsigned not null auto_increment primary key);
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insert into t1 set i = 254;
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insert into t1 set i = null;
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select last_insert_id();
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explain extended select last_insert_id();
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--error 1062
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insert into t1 set i = 254;
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select last_insert_id();
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--error 1062
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insert into t1 set i = null;
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select last_insert_id();
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drop table t1;
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create table t1 (i tinyint unsigned not null auto_increment, key (i));
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insert into t1 set i = 254;
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insert into t1 set i = null;
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select last_insert_id();
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insert into t1 set i = null;
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select last_insert_id();
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drop table t1;
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create table t1 (i tinyint unsigned not null auto_increment primary key, b int, unique (b));
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insert into t1 values (NULL, 10);
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select last_insert_id();
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insert into t1 values (NULL, 15);
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select last_insert_id();
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--error 1062
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insert into t1 values (NULL, 10);
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select last_insert_id();
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drop table t1;
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create table t1(a int auto_increment,b int null,primary key(a));
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SET SQL_MODE=NO_AUTO_VALUE_ON_ZERO;
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insert into t1(a,b)values(NULL,1);
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insert into t1(a,b)values(200,2);
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insert into t1(a,b)values(0,3);
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insert into t1(b)values(4);
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insert into t1(b)values(5);
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insert into t1(b)values(6);
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insert into t1(b)values(7);
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select * from t1 order by b;
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alter table t1 modify b mediumint;
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select * from t1 order by b;
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create table t2 (a int);
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insert t2 values (1),(2);
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alter table t2 add b int auto_increment primary key;
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select * from t2;
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drop table t2;
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delete from t1 where a=0;
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update t1 set a=0 where b=5;
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select * from t1 order by b;
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delete from t1 where a=0;
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update t1 set a=NULL where b=6;
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update t1 set a=300 where b=7;
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SET SQL_MODE='';
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insert into t1(a,b)values(NULL,8);
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insert into t1(a,b)values(400,9);
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insert into t1(a,b)values(0,10);
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insert into t1(b)values(11);
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insert into t1(b)values(12);
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insert into t1(b)values(13);
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insert into t1(b)values(14);
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select * from t1 order by b;
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delete from t1 where a=0;
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update t1 set a=0 where b=12;
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select * from t1 order by b;
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delete from t1 where a=0;
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update t1 set a=NULL where b=13;
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update t1 set a=500 where b=14;
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select * from t1 order by b;
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drop table t1;
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#
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# Test of behavior of ALTER TABLE when coulmn containing NULL or zeroes is
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# converted to AUTO_INCREMENT column
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#
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create table t1 (a bigint);
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insert into t1 values (1), (2), (3), (NULL), (NULL);
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alter table t1 modify a bigint not null auto_increment primary key;
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select * from t1;
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drop table t1;
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create table t1 (a bigint);
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insert into t1 values (1), (2), (3), (0), (0);
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alter table t1 modify a bigint not null auto_increment primary key;
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select * from t1;
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drop table t1;
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# We still should be able to preserve zero in NO_AUTO_VALUE_ON_ZERO mode
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create table t1 (a bigint);
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insert into t1 values (0), (1), (2), (3);
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set sql_mode=NO_AUTO_VALUE_ON_ZERO;
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alter table t1 modify a bigint not null auto_increment primary key;
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set sql_mode= '';
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select * from t1;
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drop table t1;
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# It also sensible to preserve zeroes if we are converting auto_increment
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# column to auto_increment column (or not touching it at all, which is more
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# common case probably)
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create table t1 (a int auto_increment primary key , b int null);
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set sql_mode=NO_AUTO_VALUE_ON_ZERO;
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insert into t1 values (0,1),(1,2),(2,3);
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select * from t1;
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set sql_mode= '';
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alter table t1 modify b varchar(255);
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insert into t1 values (0,4);
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select * from t1;
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drop table t1;
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