database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

Setting a variable to CAST(NULL as X) set the result type of the variable to X. (Bug #6598)

Browse Source 
mysql-test/r/bigint.result:
  Test to show show that the parser threats big longlong values as unsigned
mysql-test/r/user_var.result:
  Test of CAST(NULL as SIGNED/UNSIGNED)
mysql-test/t/bigint.test:
  Test to show show that the parser threats big longlong values as unsigned
mysql-test/t/user_var.test:
  Test of CAST(NULL as SIGNED/UNSIGNED)
sql/item_func.cc:
  Setting a variable to CAST(NULL as X) set the result type of the variable to X. (Bug #6598)
  Setting a variable to NULL doesn't change the old result type.
sql/item_func.h:
  Detect setting a variable to NULL
sql/unireg.cc:
  Safety fix
This commit is contained in:
unknown
2005-04-30 03:14:42 +03:00
parent 8b5b3652ec
commit ac82a2d5eb
7 changed files with 111 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
mysql-test/r/bigint.result
View File

@ -128,3 +128,20 @@ t2.value64=t1.value64;
value64 value32 value64 value32
9223372036854775807 2 9223372036854775807 4
drop table t1, t2;
create table t1 select 1 as 'a';
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` bigint(1) NOT NULL default '0'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 select 9223372036854775809 as 'a';
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` bigint(19) unsigned NOT NULL default '0'
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from t1;
a
9223372036854775809
drop table t1;

41
mysql-test/r/user_var.result
View File

@ -182,3 +182,44 @@ coercibility(@v1) coercibility(@v2) coercibility(@v3) coercibility(@v4)
set session @honk=99;
set one_shot @honk=99;
ERROR HY000: The 'SET ONE_SHOT' syntax is reserved for purposes internal to the MySQL server
set @first_var= NULL;
create table t1 select @first_var;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`@first_var` longblob
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
set @first_var= cast(NULL as signed integer);
create table t1 select @first_var;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`@first_var` bigint(20) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
set @first_var= NULL;
create table t1 select @first_var;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`@first_var` bigint(20) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
set @first_var= concat(NULL);
create table t1 select @first_var;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`@first_var` longblob
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
set @first_var=1;
set @first_var= cast(NULL as CHAR);
create table t1 select @first_var;
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`@first_var` longtext
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;

10
mysql-test/t/bigint.test
View File

@ -104,3 +104,13 @@ t2.value64=t1.value64;
drop table t1, t2;
#
# Test of CREATE ... SELECT and unsigned integers
#
create table t1 select 1 as 'a';
show create table t1;
drop table t1;
create table t1 select 9223372036854775809 as 'a';
show create table t1;
select * from t1;
drop table t1;

26
mysql-test/t/user_var.test
View File

@ -119,3 +119,29 @@ select coercibility(@v1),coercibility(@v2),coercibility(@v3),coercibility(@v4);
set session @honk=99;
--error 1382
set one_shot @honk=99;
#
# Bug #6598: problem with cast(NULL as signed integer);
#
set @first_var= NULL;
create table t1 select @first_var;
show create table t1;
drop table t1;
set @first_var= cast(NULL as signed integer);
create table t1 select @first_var;
show create table t1;
drop table t1;
set @first_var= NULL;
create table t1 select @first_var;
show create table t1;
drop table t1;
set @first_var= concat(NULL);
create table t1 select @first_var;
show create table t1;
drop table t1;
set @first_var=1;
set @first_var= cast(NULL as CHAR);
create table t1 select @first_var;
show create table t1;
drop table t1;