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

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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
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17
mysql-test/r/bigint.result
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@ -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;