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Bug #7498 User variable SET saves SIGNED BIGINT as UNSIGNED BIGINT

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- Add unsigned flag to user_var_entry, used when 'type' is INT_RESULT
- Propagate unsigned flag from the query executed by Item_single_row_subselect


mysql-test/r/user_var.result:
  Update test results
mysql-test/t/user_var.test:
  Add test case
sql/item_func.cc:
  Add unsigned_flag to user_var_entry. Used when 'type' is INT_RESULT
  Pass unsigned_flag to 'update_hash' if type is INT_RESULT
sql/item_func.h:
  Removed unused variable save_buff
  Add parameter unsigned_arg to 'update_hash'
sql/item_subselect.cc:
  Propagate unsigned_flag to Item_singlerow_subselect from the items in the select to the cached items.
sql/sql_class.h:
  Add unsigned_flag to user_var_entry. Used when 'type' is INT_RESULT
This commit is contained in:
unknown
2006-06-09 19:35:54 +02:00
parent 889e60dae8
commit f067dfe1c6
6 changed files with 88 additions and 11 deletions
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36
mysql-test/r/user_var.result
View File

@ -256,3 +256,39 @@ t1 CREATE TABLE `t1` (
`@first_var` longtext
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
set @a=18446744071710965857;
select @a;
@a
18446744071710965857
CREATE TABLE `bigfailure` (
`afield` BIGINT UNSIGNED NOT NULL
);
INSERT INTO `bigfailure` VALUES (18446744071710965857);
SELECT * FROM bigfailure;
afield
18446744071710965857
select * from (SELECT afield FROM bigfailure) as b;
afield
18446744071710965857
select * from bigfailure where afield = (SELECT afield FROM bigfailure);
afield
18446744071710965857
select * from bigfailure where afield = 18446744071710965857;
afield
18446744071710965857
select * from bigfailure where afield = 18446744071710965856+1;
afield
18446744071710965857
SET @a := (SELECT afield FROM bigfailure);
SELECT @a;
@a
18446744071710965857
SET @a := (select afield from (SELECT afield FROM bigfailure) as b);
SELECT @a;
@a
18446744071710965857
SET @a := (select * from bigfailure where afield = (SELECT afield FROM bigfailure));
SELECT @a;
@a
18446744071710965857
drop table bigfailure;

31
mysql-test/t/user_var.test
View File

@ -171,3 +171,34 @@ set @first_var= cast(NULL as CHAR);
create table t1 select @first_var;
show create table t1;
drop table t1;
#
# Bug #7498 User variable SET saves SIGNED BIGINT as UNSIGNED BIGINT
#
# First part, set user var to large number and select it
set @a=18446744071710965857;
select @a;
# Second part, set user var from large number in table
# then select it
CREATE TABLE `bigfailure` (
`afield` BIGINT UNSIGNED NOT NULL
);
INSERT INTO `bigfailure` VALUES (18446744071710965857);
SELECT * FROM bigfailure;
select * from (SELECT afield FROM bigfailure) as b;
select * from bigfailure where afield = (SELECT afield FROM bigfailure);
select * from bigfailure where afield = 18446744071710965857;
# This is fixed in 5.0, to be uncommented there
#select * from bigfailure where afield = '18446744071710965857';
select * from bigfailure where afield = 18446744071710965856+1;
SET @a := (SELECT afield FROM bigfailure);
SELECT @a;
SET @a := (select afield from (SELECT afield FROM bigfailure) as b);
SELECT @a;
SET @a := (select * from bigfailure where afield = (SELECT afield FROM bigfailure));
SELECT @a;
drop table bigfailure;