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This commit is contained in:
Alexey Botchkov
2008-11-17 19:43:10 +04:00
parent 9be8ab541c 88a8863627
commit ed77f02a92
3 changed files with 29 additions and 2 deletions
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15
mysql-test/r/type_newdecimal.result
View File

@ -1534,6 +1534,21 @@ select (1.20396873 * 0.89550000 * 0.68000000 * 1.08721696 * 0.99500000 *
(1.20396873 * 0.89550000 * 0.68000000 * 1.08721696 * 0.99500000 *
1.01500000 * 1.01500000 * 0.99500000)
0.812988073953673124592306939480
create table t1 as select 5.05 / 0.014;
Warnings:
Note 1265 Data truncated for column '5.05 / 0.014' at row 1
show warnings;
Level Code Message
Note 1265 Data truncated for column '5.05 / 0.014' at row 1
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`5.05 / 0.014` decimal(10,6) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
select * from t1;
5.05 / 0.014
360.714286
DROP TABLE t1;
End of 5.0 tests
select cast(143.481 as decimal(4,1));
cast(143.481 as decimal(4,1))

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

@ -1235,6 +1235,16 @@ DROP TABLE t1;
select (1.20396873 * 0.89550000 * 0.68000000 * 1.08721696 * 0.99500000 *
1.01500000 * 1.01500000 * 0.99500000);
#
# Bug #31616 div_precision_increment description looks wrong
#
create table t1 as select 5.05 / 0.014;
show warnings;
show create table t1;
select * from t1;
DROP TABLE t1;
--echo End of 5.0 tests
#

6
sql/item_func.cc
View File

@ -1301,8 +1301,10 @@ my_decimal *Item_func_div::decimal_op(my_decimal *decimal_value)
void Item_func_div::result_precision()
{
uint arg_prec= args[0]->decimal_precision() + prec_increment;
uint precision=min(arg_prec, DECIMAL_MAX_PRECISION);
uint precision=min(args[0]->decimal_precision() +
args[1]->decimals + prec_increment,
DECIMAL_MAX_PRECISION);
/* Integer operations keep unsigned_flag if one of arguments is unsigned */
if (result_type() == INT_RESULT)
unsigned_flag= args[0]->unsigned_flag | args[1]->unsigned_flag;