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Merge zippy.cornsilk.net:/home/cmiller/work/mysql/bug23411/my41-bug23411

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into  zippy.cornsilk.net:/home/cmiller/work/mysql/bug23411/my50-bug23411
This commit is contained in:
cmiller@zippy.cornsilk.net 2006-11-06 17:45:47 -05:00
commit 40170fbf58
4 changed files with 118 additions and 1 deletions
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2
BitKeeper/etc/collapsed
View File

@ -15,3 +15,5 @@
45214442pBGT9KuZEGixBH71jTzbOA
45214a07hVsIGwvwa-WrO-jpeaSwVw
452a92d0-31-8wSzSfZi165fcGcXPA
454a7ef8gdvE_ddMlJyghvOAkKPNOQ
454f8960jsVT_kMKJtZ9OCgXoba0xQ

74
mysql-test/r/func_test.result
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@ -182,6 +182,80 @@ select 5.1 mod 3, 5.1 mod -3, -5.1 mod 3, -5.1 mod -3;
select 5 mod 3, 5 mod -3, -5 mod 3, -5 mod -3;
5 mod 3 5 mod -3 -5 mod 3 -5 mod -3
2 2 -2 -2
select (12%0) <=> null as '1';
1
1
select (12%0) is null as '1';
1
1
select 12%0 as 'NULL';
NULL
NULL
select 12%2 as '0';
0
0
select 12%NULL as 'NULL';
NULL
NULL
select 12 % null as 'NULL';
NULL
NULL
select null % 12 as 'NULL';
NULL
NULL
select null % 0 as 'NULL';
NULL
NULL
select 0 % null as 'NULL';
NULL
NULL
select null % null as 'NULL';
NULL
NULL
select (12 mod 0) <=> null as '1';
1
1
select (12 mod 0) is null as '1';
1
1
select 12 mod 0 as 'NULL';
NULL
NULL
select 12 mod 2 as '0';
0
0
select 12 mod null as 'NULL';
NULL
NULL
select null mod 12 as 'NULL';
NULL
NULL
select null mod 0 as 'NULL';
NULL
NULL
select 0 mod null as 'NULL';
NULL
NULL
select null mod null as 'NULL';
NULL
NULL
select mod(12.0, 0) as 'NULL';
NULL
NULL
select mod(12, 0.0) as 'NULL';
NULL
NULL
select mod(12, NULL) as 'NULL';
NULL
NULL
select mod(12.0, NULL) as 'NULL';
NULL
NULL
select mod(NULL, 2) as 'NULL';
NULL
NULL
select mod(NULL, 2.0) as 'NULL';
NULL
create table t1 (a int, b int);
insert into t1 values (1,2), (2,3), (3,4), (4,5);
select * from t1 where a not between 1 and 2;

34
mysql-test/t/func_test.test
View File

@ -108,6 +108,40 @@ select 5.1 mod 3, 5.1 mod -3, -5.1 mod 3, -5.1 mod -3;
select 5 mod 3, 5 mod -3, -5 mod 3, -5 mod -3;
#
# Bug#23411: The "%" (MOD) operator is not documented; MOD-ing zero returns strange result
# Manual: "Division by zero produces a NULL result"
#
select (12%0) <=> null as '1';
select (12%0) is null as '1';
select 12%0 as 'NULL';
select 12%2 as '0';
select 12%NULL as 'NULL';
select 12 % null as 'NULL';
select null % 12 as 'NULL';
select null % 0 as 'NULL';
select 0 % null as 'NULL';
select null % null as 'NULL';
select (12 mod 0) <=> null as '1';
select (12 mod 0) is null as '1';
select 12 mod 0 as 'NULL';
select 12 mod 2 as '0';
select 12 mod null as 'NULL';
select null mod 12 as 'NULL';
select null mod 0 as 'NULL';
select 0 mod null as 'NULL';
select null mod null as 'NULL';
select mod(12.0, 0) as 'NULL';
select mod(12, 0.0) as 'NULL';
select mod(12, NULL) as 'NULL';
select mod(12.0, NULL) as 'NULL';
select mod(NULL, 2) as 'NULL';
select mod(NULL, 2.0) as 'NULL';
#
# Bug#6726: NOT BETWEEN parse failure
#
create table t1 (a int, b int);

9
sql/item_func.cc
View File

@ -105,7 +105,7 @@ Item_func::Item_func(THD *thd, Item_func *item)
/*
Resolve references to table column for a function and it's argument
Resolve references to table column for a function and its argument
SYNOPSIS:
fix_fields()
@ -1377,6 +1377,13 @@ void Item_func_mod::result_precision()
}
void Item_func_mod::fix_length_and_dec()
{
Item_num_op::fix_length_and_dec();
maybe_null= 1;
}
double Item_func_neg::real_op()
{
double value= args[0]->val_real();