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Fix bug in handling of decimal fields in UNION statements that could

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cause a crash or write to an incorrect memory location. (Bug #14216)


mysql-test/r/union.result:
  Update results
mysql-test/t/union.test:
  Add regression test
sql/item.cc:
  Set max_length for decimal fields correctly
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unknown
2005-10-28 18:12:57 -07:00
parent 5a9dc44dac
commit 42155a35d1
3 changed files with 49 additions and 2 deletions
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26
mysql-test/r/union.result
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@ -1253,3 +1253,29 @@ id
5
99
drop table t1;
create table t1 (f1 decimal(60,25), f2 decimal(60,25));
insert into t1 values (0.0,0.0);
select f1 from t1 union all select f2 from t1;
f1
0.0000000000000000000000000
0.0000000000000000000000000
select 'XXXXXXXXXXXXXXXXXXXX' as description, f1 from t1
union all
select 'YYYYYYYYYYYYYYYYYYYY' as description, f2 from t1;
description f1
XXXXXXXXXXXXXXXXXXXX 0.0000000000000000000000000
YYYYYYYYYYYYYYYYYYYY 0.0000000000000000000000000
drop table t1;
create table t1 (f1 decimal(60,24), f2 decimal(60,24));
insert into t1 values (0.0,0.0);
select f1 from t1 union all select f2 from t1;
f1
0.000000000000000000000000
0.000000000000000000000000
select 'XXXXXXXXXXXXXXXXXXXX' as description, f1 from t1
union all
select 'YYYYYYYYYYYYYYYYYYYY' as description, f2 from t1;
description f1
XXXXXXXXXXXXXXXXXXXX 0.000000000000000000000000
YYYYYYYYYYYYYYYYYYYY 0.000000000000000000000000
drop table t1;