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Merge rkalimullin@bk-internal.mysql.com:/home/bk/mysql-4.1-maint

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into  mysql.com:/usr/home/ram/work/bug23254/my41-bug23254
This commit is contained in:
unknown 2006-10-13 21:12:07 +05:00
commit e767ab6df8
3 changed files with 24 additions and 1 deletions
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10
mysql-test/r/func_compress.result
View File

@ -79,3 +79,13 @@ uncompress(a) uncompressed_length(a)
NULL NULL NULL NULL
a 1 a 1
drop table t1; drop table t1;
create table t1(a blob);
insert into t1 values ('0'), (NULL), ('0');
select compress(a), compress(a) from t1;
select compress(a) is null from t1;
compress(a) is null
0
1
0
drop table t1;
End of 4.1 tests

14
mysql-test/t/func_compress.test
View File

@ -54,4 +54,16 @@ insert into t1 values(NULL), (compress('a'));
select uncompress(a), uncompressed_length(a) from t1; select uncompress(a), uncompressed_length(a) from t1;
drop table t1; drop table t1;
# End of 4.1 tests #
# Bug #23254: problem with compress(NULL)
#
create table t1(a blob);
insert into t1 values ('0'), (NULL), ('0');
--disable_result_log
select compress(a), compress(a) from t1;
--enable_result_log
select compress(a) is null from t1;
drop table t1;
--echo End of 4.1 tests

1
sql/item_strfunc.cc
View File

@ -2838,6 +2838,7 @@ String *Item_func_compress::val_str(String *str)
null_value= 1; null_value= 1;
return 0; return 0;
} }
null_value= 0;
if (res->is_empty()) return res; if (res->is_empty()) return res;
/* /*