Commit aed861fd authored by ramil@production.mysql.com's avatar ramil@production.mysql.com

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

into  production.mysql.com:/usersnfs/rkalimullin/4.1.b18643
parents 5109b3ce 23988820
...@@ -72,3 +72,10 @@ set @@max_allowed_packet=1048576*100; ...@@ -72,3 +72,10 @@ set @@max_allowed_packet=1048576*100;
select compress(repeat('aaaaaaaaaa', IF(XXX, 10, 10000000))) is null; select compress(repeat('aaaaaaaaaa', IF(XXX, 10, 10000000))) is null;
compress(repeat('aaaaaaaaaa', IF(XXX, 10, 10000000))) is null compress(repeat('aaaaaaaaaa', IF(XXX, 10, 10000000))) is null
0 0
create table t1(a blob);
insert into t1 values(NULL), (compress('a'));
select uncompress(a), uncompressed_length(a) from t1;
uncompress(a) uncompressed_length(a)
NULL NULL
a 1
drop table t1;
...@@ -45,4 +45,13 @@ set @@max_allowed_packet=1048576*100; ...@@ -45,4 +45,13 @@ set @@max_allowed_packet=1048576*100;
--replace_result "''" XXX "'1'" XXX --replace_result "''" XXX "'1'" XXX
eval select compress(repeat('aaaaaaaaaa', IF('$LOW_MEMORY', 10, 10000000))) is null; eval select compress(repeat('aaaaaaaaaa', IF('$LOW_MEMORY', 10, 10000000))) is null;
#
# Bug #18643: problem with null values
#
create table t1(a blob);
insert into t1 values(NULL), (compress('a'));
select uncompress(a), uncompressed_length(a) from t1;
drop table t1;
# End of 4.1 tests # End of 4.1 tests
...@@ -2850,6 +2850,7 @@ String *Item_func_uncompress::val_str(String *str) ...@@ -2850,6 +2850,7 @@ String *Item_func_uncompress::val_str(String *str)
if (!res) if (!res)
goto err; goto err;
null_value= 0;
if (res->is_empty()) if (res->is_empty())
return res; return res;
......
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