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

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into  production.mysql.com:/usersnfs/rkalimullin/4.1.b18643
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2006-04-21 13:56:40 +02:00
parent 5f3c91080c 5c87b55f7e
commit 04be401f96
3 changed files with 17 additions and 0 deletions
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7
mysql-test/r/func_compress.result
View File

@ -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;

9
mysql-test/t/func_compress.test
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@ -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

1
sql/item_strfunc.cc
View File

@ -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;