~drizzle-trunk/drizzle/development

#-- source include/have_compress.inc

#

# Test for compress and uncompress functions:

#

# Note that this test gives error in the gzip library when running under

# valgrind, but these warnings can be ignored

select @test_compress_string:='string for test compress function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ';

select length(@test_compress_string);

select uncompress(compress(@test_compress_string));

explain extended select uncompress(compress(@test_compress_string));

select uncompressed_length(compress(@test_compress_string))=length(@test_compress_string);

explain extended select uncompressed_length(compress(@test_compress_string))=length(@test_compress_string);

select uncompressed_length(compress(@test_compress_string));

select length(compress(@test_compress_string))<length(@test_compress_string);

create table t1 (a blob, b blob, c varchar(4));

insert into t1 (a,b,c) values (compress(@test_compress_string),compress(@test_compress_string),'d ');

select uncompress(a) from t1;

select uncompress(b) from t1;

select concat('|',c,'|') from t1;

drop table t1;

select compress("");

select uncompress("");

select uncompress(compress(""));

select uncompressed_length("");

#

# errors

#

create table t1 (a blob);

insert t1 values (compress(null)), ('A\0\0\0BBBBBBBB'), (compress(space(50000))), (space(50000));

select length(a) from t1;

select length(uncompress(a)) from t1;

drop table t1;

#

# Bug #5497: a problem with large strings

# note that when LOW_MEMORY is set the "test" below is meaningless

#

set @@max_allowed_packet=1048576*100;

--replace_result "''" XXX "'1'" XXX

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;

#

# 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

#

# Bug #18539: uncompress(d) is null: impossible?

#

create table t1 (a varchar(32) not null);

insert into t1 values ('foo');

explain select * from t1 where uncompress(a) is null;

select * from t1 where uncompress(a) is null;

explain select *, uncompress(a) from t1;

select *, uncompress(a) from t1;

select *, uncompress(a), uncompress(a) is null from t1;

drop table t1;

--echo End of 5.0 tests

# parameter count

--error ER_WRONG_PARAMCOUNT_TO_FUNCTION

select compress();

--error ER_WRONG_PARAMCOUNT_TO_FUNCTION

select uncompress();

--error ER_WRONG_PARAMCOUNT_TO_FUNCTION

select uncompressed_length();

--error ER_WRONG_PARAMCOUNT_TO_FUNCTION

select compress('aeou', 'aoeu', 'aoeu');

--error ER_WRONG_PARAMCOUNT_TO_FUNCTION

select uncompress('aoenuthn', 'aoeu');

--error ER_WRONG_PARAMCOUNT_TO_FUNCTION

select uncompressed_length('aneohusa','naohuntah','onh');