~drizzle-trunk/drizzle/development

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

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

string for test compress function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 

select length(@test_compress_string);

length(@test_compress_string)

117

select uncompress(compress(@test_compress_string));

uncompress(compress(@test_compress_string))

string for test compress function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 

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

id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used

Warnings:

Note	1003	select uncompress(compress((@test_compress_string))) AS `uncompress(compress(@test_compress_string))`

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

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

1

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

id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used

Warnings:

Note	1003	select (uncompressed_length(compress((@test_compress_string))) = length((@test_compress_string))) AS `uncompressed_length(compress(@test_compress_string))=length(@test_compress_string)`

select uncompressed_length(compress(@test_compress_string));

uncompressed_length(compress(@test_compress_string))

117

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

length(compress(@test_compress_string))<length(@test_compress_string)

1

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;

uncompress(a)

string for test compress function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 

select uncompress(b) from t1;

uncompress(b)

string for test compress function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 

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

concat('|',c,'|')

|d |

drop table t1;

select compress("");

compress("")

select uncompress("");

uncompress("")

select uncompress(compress(""));

uncompress(compress(""))

select uncompressed_length("");

uncompressed_length("")

0

create table t1 (a blob);

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

select length(a) from t1;

length(a)

NULL

12

76

50000

select length(uncompress(a)) from t1;

length(uncompress(a))

NULL

NULL

50000

NULL

Warnings:

Error	1259	ZLIB: Input data corrupted

Error	1256	Uncompressed data size too large; the maximum size is 1048576 (probably, length of uncompressed data was corrupted)

drop table t1;

set @@max_allowed_packet=1048576*100;

select compress(repeat('aaaaaaaaaa', IF(XXX, 10, 10000000))) is null;

compress(repeat('aaaaaaaaaa', IF(XXX, 10, 10000000))) is null

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;

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

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

insert into t1 values ('foo');

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

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	1	Using where

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

a

foo

Warnings:

Error	1259	ZLIB: Input data corrupted

explain select *, uncompress(a) from t1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	1	

select *, uncompress(a) from t1;

a	uncompress(a)

foo	NULL

Warnings:

Error	1259	ZLIB: Input data corrupted

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

a	uncompress(a)	uncompress(a) is null 

foo	NULL	1

Warnings:

Error	1259	ZLIB: Input data corrupted

Error	1259	ZLIB: Input data corrupted

drop table t1;

End of 5.0 tests

select compress();

ERROR 42000: Incorrect parameters in the call to native function 'compress'

select uncompress();

ERROR 42000: Incorrect parameters in the call to native function 'uncompress'

select uncompressed_length();

ERROR 42000: Incorrect parameters in the call to native function 'uncompressed_length'

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

ERROR 42000: Incorrect parameters in the call to native function 'compress'

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

ERROR 42000: Incorrect parameters in the call to native function 'uncompress'

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

ERROR 42000: Incorrect parameters in the call to native function 'uncompressed_length'