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|
set global max_allowed_packet=1048576;
connect conn1,localhost,root,,;
connection conn1;
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`)) = octet_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 text, b char(255), c char(4)) engine=myisam;
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 text);
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:
Warning 1259 ZLIB: Input data corrupted
Warning 1256 Uncompressed data size too large; the maximum size is 1048576 (probably, length of uncompressed data was corrupted)
drop table t1;
set @@global.max_allowed_packet=1048576*100;
connect newconn, localhost, root,,;
select compress(repeat('aaaaaaaaaa', IF(XXX, 10, 10000000))) is null;
compress(repeat('aaaaaaaaaa', IF(XXX, 10, 10000000))) is null
0
Warnings:
Warning 1292 Truncated incorrect DOUBLE value: XXX
Warning 1292 Truncated incorrect DOUBLE value: XXX
disconnect newconn;
connection default;
set @@global.max_allowed_packet=default;
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 system NULL NULL NULL NULL 1
Warnings:
Warning 1259 ZLIB: Input data corrupted
select * from t1 where uncompress(a) is null;
a
foo
Warnings:
Warning 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 system NULL NULL NULL NULL 1
select *, uncompress(a) from t1;
a uncompress(a)
foo NULL
Warnings:
Warning 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:
Warning 1259 ZLIB: Input data corrupted
Warning 1259 ZLIB: Input data corrupted
drop table t1;
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1), (1111), (11111);
SELECT UNCOMPRESS(c1), UNCOMPRESSED_LENGTH(c1) FROM t1;
UNCOMPRESS(c1) UNCOMPRESSED_LENGTH(c1)
NULL NULL
NULL NULL
NULL 825307441
EXPLAIN EXTENDED SELECT * FROM (SELECT UNCOMPRESSED_LENGTH(c1) FROM t1) AS s;
DROP TABLE t1;
End of 5.0 tests
#
# Start of 5.3 tests
#
#
# MDEV-5783 Assertion `0' failed in make_sortkey(SORTPARAM*, uchar*, uchar*) on ORDER BY HEX(UNCOMPRESSED_LENGTH(pk))
#
CREATE TABLE t1 (pk INT PRIMARY KEY);
INSERT INTO t1 VALUES (1),(2);
SELECT UNCOMPRESSED_LENGTH(pk) FROM t1;
UNCOMPRESSED_LENGTH(pk)
NULL
NULL
Warnings:
Warning 1259 ZLIB: Input data corrupted
Warning 1259 ZLIB: Input data corrupted
SELECT * FROM t1 ORDER BY HEX(UNCOMPRESSED_LENGTH(pk));
DROP TABLE t1;
#
# End of 5.3 tests
#
SELECT UNCOMPRESS(CAST(0 AS BINARY(5)));
UNCOMPRESS(CAST(0 AS BINARY(5)))
NULL
Warnings:
Warning 1259 ZLIB: Input data corrupted
disconnect conn1;
connection default;
set global max_allowed_packet=default;
#
# End of 5.5 tests
#
#
# Start of 10.1 tests
#
#
# MDEV-10864 Wrong result for WHERE .. (f2=COMPRESS('test') OR f2=COMPRESS('TEST'))
#
CREATE TABLE t1 (f1 VARCHAR(4), f2 VARCHAR(64), UNIQUE KEY k1 (f1,f2));
INSERT INTO t1 VALUES ('test',compress('test')), ('TEST', compress('TEST'));
SELECT f1,HEX(f2) FROM t1 ignore index(k1) WHERE f1='test' AND (f2= compress("test") OR f2= compress("TEST"));
f1 HEX(f2)
test 04000000789C2B492D2E0100045D01C1
TEST 04000000789C0B710D0E0100031D0141
SELECT f1,HEX(f2) FROM t1 WHERE f1='test' AND (f2= compress("test") OR f2= compress("TEST"));
f1 HEX(f2)
TEST 04000000789C0B710D0E0100031D0141
test 04000000789C2B492D2E0100045D01C1
SELECT f1,HEX(f2) FROM t1 WHERE f1='test' AND (f2= compress("TEST") OR f2= compress("test"));
f1 HEX(f2)
TEST 04000000789C0B710D0E0100031D0141
test 04000000789C2B492D2E0100045D01C1
DROP TABLE t1;
#
# End of 10.1 tests
#
#
# Start of 10.2 tests
#
#
# MDEV-10134 Add full support for DEFAULT
#
CREATE TABLE t1 (a TEXT, b BLOB DEFAULT COMPRESS(a), bl INT DEFAULT UNCOMPRESSED_LENGTH(b), a1 TEXT DEFAULT UNCOMPRESS(b));
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` text DEFAULT NULL,
`b` blob DEFAULT compress(`a`),
`bl` int(11) DEFAULT uncompressed_length(`b`),
`a1` text DEFAULT uncompress(`b`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
INSERT INTO t1 (a) VALUES (REPEAT('a',100));
SELECT bl, a1 FROM t1;
bl a1
100 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
DROP TABLE t1;
#
# End of 10.2 tests
#
|
