-- source include/have_debug.inc

#
# Bug #28499: crash for grouping query when tmp_table_size is too small
#

DROP TABLE IF EXISTS t1;

CREATE TABLE t1 (
  a varchar(32) character set utf8 collate utf8_bin NOT NULL,
  b varchar(32) character set utf8 collate utf8_bin NOT NULL )
ENGINE=MyISAM DEFAULT CHARSET=utf8;

INSERT INTO t1 VALUES
  ('AAAAAAAAAA','AAAAAAAAAA'), ('AAAAAAAAAB','AAAAAAAAAB '),
  ('AAAAAAAAAB','AAAAAAAAAB'), ('AAAAAAAAAC','AAAAAAAAAC'),
  ('AAAAAAAAAD','AAAAAAAAAD'), ('AAAAAAAAAE','AAAAAAAAAE'),
  ('AAAAAAAAAF','AAAAAAAAAF'), ('AAAAAAAAAG','AAAAAAAAAG'),
  ('AAAAAAAAAH','AAAAAAAAAH'), ('AAAAAAAAAI','AAAAAAAAAI'),
  ('AAAAAAAAAJ','AAAAAAAAAJ'), ('AAAAAAAAAK','AAAAAAAAAK');

set tmp_table_size=1024;

# Set debug flag so an error is returned when
# tmp table in query is converted from heap to myisam
set session debug="d,raise_error";

--replace_regex /in table '[^']+'/in table 'tmp_table'/
--error ER_DUP_KEY
SELECT MAX(a) FROM t1 GROUP BY a,b;

set tmp_table_size=default;
DROP TABLE t1;


--echo #
--echo # Bug #50946: fast index creation still seems to copy the table
--echo #
CREATE TABLE t1 (a INT(100) NOT NULL);
INSERT INTO t1 VALUES (1), (0), (2);
SET SESSION debug='+d,alter_table_only_index_change';
ALTER TABLE t1 ADD INDEX a(a);
SET SESSION debug=DEFAULT;
SHOW CREATE TABLE t1;
SELECT * FROM t1;
DROP TABLE t1;

--echo #
--echo # Bug#42064: low memory crash when importing hex strings, in Item_hex_string::Item_hex_string
--echo #

CREATE TABLE t1(a BLOB);

SET SESSION debug="+d,bug42064_simulate_oom";
# May fail with either ER_OUT_OF_RESOURCES or EE_OUTOFMEMORY
--error ER_OUT_OF_RESOURCES, 5
INSERT INTO t1 VALUES("");
SET SESSION debug=DEFAULT;

DROP TABLE t1;

-- echo #
-- echo # Bug#41660: Sort-index_merge for non-first join table may require 
-- echo # O(#scans) memory
-- echo #

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (0), (1), (2), (3), (4), (5), (6), (7), (8), (9);

CREATE TABLE t2 (a INT, b INT, filler CHAR(100), KEY(a), KEY(b));
INSERT INTO t2 SELECT 1000, 1000, 'filler' FROM t1 A, t1 B, t1 C;
INSERT INTO t2 VALUES (1, 1, 'data');

--echo # the example query uses LEFT JOIN only for the sake of being able to
--echo # demonstrate the issue with a very small dataset. (left outer join 
--echo # disables the use of join buffering, so we get the second table 
--echo # re-scanned for every record in the outer table. if we used inner join,
--echo # we would need to have thousands of records and/or more columns in both
--echo # tables so that the join buffer is filled and re-scans are triggered).

SET SESSION debug = '+d,only_one_Unique_may_be_created';

--replace_column 1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 x
EXPLAIN
SELECT * FROM t1 LEFT JOIN t2 ON ( t2.a < 10 OR t2.b < 10 );
SELECT * FROM t1 LEFT JOIN t2 ON ( t2.a < 10 OR t2.b < 10 );

SET SESSION debug = DEFAULT;

DROP TABLE t1, t2;

--echo #
--echo # End of 5.1 tests
--echo #
