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# Bug #958 a big table without indices and select with group by doesnt work
# this is a test for error 1032 in count(distinct) + group by, introduced in
# mysql-4.1
#
--source include/big_test.inc
--disable_warnings
DROP TABLE IF EXISTS t1, t2;
--enable_warnings
CREATE TABLE t1 (id INTEGER, grp TINYINT, id_rev INTEGER);
--disable_query_log
SET @rnd_max= 2147483647;
let $1 = 1000;
while ($1)
{
SET @rnd= RAND();
SET @id = CAST(@rnd * @rnd_max AS UNSIGNED);
SET @id_rev= @rnd_max - @id;
SET @grp= CAST(127.0 * @rnd AS UNSIGNED);
INSERT INTO t1 (id, grp, id_rev) VALUES (@id, @grp, @id_rev);
dec $1;
}
# We increase the size of t1 here.
SET @orig_myisam_sort_buffer_size = @@session.myisam_sort_buffer_size;
SET session myisam_sort_buffer_size=20000000;
INSERT INTO t1
SELECT A.id, A.grp, A.id_rev
FROM
t1 A,
(SELECT * FROM t1 B LIMIT 100) B,
(SELECT * FROM t1 Z LIMIT 42) Z;
--enable_query_log
SELECT COUNT(*) FROM t1;
# As t1 contains random numbers, results are different from test to test.
# That's okay, because we test only that select doesn't yield an
# error. Note, that --disable_result_log doesn't suppress error output.
--disable_result_log
SELECT COUNT(DISTINCT id) FROM t1 GROUP BY grp;
--enable_result_log
--echo # Begin cleanup
SET session myisam_sort_buffer_size = @orig_myisam_sort_buffer_size;
DROP TABLE t1;
# End of 4.1 tests
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