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