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52 lines
1.1 KiB
Text
52 lines
1.1 KiB
Text
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#
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# Tests related to pack modes of the sortkey and addon fields.
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# Fields can be either packed or fixed length.
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#
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# See the comment in filesort.cc:
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#
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# Heuristic: skip packing if potential savings are less than 10 bytes.
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#
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--echo #
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--echo # Start of 10.5 tests
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--echo #
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--echo #
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--echo # MDEV-27307 main.ctype_utf8mb4_uca_allkeys tests fail with Valgrind/MSAN
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--echo #
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--echo # In this scenario packing is fully disabled:
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--echo # - The sortkey is of a fixed width data type
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--echo # - The addon fields have too small potential savings
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SET NAMES latin1;
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CREATE TABLE t1 (
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code INT NOT NULL,
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str VARCHAR(5) CHARACTER SET latin1 NOT NULL
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) ENGINE=MyISAM;
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DELIMITER $$;
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FOR i IN 0..50
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DO
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INSERT INTO t1 VALUES (i, REPEAT('a',1));
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END FOR;
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$$
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DELIMITER ;$$
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SELECT COUNT(*) FROM t1;
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# The result is not very interesting, let's suppress it.
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# We just make sure there are no Valgrind/MSAN warnings about
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# not initialized memory being written to disk.
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SET sort_buffer_size=1024;
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--disable_result_log
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SELECT HEX(code), HEX(str) FROM t1 ORDER BY HEX(str);
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--enable_result_log
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SET sort_buffer_size=DEFAULT;
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DROP TABLE t1;
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--echo #
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--echo # End of 10.5 tests
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--echo #
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