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Don't ORDER BY in the nibble sql.

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This commit is contained in:
Daniel Nichter
2011-12-19 14:25:48 -07:00
parent 5d2e60791c
commit d3b074b14e
3 changed files with 4 additions and 4 deletions
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4
bin/pt-table-checksum
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@@ -3604,7 +3604,7 @@ sub new {
. " WHERE " . $asc->{boundaries}->{'>='} # lower boundary
. " AND " . $asc->{boundaries}->{'<='} # upper boundary
. ($where ? " AND ($where)" : '')
. " ORDER BY $order_by"
. ($args{order_by} ? " ORDER BY $order_by" : "")
. " /*checksum chunk*/";
MKDEBUG && _d('Nibble statement:', $nibble_sql);
@@ -3616,7 +3616,7 @@ sub new {
. " WHERE " . $asc->{boundaries}->{'>='} # lower boundary
. " AND " . $asc->{boundaries}->{'<='} # upper boundary
. ($where ? " AND ($where)" : '')
. " ORDER BY $order_by"
. ($args{order_by} ? " ORDER BY $order_by" : "")
. " /*explain checksum chunk*/";
MKDEBUG && _d('Explain nibble statement:', $explain_nibble_sql);

2
t/pt-table-checksum/samples/char-chunk-ascii-explain.txt
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@@ -2,7 +2,7 @@
-- test.ascii
--
REPLACE INTO `percona`.`checksums` (db, tbl, chunk, chunk_index, lower_boundary, upper_boundary, this_cnt, this_crc) SELECT ?, ?, ?, ?, ?, ?, COUNT(*) AS cnt, COALESCE(LOWER(CONV(BIT_XOR(CAST(CRC32(CONCAT_WS('#', `i`, `c`)) AS UNSIGNED)), 10, 16)), 0) AS crc FROM `test`.`ascii` FORCE INDEX(`c`) WHERE ((`c` >= ?)) AND ((`c` <= ?)) ORDER BY `c` /*checksum chunk*/
REPLACE INTO `percona`.`checksums` (db, tbl, chunk, chunk_index, lower_boundary, upper_boundary, this_cnt, this_crc) SELECT ?, ?, ?, ?, ?, ?, COUNT(*) AS cnt, COALESCE(LOWER(CONV(BIT_XOR(CAST(CRC32(CONCAT_WS('#', `i`, `c`)) AS UNSIGNED)), 10, 16)), 0) AS crc FROM `test`.`ascii` FORCE INDEX(`c`) WHERE ((`c` >= ?)) AND ((`c` <= ?)) /*checksum chunk*/
REPLACE INTO `percona`.`checksums` (db, tbl, chunk, chunk_index, lower_boundary, upper_boundary, this_cnt, this_crc) SELECT ?, ?, ?, ?, ?, ?, COUNT(*), '0' FROM `test`.`ascii` FORCE INDEX(`c`) WHERE ((`c` < ?)) ORDER BY `c` /*past lower chunk*/

2
t/pt-table-checksum/samples/oversize-chunks.txt
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@@ -2,7 +2,7 @@
-- osc.t2
--
REPLACE INTO `percona`.`checksums` (db, tbl, chunk, chunk_index, lower_boundary, upper_boundary, this_cnt, this_crc) SELECT ?, ?, ?, ?, ?, ?, COUNT(*) AS cnt, COALESCE(LOWER(CONV(BIT_XOR(CAST(CRC32(CONCAT_WS('#', `c`, CONCAT(ISNULL(`c`)))) AS UNSIGNED)), 10, 16)), 0) AS crc FROM `osc`.`t2` FORCE INDEX(`c`) WHERE (((? IS NULL OR `c` >= ?))) AND (((? IS NULL OR `c` <= ?))) ORDER BY `c` /*checksum chunk*/
REPLACE INTO `percona`.`checksums` (db, tbl, chunk, chunk_index, lower_boundary, upper_boundary, this_cnt, this_crc) SELECT ?, ?, ?, ?, ?, ?, COUNT(*) AS cnt, COALESCE(LOWER(CONV(BIT_XOR(CAST(CRC32(CONCAT_WS('#', `c`, CONCAT(ISNULL(`c`)))) AS UNSIGNED)), 10, 16)), 0) AS crc FROM `osc`.`t2` FORCE INDEX(`c`) WHERE (((? IS NULL OR `c` >= ?))) AND (((? IS NULL OR `c` <= ?))) /*checksum chunk*/
REPLACE INTO `percona`.`checksums` (db, tbl, chunk, chunk_index, lower_boundary, upper_boundary, this_cnt, this_crc) SELECT ?, ?, ?, ?, ?, ?, COUNT(*), '0' FROM `osc`.`t2` FORCE INDEX(`c`) WHERE ((((? IS NOT NULL AND `c` IS NULL) OR (`c` < ?)))) ORDER BY `c` /*past lower chunk*/