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songyunlu/sameDataTypeComparison.sql

Last active December 14, 2015 10:09
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sameDataTypeComparison.sql
/* 欄位定義：`remark` varchar(50) NOT NULL */
/* 執行時間：0.14 秒 */
SELECT `id`, `gift_code` FROM gift WHERE `deal_id` = 640 AND remark = 115127;
/* 執行時間：0.005 秒 */
SELECT `id`, `gift_code` FROM gift WHERE `deal_id` = 640 AND remark = '15127';
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