命运狂想曲回来了: 是循环只执行了一次，第一次查询的@num结果为0，需要加个while循环才行

命运狂想曲回来了: [code=sql] CREATE DEFINER=`xidian-syslogs`@`%` PROCEDURE `NewProc`() BEGIN DECLARE tableCount int; DECLARE sum int; DECLARE p_num int; DECLARE tableName VARCHAR(50); DECLARE tableList CURSOR FOR select table_name FROM information_schema.TABLES WHERE table_schema = 'xidian-syslogs' and table_name LIKE 'sys_log_system%'; SELECT count(table_name) into tableCount FROM information_schema.TABLES WHERE table_schema = 'xidian-syslogs' and table_name LIKE 'sys_log_system%'; set sum =0; -- 遍历处方表 -- open tableList; fetch tableList into tableName; SET @query = CONCAT('SELECT count(*) INTO @num FROM ', tableName); PREPARE stmt FROM @query; EXECUTE stmt; DEALLOCATE PREPARE stmt; set sum = sum + @num; set tableCount = tableCount -1; CLOSE tableList; SELECT sum; END [/code] 为什么我这么写查出来的sum结果为0，好像循环体没有被执行，或者@num 的值没被拿到

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