MySQL 存储过程中执行动态 SQL 语句
mysql> mysql> delimiter $$ mysql> mysql> CREATE PROCEDURE set_col_value -> (in_table VARCHAR(128), -> in_column VARCHAR(128), -> in_new_value VARCHAR(1000), -> in_where VARCHAR(4000)) -> -> BEGIN -> DECLARE l_sql VARCHAR(4000); -> SET l_sql=CONCAT_ws(' ', -> 'UPDATE',in_table, -> 'SET',in_column,'=',in_new_value, -> ' WHERE',in_where); -> SET @sql=l_sql; -> PREPARE s1 FROM @sql; -> EXECUTE s1; -> DEALLOCATE PREPARE s1; -> END$$ Query OK, 0 rows affected (0.00 sec)