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)
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