MySQL中創建操做函數和存儲過程的命令

本文來自於程式先鋒Java學習論壇 ｗｗｗ.ｊａｖａｂｉｚ.ｃｎ 1. 創建存儲過程 CREATE PROCEDURE p (OUT ver_param VARCHAR(25), INOUT incr_param INT) BEGIN # Set value of OUT parameter SELECT VERSION() INTO ver_param; # Increment value of INOUT parameter SET incr_param = incr_param + 1; END; 2. 對存儲過程調用 mysql> SET @increment = 10; mysql> CALL p(@version, @increment); mysql> SELECT @version, @increment; 3. 創建函數 mysql> CREATE FUNCTION metaphon RETURNS STRING SONAME 'udf_example.so'; mysql> CREATE FUNCTION myfunc_double RETURNS REAL SONAME 'udf_example.so'; mysql> CREATE FUNCTION myfunc_int RETURNS INTEGER SONAME 'udf_example.so'; mysql> CREATE FUNCTION lookup RETURNS STRING SONAME 'udf_example.so'; mysql> CREATE FUNCTION reverse_lookup -> RETURNS STRING SONAME 'udf_example.so'; mysql> CREATE AGGREGATE FUNCTION avgcost -> RETURNS REAL SONAME 'udf_example.so'; 4. 刪除函數或者存儲過程 DROP {PROCEDURE | FUNCTION} [IF EXISTS] sp_name mysql> DROP FUNCTION metaphon; mysql> DROP FUNCTION myfunc_double; mysql> DROP FUNCTION myfunc_int; mysql> DROP FUNCTION lookup; mysql> DROP FUNCTION reverse_lookup; mysql> DROP FUNCTION avgcost; 5. 修改存儲過程何函數 ALTER {PROCEDURE | FUNCTION} sp_name [characteristic ...] { CONTAINS SQL | NO SQL | READS SQL DATA | MODIFIES SQL DATA } | SQL SECURITY { DEFINER | INVOKER } | COMMENT 'string'