MariaDB 设置 sql_mode=Oracle 和 Oracle 对比验证

功能		Oracle语法	MariaDB语法	Oracle执行结果	MariaDB执行结果
创建存储过程	未使用参数和变量	CREATE PROCEDURE p1 AS BEGIN NULL; END p1; /	DELIMITER // CREATE PROCEDURE p1() IS BEGIN NULL; END // DELIMITER ;
创建存储过程	带有参数和变量	CREATE PROCEDURE p1(p_input IN NUMBER, p_output OUT NUMBER) AS v_variable VARCHAR2(100); BEGIN v_variable := 'Hello, World!'; p_output := p_input * 2; END; /	DELIMITER // CREATE PROCEDURE p1(INOUT p_input INT) BEGIN DECLARE v_variable VARCHAR(100); SET v_variable = 'Hello, World!'; SET p_input = p_input * 2; END // DELIMITER ;
创建存储函数		CREATE FUNCTION f1(a VARCHAR2) RETURN VARCHAR2 IS v_result VARCHAR2(100); BEGIN `v_result := a		' appended text'; RETURN v_result; END; /`	DELIMITER // CREATE FUNCTION f1(a VARCHAR(100)) RETURN VARCHAR(100) IS v_result VARCHAR(100); BEGIN SET v_result = CONCAT(a, ' appended text'); RETURN v_result; END // DELIMITER ;
游标	带有FOR 循环显式游标	CREATE TABLE t1 ( a NUMBER, b NUMBER ); INSERT INTO t1 (a, b) VALUES (1, 2); INSERT INTO t1 (a, b) VALUES (3, 4); INSERT INTO t1 (a, b) VALUES (5, 6); CREATE OR REPLACE PROCEDURE p1 AS a_val t1.a%TYPE; b_val t1.b%TYPE; CURSOR cur IS SELECT a, b FROM t1; BEGIN FOR rec IN cur LOOP a_val := rec.a; b_val := rec.b; `DBMS_OUTPUT.PUT_LINE('a: '		a_val
游标	带有 FOR 循环的隐式游标	CREATE OR REPLACE PROCEDURE p1 IS BEGIN FOR rec IN (SELECT a, b FROM t1) LOOP `DBMS_OUTPUT.PUT_LINE('A = '		rec.a
游标	带有参数和 FOR 循环的游标	CREATE OR REPLACE PROCEDURE process_cursor(prm_a IN INT, prm_b IN INT) IS CURSOR c IS SELECT a, b FROM t1 WHERE a = prm_a AND b = prm_b; BEGIN FOR rec IN c LOOP `DBMS_OUTPUT.PUT_LINE('A: '		rec.a
游标	s %ISOPEN， %ROWCOUNT， %FOUND， %NOTFOUND方式显式游标属性	SET SERVEROUTPUT ON; BEGIN DECLARE CURSOR c IS SELECT a, b FROM t1; v_a t1.a%TYPE; v_b t1.b%TYPE; BEGIN OPEN c; IF c%ISOPEN THEN DBMS_OUTPUT.PUT_LINE('Cursor is open.'); ELSE DBMS_OUTPUT.PUT_LINE('Cursor is not open.'); END IF; LOOP FETCH c INTO v_a, v_b; EXIT WHEN c%NOTFOUND; `DBMS_OUTPUT.PUT_LINE('A: '		v_a