EVOLUTION-MANAGER

Edit File: sp_cursor.result

DROP TABLE IF EXISTS t1,t2,t3; DROP PROCEDURE IF EXISTS sp1; CREATE TABLE t1 (id INTEGER NOT NULL PRIMARY KEY, data INTEGER NULL); CREATE TABLE t2 (i INTEGER NULL); CREATE TABLE t3 (id INTEGER NOT NULL PRIMARY KEY, data INTEGER NULL); INSERT INTO t1 VALUES(1,1),(2,1),(3,4),(4,5); INSERT INTO t2 VALUES(1),(2),(3); CREATE PROCEDURE sp1() BEGIN DECLARE done INT DEFAULT 0; DECLARE a CHAR(16); DECLARE b,c INT; DECLARE cur1 CURSOR FOR SELECT id,data FROM t1; DECLARE cur2 CURSOR FOR SELECT i FROM t2; DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET done = 1; OPEN cur1; OPEN cur2; REPEAT FETCH cur1 INTO a, b; FETCH cur2 INTO c; IF NOT done THEN IF b < c THEN INSERT INTO t3 VALUES (a,b); ELSE INSERT INTO t3 VALUES (a,c); END IF; END IF; UNTIL done END REPEAT; CLOSE cur1; CLOSE cur2; END// CALL sp1(); SELECT * FROM t1 ORDER BY id; id data 1 1 2 1 3 4 4 5 SELECT * FROM t2 ORDER BY i; i 1 2 3 SELECT * FROM t3 ORDER BY id; id data 1 1 2 1 3 3 DROP PROCEDURE sp1; DROP TABLE t1,t2,t3;