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53 lines
1.0 KiB
Plaintext
53 lines
1.0 KiB
Plaintext
DROP TABLE IF EXISTS t1,t2,t3;
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DROP PROCEDURE IF EXISTS sp1;
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CREATE TABLE t1 (id INTEGER NOT NULL PRIMARY KEY, data INTEGER NULL);
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CREATE TABLE t2 (i INTEGER NULL);
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CREATE TABLE t3 (id INTEGER NOT NULL PRIMARY KEY, data INTEGER NULL);
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INSERT INTO t1 VALUES(1,1),(2,1),(3,4),(4,5);
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INSERT INTO t2 VALUES(1),(2),(3);
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CREATE PROCEDURE sp1()
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BEGIN
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DECLARE done INT DEFAULT 0;
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DECLARE a CHAR(16);
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DECLARE b,c INT;
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DECLARE cur1 CURSOR FOR SELECT id,data FROM t1;
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DECLARE cur2 CURSOR FOR SELECT i FROM t2;
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DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET done = 1;
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OPEN cur1;
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OPEN cur2;
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REPEAT
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FETCH cur1 INTO a, b;
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FETCH cur2 INTO c;
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IF NOT done THEN
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IF b < c THEN
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INSERT INTO t3 VALUES (a,b);
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ELSE
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INSERT INTO t3 VALUES (a,c);
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END IF;
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END IF;
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UNTIL done END REPEAT;
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CLOSE cur1;
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CLOSE cur2;
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END//
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CALL sp1();
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Warnings:
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Error 1329 No data - zero rows fetched, selected, or processed
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SELECT * FROM t1 ORDER BY id;
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id data
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1 1
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2 1
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3 4
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4 5
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SELECT * FROM t2 ORDER BY i;
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i
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1
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2
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3
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SELECT * FROM t3 ORDER BY id;
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id data
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1 1
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2 1
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3 3
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DROP PROCEDURE sp1;
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DROP TABLE t1,t2,t3;
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