mirror of
https://github.com/MariaDB/server.git
synced 2025-01-30 18:41:56 +01:00
483 lines
9.2 KiB
Text
483 lines
9.2 KiB
Text
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#
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# MDEV-12457 Cursors with parameters
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#
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CREATE TABLE t1 (a INT, b VARCHAR(10)) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (1,'old'),(2,'old'),(3,'old'),(4,'old'),(5,'old');
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CREATE PROCEDURE p1(min INT,max INT)
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BEGIN
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DECLARE done INT DEFAULT FALSE;
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DECLARE va INT;
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DECLARE cur CURSOR(pmin INT, pmax INT) FOR SELECT a FROM t1 WHERE a BETWEEN pmin AND pmax;
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DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=TRUE;
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OPEN cur(min,max);
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read_loop: LOOP
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FETCH cur INTO va;
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IF done THEN
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LEAVE read_loop;
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END IF;
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INSERT INTO t1 VALUES (va,'new');
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END LOOP;
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CLOSE cur;
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END;
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$$
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CALL p1(2,4);
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SELECT * FROM t1 ORDER BY b DESC,a;
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a b
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1 old
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2 old
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3 old
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4 old
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5 old
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2 new
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3 new
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4 new
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DROP PROCEDURE p1;
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DROP TABLE t1;
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#
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# OPEN with a wrong number of parameters
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#
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CREATE TABLE t1 (a INT, b VARCHAR(10));
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CREATE PROCEDURE p1(a_a INT,a_b VARCHAR(32))
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BEGIN
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DECLARE v_a INT;
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DECLARE v_b VARCHAR(10);
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DECLARE c CURSOR (p_a INT, p_b VARCHAR(32)) FOR SELECT * FROM t1 WHERE a=p_a;
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OPEN c(a_a);
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CLOSE c;
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END;
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$$
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ERROR 42000: Incorrect parameter count to cursor 'c'
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DROP TABLE t1;
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#
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# Cursor parameters are not visible outside of the cursor
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#
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CREATE PROCEDURE p1(a_a INT)
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BEGIN
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DECLARE v_a INT;
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DECLARE c CURSOR (p_a INT) FOR SELECT a FROM t1 WHERE a=p_a;
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OPEN c(a_a);
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SET p_a=10;
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END;
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$$
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ERROR HY000: Unknown system variable 'p_a'
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CREATE PROCEDURE p1(a_a INT)
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BEGIN
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DECLARE v_a INT;
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DECLARE c CURSOR (p_a INT) FOR SELECT a FROM t1 WHERE a=p_a;
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SET p_a= 10;
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OPEN c(a_a);
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END;
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$$
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ERROR HY000: Unknown system variable 'p_a'
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#
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# Cursor parameter shadowing a local variable
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#
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CREATE TABLE t1 (a INT);
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INSERT INTO t1 VALUES (1);
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CREATE PROCEDURE p1(a INT)
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BEGIN
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DECLARE done INT DEFAULT 0;
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DECLARE v_a INT DEFAULT NULL;
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DECLARE p_a INT DEFAULT NULL;
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DECLARE c CURSOR (p_a VARCHAR(32)) FOR SELECT p_a FROM t1;
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DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=TRUE;
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OPEN c(a);
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read_loop: LOOP
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FETCH c INTO v_a;
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IF done THEN
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LEAVE read_loop;
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END IF;
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SELECT v_a;
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END LOOP;
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CLOSE c;
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END;
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$$
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CALL p1(1);
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v_a
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1
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CALL p1(NULL);
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v_a
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NULL
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DROP PROCEDURE p1;
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DROP TABLE t1;
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#
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# Parameters in SELECT list
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#
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CREATE PROCEDURE p1(a_a INT, a_b VARCHAR(32))
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BEGIN
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DECLARE v_a INT;
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DECLARE v_b VARCHAR(10);
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DECLARE c CURSOR (p_a INT, p_b VARCHAR(32)) FOR SELECT p_a,p_b FROM DUAL;
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OPEN c(a_a + 0,a_b);
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FETCH c INTO v_a, v_b;
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SELECT v_a, v_b;
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CLOSE c;
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OPEN c(a_a + 1,a_b);
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FETCH c INTO v_a, v_b;
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SELECT v_a, v_b;
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CLOSE c;
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END;
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$$
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CALL p1(1,'b1');
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v_a v_b
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1 b1
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v_a v_b
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2 b1
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DROP PROCEDURE p1;
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#
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# Parameters in SELECT list + UNION
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#
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CREATE PROCEDURE p1(a_a INT, a_b VARCHAR(32))
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BEGIN
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DECLARE v_a INT;
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DECLARE v_b VARCHAR(10);
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DECLARE c CURSOR(p_a INT, p_b VARCHAR(32)) FOR
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SELECT p_a,p_b FROM DUAL
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UNION ALL
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SELECT p_a+1,CONCAT(p_b,'b') FROM DUAL;
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OPEN c(a_a,a_b);
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FETCH c INTO v_a, v_b;
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SELECT v_a, v_b;
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FETCH c INTO v_a, v_b;
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SELECT v_a, v_b;
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CLOSE c;
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END;
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$$
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CALL p1(1,'b1');
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v_a v_b
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1 b1
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v_a v_b
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2 b1b
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DROP PROCEDURE p1;
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#
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# Parameters in SELECT list + type conversion + warnings
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#
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SET sql_mode='';
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CREATE PROCEDURE p1(a_a VARCHAR(32))
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BEGIN
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DECLARE v_a INT;
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DECLARE c CURSOR (p_a INT) FOR SELECT p_a FROM DUAL;
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OPEN c(a_a);
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FETCH c INTO v_a;
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SELECT v_a;
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CLOSE c;
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END;
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$$
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CALL p1('1b');
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v_a
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1
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Warnings:
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Warning 1265 Data truncated for column 'p_a' at row 1
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CALL p1('b1');
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v_a
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0
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Warnings:
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Warning 1366 Incorrect integer value: 'b1' for column 'p_a' at row 1
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DROP PROCEDURE p1;
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SET sql_mode=DEFAULT;
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#
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# One parameter in SELECT list + subselect
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#
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CREATE PROCEDURE p1(a_a VARCHAR(32))
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BEGIN
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DECLARE v_a VARCHAR(10);
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DECLARE c CURSOR (p_a VARCHAR(32)) FOR
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SELECT p_a FROM DUAL UNION SELECT REVERSE(p_a) FROM DUAL;
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OPEN c((SELECT a_a));
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FETCH c INTO v_a;
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SELECT v_a;
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FETCH c INTO v_a;
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SELECT v_a;
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CLOSE c;
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END;
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$$
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CALL p1('ab');
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v_a
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ab
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v_a
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ba
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DROP PROCEDURE p1;
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#
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# Two parameters in SELECT list + subselect
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#
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CREATE PROCEDURE p1()
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BEGIN
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DECLARE v_a VARCHAR(32);
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DECLARE v_b VARCHAR(32);
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DECLARE c CURSOR (p_a VARCHAR(32), p_b VARCHAR(32)) FOR
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SELECT p_a, p_b FROM DUAL
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UNION
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SELECT p_b, p_a FROM DUAL;
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OPEN c((SELECT 'aaa'),(SELECT 'bbb'));
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FETCH c INTO v_a, v_b;
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SELECT v_a, v_b;
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FETCH c INTO v_a, v_b;
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SELECT v_a, v_b;
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CLOSE c;
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END;
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$$
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CALL p1();
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v_a v_b
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aaa bbb
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v_a v_b
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bbb aaa
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DROP PROCEDURE p1;
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#
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# Two parameters in SELECT list + two parameters in WHERE + subselects
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#
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CREATE PROCEDURE p1(a_a VARCHAR(32), a_b VARCHAR(32))
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BEGIN
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DECLARE done INT DEFAULT 0;
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DECLARE v_a VARCHAR(32);
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DECLARE v_b VARCHAR(32);
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DECLARE c CURSOR (value_a VARCHAR(32), value_b VARCHAR(32),
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pattern_a VARCHAR(32), pattern_b VARCHAR(32)) FOR
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SELECT value_a, value_b FROM DUAL WHERE value_a LIKE pattern_a
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UNION
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SELECT value_b, value_a FROM DUAL WHERE value_b LIKE pattern_b;
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DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=TRUE;
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OPEN c((SELECT 'aaa'),(SELECT 'bbb'),(SELECT a_a),(SELECT a_b));
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read_loop: LOOP
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FETCH c INTO v_a, v_b;
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IF done THEN
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LEAVE read_loop;
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END IF;
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SELECT v_a, v_b;
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END LOOP;
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CLOSE c;
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END;
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$$
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CALL p1('%','%');
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v_a v_b
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aaa bbb
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v_a v_b
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bbb aaa
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CALL p1('aaa','xxx');
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v_a v_b
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aaa bbb
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CALL p1('xxx','bbb');
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v_a v_b
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bbb aaa
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CALL p1('xxx','xxx');
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DROP PROCEDURE p1;
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#
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# Parameters in SELECT list + stored function
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#
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CREATE FUNCTION f1 (a VARCHAR(32)) RETURNS VARCHAR(32)
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BEGIN
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RETURN CONCAT(a,'y');
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END;
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$$
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CREATE PROCEDURE p1(a_a VARCHAR(32))
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BEGIN
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DECLARE done INT DEFAULT 0;
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DECLARE v_a VARCHAR(10);
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DECLARE v_b VARCHAR(10);
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DECLARE c CURSOR (p_sel_a VARCHAR(32), p_cmp_a VARCHAR(32)) FOR
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SELECT p_sel_a, p_cmp_a FROM DUAL;
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DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=TRUE;
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OPEN c(f1(a_a), f1(a_a));
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read_loop: LOOP
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FETCH c INTO v_a, v_b;
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IF done THEN
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LEAVE read_loop;
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END IF;
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SELECT v_a, v_b;
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END LOOP;
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CLOSE c;
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END;
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$$
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CALL p1('x');
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v_a v_b
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xy xy
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CALL p1(f1(COALESCE(NULL, f1('x'))));
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v_a v_b
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xyyy xyyy
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DROP PROCEDURE p1;
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DROP FUNCTION f1;
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#
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# One parameter in WHERE clause
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#
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CREATE TABLE t1 (a INT, b VARCHAR(10));
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CREATE TABLE t2 (a INT, b VARCHAR(10));
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INSERT INTO t1 VALUES (1,'11');
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INSERT INTO t1 VALUES (1,'12');
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INSERT INTO t1 VALUES (2,'21');
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INSERT INTO t1 VALUES (2,'22');
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INSERT INTO t1 VALUES (3,'31');
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INSERT INTO t1 VALUES (3,'32');
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CREATE PROCEDURE p1(a_a INT)
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BEGIN
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DECLARE done INT DEFAULT 0;
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DECLARE v_a INT;
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DECLARE v_b VARCHAR(10);
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DECLARE c CURSOR (p_a INT) FOR SELECT a,b FROM t1 WHERE a=p_a;
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DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=TRUE;
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OPEN c(a_a);
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read_loop: LOOP
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FETCH c INTO v_a, v_b;
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IF done THEN
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LEAVE read_loop;
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END IF;
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INSERT INTO t2 VALUES (v_a,v_b);
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END LOOP;
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CLOSE c;
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END;
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$$
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CALL p1(1);
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SELECT * FROM t2;
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a b
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1 11
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1 12
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DROP TABLE t1;
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DROP TABLE t2;
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DROP PROCEDURE p1;
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#
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# Two parameters in WHERE clause
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#
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CREATE TABLE t1 (a INT, b VARCHAR(10));
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CREATE TABLE t2 (a INT, b VARCHAR(10));
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INSERT INTO t1 VALUES (1,'11');
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INSERT INTO t1 VALUES (1,'12');
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INSERT INTO t1 VALUES (2,'21');
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INSERT INTO t1 VALUES (2,'22');
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INSERT INTO t1 VALUES (3,'31');
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INSERT INTO t1 VALUES (3,'32');
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CREATE PROCEDURE p1(a_a INT, a_b VARCHAR(32))
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BEGIN
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DECLARE done INT DEFAULT 0;
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DECLARE v_a INT;
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DECLARE v_b VARCHAR(10);
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DECLARE c CURSOR (p_a INT, p_b VARCHAR(32)) FOR SELECT a,b FROM t1 WHERE a=p_a AND b=p_b;
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DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=TRUE;
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OPEN c(a_a, a_b);
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read_loop: LOOP
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FETCH c INTO v_a, v_b;
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IF done THEN
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LEAVE read_loop;
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END IF;
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INSERT INTO t2 VALUES (v_a,v_b);
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END LOOP;
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CLOSE c;
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END;
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$$
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CALL p1(1,'11');
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SELECT * FROM t2;
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a b
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1 11
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DROP TABLE t1;
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DROP TABLE t2;
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DROP PROCEDURE p1;
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#
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# Parameters in WHERE and HAVING clauses
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#
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CREATE TABLE t1 (name VARCHAR(10), value INT);
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INSERT INTO t1 VALUES ('but',1);
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INSERT INTO t1 VALUES ('but',1);
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INSERT INTO t1 VALUES ('but',1);
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INSERT INTO t1 VALUES ('bin',1);
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INSERT INTO t1 VALUES ('bin',1);
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INSERT INTO t1 VALUES ('bot',1);
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CREATE PROCEDURE p1 (arg_name_limit VARCHAR(32), arg_total_limit INT)
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BEGIN
|
||
|
|
DECLARE i INT DEFAULT 0;
|
||
|
|
DECLARE v_name VARCHAR(10);
|
||
|
|
DECLARE v_total INT;
|
||
|
|
-- +0 is needed to work around the bug MDEV-11081
|
||
|
|
DECLARE c CURSOR(p_v INT) FOR
|
||
|
|
SELECT name, SUM(value + p_v) + 0 AS total FROM t1
|
||
|
|
WHERE name LIKE arg_name_limit
|
||
|
|
GROUP BY name HAVING total>=arg_total_limit;
|
||
|
|
WHILE i < 2 DO
|
||
|
|
BEGIN
|
||
|
|
DECLARE done INT DEFAULT 0;
|
||
|
|
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=TRUE;
|
||
|
|
OPEN c(i);
|
||
|
|
read_loop: LOOP
|
||
|
|
FETCH c INTO v_name, v_total;
|
||
|
|
IF done THEN
|
||
|
|
LEAVE read_loop;
|
||
|
|
END IF;
|
||
|
|
SELECT v_name, v_total;
|
||
|
|
END LOOP;
|
||
|
|
CLOSE c;
|
||
|
|
SET i= i + 1;
|
||
|
|
END;
|
||
|
|
END WHILE;
|
||
|
|
END;
|
||
|
|
$$
|
||
|
|
CALL p1('%', 2);
|
||
|
|
v_name v_total
|
||
|
|
bin 2
|
||
|
|
v_name v_total
|
||
|
|
but 3
|
||
|
|
v_name v_total
|
||
|
|
bin 4
|
||
|
|
v_name v_total
|
||
|
|
bot 2
|
||
|
|
v_name v_total
|
||
|
|
but 6
|
||
|
|
CALL p1('b_t', 0);
|
||
|
|
v_name v_total
|
||
|
|
bot 1
|
||
|
|
v_name v_total
|
||
|
|
but 3
|
||
|
|
v_name v_total
|
||
|
|
bot 2
|
||
|
|
v_name v_total
|
||
|
|
but 6
|
||
|
|
DROP PROCEDURE p1;
|
||
|
|
DROP TABLE t1;
|
||
|
|
#
|
||
|
|
# One parameter in LIMIT clause
|
||
|
|
#
|
||
|
|
CREATE TABLE t1 (a INT, b VARCHAR(10));
|
||
|
|
INSERT INTO t1 VALUES (1,'b1');
|
||
|
|
INSERT INTO t1 VALUES (2,'b2');
|
||
|
|
INSERT INTO t1 VALUES (3,'b3');
|
||
|
|
INSERT INTO t1 VALUES (4,'b4');
|
||
|
|
INSERT INTO t1 VALUES (5,'b5');
|
||
|
|
INSERT INTO t1 VALUES (6,'b6');
|
||
|
|
CREATE PROCEDURE p1(a_a INT)
|
||
|
|
BEGIN
|
||
|
|
DECLARE done INT DEFAULT 0;
|
||
|
|
DECLARE v_a INT;
|
||
|
|
DECLARE v_b VARCHAR(10);
|
||
|
|
DECLARE c CURSOR (p_a INT) FOR SELECT a,b FROM t1 ORDER BY a LIMIT p_a;
|
||
|
|
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=TRUE;
|
||
|
|
CREATE TABLE t2 (a INT, b VARCHAR(10));
|
||
|
|
OPEN c(a_a);
|
||
|
|
read_loop: LOOP
|
||
|
|
FETCH c INTO v_a, v_b;
|
||
|
|
IF done THEN
|
||
|
|
LEAVE read_loop;
|
||
|
|
END IF;
|
||
|
|
INSERT INTO t2 VALUES (v_a,v_b);
|
||
|
|
END LOOP;
|
||
|
|
CLOSE c;
|
||
|
|
SELECT * FROM t2;
|
||
|
|
DROP TABLE t2;
|
||
|
|
END;
|
||
|
|
$$
|
||
|
|
CALL p1(1);
|
||
|
|
a b
|
||
|
|
1 b1
|
||
|
|
CALL p1(3);
|
||
|
|
a b
|
||
|
|
1 b1
|
||
|
|
2 b2
|
||
|
|
3 b3
|
||
|
|
CALL p1(6);
|
||
|
|
a b
|
||
|
|
1 b1
|
||
|
|
2 b2
|
||
|
|
3 b3
|
||
|
|
4 b4
|
||
|
|
5 b5
|
||
|
|
6 b6
|
||
|
|
DROP TABLE t1;
|
||
|
|
DROP PROCEDURE p1;
|
||
|
|
#
|
||
|
|
# End of MDEV-12457 Cursors with parameters
|
||
|
|
#
|