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Use if statement with LOOP statement
Conditional if statements in SQL are used to perform different actions based on different conditions.

Use if statement with LOOP statement

Conditional if statements in SQL are used to perform different actions based on different conditions.

Understand with Example

The Tutorial illustrate a example from if statement with LOOP statement. In this example we create a procedure display that accept no as input parameter and data type is int. The Begin Statement include a declare keyword that define the variable and its data type. The if and else is used to execute the code if the condition is true or the condition is false.

Create Procedure

DELIMITER $$

DROP PROCEDURE IF EXISTS display$$

CREATE PROCEDURE display(no int)

    BEGIN
	DECLARE count INT DEFAULT 0;

	display: LOOP
	SET count=count+1;

		select count;

	IF count=no THEN
		LEAVE display;
	END IF;

	END LOOP display;
    END$$

DELIMITER ;

Call Procedure

call display(5);

Result

+-------+
| count |
+-------+
| 1     |
+-------+
1 row in set (0.00 sec)

+-------+
| count |
+-------+
| 2     |
+-------+
1 row in set (0.01 sec)

+-------+
| count |
+-------+
| 3     |
+-------+
1 row in set (0.05 sec)

+-------+
| count |
+-------+
| 4     |
+-------+
1 row in set (0.05 sec)

+-------+
| count |
+-------+
| 5     |
+-------+
1 row in set (0.05 sec)

ť View all related tutorials

Related Tags: sql mysql c string oop com function fun io sed char padding length oo character case cas if ie unc

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