mysql insert based on condition

Question

I need to insert some values in a table based on a condition. Basically I have 2 fields:

From and To

I need to insert the values in their range in increments of 11.

Suppose the following

From = 79090200 To = 79090233

So the following values would be saved: 79090200 79090211 79090222 79090233

I still a newbie so any help would mean a lot.

Answer 1

You can generate a range of numbers using UNION and insert based on that. Something like this:-

INSERT INTO SomeTable (SomeNumeric)
SELECT 79090200 + ((Units.i + Tens.i * 10 + Hundreds.i * 100) * 11) AS SomeNumber
(SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9) Units,
(SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9) Tens,
(SELECT 0 i UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9) Hundreds
HAVING SomeNumber BETWEEEN 79090200 AND 79090233

Answer 2

You can use below stored procedure to store these values in a table

DELIMITER $$
USE test$$

DROP PROCEDURE IF EXISTS `sp_increment`$$

CREATE DEFINER = `root`@`localhost` PROCEDURE `test`.`sp_increment`()

    BEGIN


DECLARE start_val INT;
DECLARE end_val INT;

SET start_val=79090200;
SET end_val=79090233;

WHILE start_val <= end_val DO
    INSERT INTO mytable (mycolumn) VALUES(start_val);
    SET start_val = start_val + 11;
END WHILE;


    END$$

DELIMITER ;

You can use below procedure to get values from a table-

DELIMITER $$
USE test$$

DROP PROCEDURE IF EXISTS `sp_increment`$$

CREATE DEFINER = `root`@`localhost` PROCEDURE `test`.`sp_increment`()

    BEGIN


 DECLARE s_val INT;
 DECLARE e_val INT;

SELECT st_val, end_val INTO @start_val, @end_val FROM my_val;

 SET s_val=@start_val;
 SET e_val=@end_val;

WHILE s_val <= e_val DO
    INSERT INTO increment_tbl VALUES(s_val);
    SET s_val = s_val + 11;
END WHILE;


    END$$

DELIMITER ;