42 lines
816 B
SQL
42 lines
816 B
SQL
DELIMITER $$
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CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`nextShelvingCodeMake`()
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BEGIN
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DECLARE newShelving VARCHAR(3);
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DECLARE vCode VARCHAR(3);
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SELECT MAX(code) INTO vCode
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FROM vn.shelving
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WHERE isPrinted = FALSE;
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SET @a1 := ASCII(MID(vCode,1,1));
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SET @a2 := ASCII(MID(vCode,2,1));
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SET @a3 := ASCII(MID(vCode,3,1)) + 1;
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IF @a3 > 90 THEN
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SET @a3 = 65;
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SET @a2 = @a2 + 1;
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IF @a2 > 90 THEN
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SET @a2 = 65;
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SET @a1 = @a1 + 1;
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IF @a1 > 90 THEN
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SET @a1 = 65;
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END IF;
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END IF;
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END IF;
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SET newShelving = CHAR(@a1,@a2,@a3 USING utf8);
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INSERT INTO vn.shelving(code) VALUES(newShelving);
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END$$
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DELIMITER ;
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