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DELIMITER $$
DROP PROCEDURE IF EXISTS upgrade_database_3531d $$
CREATE PROCEDURE upgrade_database_3531d()
BEGIN
IF EXISTS (
SELECT * FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=DATABASE() AND TABLE_NAME='kepzesOraszam' AND COLUMN_NAME='evfolyam'
) THEN
alter table `kepzesOraszam` DROP `evfolyam`;
END IF;
IF EXISTS (
SELECT * FROM information_schema.COLUMNS WHERE TABLE_SCHEMA=DATABASE() AND TABLE_NAME='kepzesOraterv' AND COLUMN_NAME='evfolyam'
) THEN
alter table `kepzesOraterv` drop key `kot_kulcs`;
alter table `kepzesOraterv` DROP `evfolyam`;
END IF;
END $$
DELIMITER ;
CALL upgrade_database_3531d();
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