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23 lines
433 B
SQL
23 lines
433 B
SQL
DELIMITER $$
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CREATE PROCEDURE Migration()
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BEGIN
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DECLARE _count INT;
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SELECT COUNT(*) INTO _count
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_SCHEMA = DATABASE()
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AND TABLE_NAME = 'subscription'
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AND COLUMN_NAME = 'level';
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IF _count = 0 THEN
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ALTER TABLE subscription ADD COLUMN level INT DEFAULT 1;
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UPDATE subscription SET level = 3;
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END IF;
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END $$
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DELIMITER ;
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CALL Migration();
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