15 lines
282 B
MySQL
15 lines
282 B
MySQL
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ALTER TABLE products
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ADD COLUMN price integer NOT NULL;
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ALTER TABLE products
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ADD CONSTRAINT non_negative CHECK (price >= 0);
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UPDATE products
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SET price = price_major * 100 + price_minor;
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ALTER TABLE products
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DROP COLUMN price_minor;
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ALTER TABLE products
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DROP COLUMN price_major;
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