create foreiggn key
ALTER TABLE tdb_goods
ADD FOREIGN KEY(brand_id)
REFERENCES tdb_goods_brands(brand_id);
提示我无法创建外键 为啥
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ALTER TABLE tdb_goods
ADD FOREIGN KEY(brand_id)
REFERENCES tdb_goods_brands(brand_id);
提示我无法创建外键 为啥
2016-07-15
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