我正在尝试创建一个表,但我只能为 INT 设置正值,我该怎么做?
CREATE TABLE Ingredients(
IngredientID INTEGER PRIMARY KEY NOT NULL,
IngredientName VARCHAR(255),
IngredientClassID SMALLINT NOT NULL,
MeasureAmountID SMALLINT NOT NULL
);
最佳答案
尝试这个...
CREATE TABLE Ingredients(
IngredientID INTEGER PRIMARY KEY,
IngredientName VARCHAR(255),
IngredientClassID SMALLINT NOT NULL,
MeasureAmountID SMALLINT NOT NULL,
CHECK (IngredientClassID>0),
CHECK (MeasureAmountID>0)
);
关于oracle - int 值,只有正项,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20258172/