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Kimi86
Yak Posting Veteran
79 Posts |
 Posted - 2014-04-01 : 21:31:27
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| CREATE TABLE EmployeeDetails ( EmployeeId VARCHAR(20) PRIMARY KEY, FirstName VARCHAR(20) NOT NULL, LastName VARCHAR(20) NOT NULL, IsActive BINARY NOT NULL, YearlyPay DECIMAL(20,4) NOT NULL, AddressId INT REFERENCES [Address](AddressId));I have above tableI want to modify the above script to creat a check constraint on yearlyPay such that Yearlypay< Payment.MaxPay and Yearlypay >Payment.MaxPaywhere Payment is another table.Also I don't want to create the constraint separately.. but want to create it while creating the table..Please suggest |
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robvolk
Most Valuable Yak
15732 Posts |
Posted - 2014-04-02 : 07:06:49
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quote:
Originally posted by Kimi86I want to modify the above script to creat a check constraint on yearlyPay such that Yearlypay< Payment.MaxPay and Yearlypay >Payment.MaxPay
Is this a typo? It's not possible for a value to be both less than and greater than another value.quote:
where Payment is another table.
The only inter-table constraints SQL Server supports are foreign keys, and they are based only on equality of values. A check constraint cannot reference another table, unless you use a user-defined function to perform the comparison. While this is possible it will likely cause poor performance. |
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check constraint