Using a Multicolumn CHECK Constraint : Check « Constraints « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Constraints » Check 
7. 5. 9. Using a Multicolumn CHECK Constraint
4CREATE TABLE ClassGrades(
5>     ClassID int,
6>     StudentID int,
7>     GradeLetter varchar(2),
8>     Constraint PK_ClassGrades
9>         PRIMARY KEY(ClassID, StudentID),
10>     Constraint CK_GradeRange_ClassID
11>         CHECK (LEFT(UPPER(GradeLetter),1)
12>         LIKE '[A-F]' AND ClassID < 1000)
13)
14> GO
1>
2INSERT ClassGrades VALUES(11'C+')
3INSERT ClassGrades VALUES(12'A+')
4INSERT ClassGrades VALUES(13'V-')
5INSERT ClassGrades VALUES(10011'A')
6INSERT ClassGrades VALUES(9992'A')
7> GO

(rows affected)

(rows affected)
Msg 547, Level 16, State 1, Server J\SQLEXPRESS, Line 4
The INSERT statement conflicted with the CHECK constraint "CK_GradeRange_ClassID". The conflict occurred in database "master", table "dbo.ClassGrades".
The statement has been terminated.
Msg 547, Level 16, State 1, Server J\SQLEXPRESS, Line 5
The INSERT statement conflicted with the CHECK constraint "CK_GradeRange_ClassID". The conflict occurred in database "master", table "dbo.ClassGrades".
The statement has been terminated.

(rows affected)
1>
2> drop table ClassGrades;
3> GO
7. 5. Check
7. 5. 1. Using CHECK Constraints
7. 5. 2. Adding a CHECK Constraint to an Existing Table
7. 5. 3. Constraints with name
7. 5. 4. CHECK Clause
7. 5. 5. Check Constraint
7. 5. 6. CHECK (DATEPART(DAY, GETDATE()) < 28)
7. 5. 7. A check constraint uses an expression to qualify records that are acceptable for any Inserts or Updates
7. 5. 8. Use or to link two conditions for check constraint
7. 5. 9. Using a Multicolumn CHECK Constraint
7. 5. 10. Check for data length
7. 5. 11. Pattern based constraint
7. 5. 12. Mark nocheck for a constraint
7. 5. 13. A table-level check constraint that limits Banker IDs to a specific format
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