Check for data length : Check « Constraints « SQL Server / T-SQL Tutorial






  1. SQL Server / T-SQL Tutorial
  2. Constraints
  3. Check
3> CREATE TABLE T (
4>     int1 int IDENTITY PRIMARY KEY,
5>     vch1 varchar(5)
6>         CHECK (LEN(vch1) > 0)
7>         NOT NULL,
8>     vch2 varchar(5)
9>         CONSTRAINT CK_LEN_TOO_SHORT
10>         CHECK (LEN(vch2) > 0)
11>         NOT NULL
12> )
13> GO
1>
2>
3> drop table t;
4> 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