RANGE Column Constraint

Purpose

Column constraint to specify minimum and maximum values for a date or numerical column

Syntax

RANGE <expr1>,<expr2>

See Also

ALTER TABLE, CONSTRAINTS, CREATE TABLE

Description

A constraint is used to define rules that help to provide data integrity. Column constraints are specific to the column name specified. You must have ALTER privilege on the table. The table will be locked for EXCLUSIVE use during the operation.

The RANGE column constraint is used to specify minimum and maximum values for a date or numerical column. The minimum value is specified in <expr1>, the maximum in <expr2>. Attempting to update the column with a value outside this range generates an error.

Example

CREATE TABLE orderhead;
  (ord_week INT RANGE 1,52,;
  ord_date DATE RANGE date(), gomonth(date(),12))

Products

Recital, Recital Server