SYSCOLUMNCONSTRAINTS

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Purpose

Description of the constraints for a table’s columns


See Also

DATA TYPES, SELECT, SYSTEM TABLES


Description

System Tables are system defined read-only tables. You can query these tables using the SELECT statement.


Column Data Type Width Description
TABLE_CAT C 30 Table catalog
TABLE_SCHEM C 30 Table schema
TABLE_NAME C 30 Table name
COLUMN_NAME C 32 Column name
CONSTRAINT_NAME C 30 Constraint Name (see below)
CONSTRAINT C 100 Constraint


Constraint names:

  • AUTOINC NEXT
  • AUTOINC STEP
  • CALCULATED
  • CHECK
  • CHOICES
  • DEFAULT
  • ERROR
  • HELP
  • NOT NULL
  • NULL SUPPORT
  • PICTURE
  • RANGE
  • RECALCULATE
  • WHEN


Example

SELECT column_name;
  FROM syscolumnconstraints;
  WHERE table_name = 'example'


Products

Recital, Recital Server