Get List of Computed Columns in Database Table (SQL Server)
Check the sys.columns
system catalog view:
SELECT *
FROM sys.columns
WHERE is_computed = 1
This gives you all computed columns in this database.
If you want those for just a single table, use this query:
SELECT *
FROM sys.columns
WHERE is_computed = 1
AND object_id = OBJECT_ID('YourTableName')
This works on SQL Server 2005 and up.
UPDATE: There's even a sys.computed_columns
system catalog view which also contains the definition (expression) of the computed column - just in case that might be needed some time.
SELECT *
FROM sys.computed_columns
WHERE object_id = OBJECT_ID('YourTableName')
If you have many tables with computed columns and want to see the table names as well:
SELECT sys.objects.name, sys.computed_columns.name
from sys.computed_columns
inner join sys.objects on sys.objects.object_id = sys.computed_columns.object_id
order by sys.objects.name
For SQL Server 2000 the syntax is:
SELECT * FROM sys.columns
WHERE is_computed = 1
And the slightly more useful:
SELECT
sysobjects.name AS TableName,
syscolumns.name AS ColumnName
FROM syscolumns
INNER JOIN sysobjects
ON syscolumns.id = sysobjects.id
AND sysobjects.xtype = 'U' --User Tables
WHERE syscolumns.iscomputed = 1
sample output:
TableName ColumnName
===================== ==========
BrinksShipmentDetails Total
AdjustmentDetails Total
SoftCountDropDetails Total
CloserDetails Total
OpenerDetails Total
TransferDetails Total
(6 row(s) affected)
If you want to use the INFORMATION_SCHEMA
views, then try
SELECT
COLUMNPROPERTY(OBJECT_ID(TABLE_SCHEMA+'.'+TABLE_NAME),COLUMN_NAME,'IsComputed')
AS IS_COMPUTED,
*
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME='<Insert Your Table Name Here>'