適用於SQL Server 2008
select b.* from sys.objects a inner join sys.columns b
on a.object_id= b.object_id where a.name='tabe_name'
select COLUMN_NAME from INFORMATION_SCHEMA.KEY_COLUMN_USAGE
where SUBSTRING(CONSTRAINT_NAME,1,2) = 'PK' and TABLE_NAME = 'table_name'
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