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 primary keys & foreign keys
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subbu_mareedu
Starting Member

India
11 Posts

Posted - 04/17/2014 :  13:05:47  Show Profile  Reply with Quote
how to find all primary key columns & foreign key columns in all database tables?

Regards
subbu

subbu

TG
Flowing Fount of Yak Knowledge

USA
6065 Posts

Posted - 04/17/2014 :  13:45:17  Show Profile  Reply with Quote
this information_schema view is one way:

[INFORMATION_SCHEMA].[CONSTRAINT_COLUMN_USAGE]

EDIT:
to limit the results to just the constraint types you mentioned then join in with table_constraints:

select c.table_name, c.constraint_name, c.constraint_type, u.column_name
from   information_schema.table_constraints c
join   information_schema.constraint_column_usage u on u.constraint_name = c.constraint_name
where  c.constraint_type in ('primary key', 'foreign key')
order by 1,3,2,4



Be One with the Optimizer
TG

Edited by - TG on 04/17/2014 14:03:26
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