Re: List table with same column name

On Thu, 23 Oct 2003 achill@matrix.gatewaynet.com wrote:

> On Thu, 23 Oct 2003, Abdul Wahab Dahalan wrote:
>
> > Hi!
> > How do I list all the tables in the database which has a same column name?.
>
> SELECT t1.relname,a1.attname,t2.relname from pg_class t1,pg_attribute
> a1,pg_class t2,pg_attribute a2 where a1.attrelid=t1.oid and t1.relkind='r'
> and a1.attnum>0 and a2.attrelid=t2.oid and t2.relkind='r' and a2.attnum>0
> and t1.relname<t2.relname and a1.attname = a2.attname;
That will not work.

SELECT t1.relname,a1.attname,t2.relname from pg_class t1,pg_attribute
a1,pg_class t2,pg_attribute a2 where a1.attrelid=t1.oid and
t1.relkind='r'and a1.attnum>0 and a2.attrelid=t2.oid and t2.relkind='r'
and a2.attnum>0 and t1.relname<t2.relname and a1.attname = a2.attname and
a1.attisdropped=false and a2.attisdropped=false and t1.relname !=
t2.relname;
Why?

Well two bugs.
1> Dropped Columns needed for 7.3.
2> Do you really need to know that column a in table 1 also appears in
table 1?

Peter Childs

>
> >
> > Thanks
> >
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