On Thu, 23 Oct 2003, Peter Childs wrote: > > > On Thu, 23 Oct 2003 [EMAIL PROTECTED] 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?
Have you ever thought that x<y implies x!=y ? > > Peter Childs > > > > > > > > > Thanks > > > > > > > > > ---------------------------(end of broadcast)--------------------------- > > > TIP 4: Don't 'kill -9' the postmaster > > > > > > > -- > > -Achilleus > > > > > > ---------------------------(end of broadcast)--------------------------- > > TIP 5: Have you checked our extensive FAQ? > > > > http://www.postgresql.org/docs/faqs/FAQ.html > > > -- -Achilleus ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
