On Tue, Dec 17, 2013 at 2:23 PM, Raghavendra < raghavendra....@enterprisedb.com> wrote:
> On Tue, Dec 17, 2013 at 1:29 PM, Stefan Schwarzer < > stefan.schwar...@unep.org> wrote: > >> Hi there, >> >> I have dozens of tables where I need to rename one column in each of >> these. Is there any generic way to do that? >> > I am not really familiar with the scripting possibilities of Postgres. >> >> Thanks a lot for your help! >> >> Stefan >> >> > You can do with script. I made one on fly for this, other's might have > more polished version. > > -bash-4.1$ more rename.sh > #!/bin/bash > OLDCOLUMN=aa > NEWCOLUMN=a > for i in $(psql -t -c "select table_schema||'.'||table_name from > information_schema.tables where table_schema='public';") > do > /opt/PostgreSQL/9.3/bin/psql -p 5432 -U postgres -c "alter table $i > rename column $OLDCOLUMN to $NEWCOLUMN;" > done > > Replace the port,user,OLDCOLUMN, NEWCOLUMN and SCHEMA according to your > requirement. > > One more way from command line -bash-4.1$ OLDCOLUMN=xyz -bash-4.1$ NEWCOLUMN=abc -bash-4.1$ psql -c "select 'alter table '||table_schema||'.'||table_name||' rename column $OLDCOLUMN to $NEWCOLUMN ;' from information_schema.tables where table_schema='public';" | psql --Raghav
