From: | Chris Barnes <compuguruchrisbarnes(at)hotmail(dot)com> |
---|---|
To: | Postgres General Postgres General <pgsql-general(at)postgresql(dot)org> |
Subject: | Using concatenation operator |
Date: | 2010-08-17 16:28:00 |
Message-ID: | BLU149-W33402AE5ABDC1F682D0818D49C0@phx.gbl |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
I have a (stupid) question regarding using concatenation operator.
I would like to get the list of tables from the database and output the select count(*) for each of them
I don't want the schema name proceeding the select, how can I omit without receiving the error below.
psql eventdb001 -t -c "select schemaname||'select count (*) from '||schemaname||'.'||relname from pg_stat_user_tables where relname like 'table_%'"|more
schemaselect count (*) from event001.table_1
schemaselect count (*) from event001.table_2
When I omit the schemaname from in front of the concatenation operator it gives me this error.
psql database -t -c "select ||'select count (*) from '||schemaname||'.'||relname from pg_stat_user_tables where relname like 'table_%'"|more
ERROR: operator does not exist: || unknown
LINE 1: select ||'select count (*) from '||schemaname||'.'||relname ...
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts
Chris.
From | Date | Subject | |
---|---|---|---|
Next Message | Alban Hertroys | 2010-08-17 17:17:04 | Re: Using concatenation operator |
Previous Message | Thom Brown | 2010-08-17 15:21:18 | Re: Postgresql's table & index compared to that of MySQL |