Re: [SQL] DB link from postgres to Oracle; how to query Dbname.tablename?

2013-10-02 Thread Jayadevan M
In PostgreSQL, you always connect to a 'database', then query tables. So if you are connecting to the 'wrong' database, you will get the error you mentioned. You can troubleshoot this in many ways - one way would be to enable logging on PostgreSQL side and check the log and see which database you

[SQL] Re: [ADMIN] DB link from postgres to Oracle; how to query Dbname.tablename?

2013-10-02 Thread Albe Laurenz
Bhanu Murthy wrote: Using Oracle Heterogeneous Services (Oracle HS) I have configured/created a DB link from Postgres 9.3 database into Oracle 11gR3 database (with postgres DB user credentials). SQL create public database link pg_link connect to postgres identified by blahblah using

[SQL] Re: [ADMIN] DB link from postgres to Oracle; how to query Dbname.tablename?

2013-10-02 Thread Chris Twombly
Do keep in mind that querying across databases generally garners really poor performance, and can bring your application to its knees with astonishing speed. From: pgsql-admin-ow...@postgresql.org [pgsql-admin-ow...@postgresql.org] on behalf of Albe

Re: [SQL] Help needed with Window function

2013-10-02 Thread David Johnston
gmb wrote item_code | _date| qty | max - ABC | 2013-04-05 | 10.00| 2013-04-05 ABC | 2013-04-06 | 10.00| 2013-04-06 ABC | 2013-04-06 | -2.00| 2013-04-06

Re: [SQL] Help needed with Window function

2013-10-02 Thread gmb
David Johnston wrote Basic idea: use ORDER BY in the window to auto-define a range-preceding frame. Create an array of all dates (tags in the example) that match with positive amounts. Negative amounts get their matching tag added to the array as NULL. The provided function looks into the