Обсуждение: Porting from PL/SQL to PLPGSQL

> Hi,
> 
> We are in the process of migrating of our application from Oracle to
> PostGreSQL.
> 
> 
> we are  facing a few problems with PL/SQL Code..
> 
> 1)     Can we perform DML statements on VIEWS in PostGreSQL as we do in
> ORACLE?
>     Do I need to create some RULES for that ??
>     
> 2    In Oracle sqlplus we can run sql script files as @script_name;
>     How do we do the same in PostGres.
>     Also is there any replacement for "&&" in PostGres ?
> 
> 
>     Eg:
>         CREATE USER CATALOG
>         IDENTIFIED BY &ORA_PASSWORD
>         DEFAULT TABLESPACE &DFLT_TABLESPACE
>         TEMPORARY TABLESPACE &TEMP_TABLESPACE
> 
> 
> Regards
> 
> Jomon Skariah.
> 

Hi Josh,

Thanks for your reply.

In our PL/SQL code we have used userenv('LANG') in some of the INSERT
statements.
Do we have a replacement for this..

Regards

Jomon





-----Original Message-----
From: Josh Berkus [mailto:josh@agliodbs.com]
Sent: Thursday, August 14, 2003 1:05 AM
To: Jomon Skariah; pgsql-sql@postgresql.org
Subject: Re: [SQL] Porting from PL/SQL to PLPGSQL


Jomon,

> 1)     In Exceptions ORACLE have something called WHEN OTHERS THEN cluase.I
> can't find a replacement for that in 
>             PostGreSQL.

PL/pgSQL currently does not handle exceptions at all.  This is on the TODO 
list.

> 2    Oracle have a function USERENV to get the user session
> information.Is there any replacement available in PostGres. ?

There are several variables and tools which provide current user and session

information.  See the "PostgreSQL Administration" section of the 
documentation.

> 3    Is there any replace available for INSTEAD OF INSERT/DELETE/UPDATE
> for triggers in PostGreSQL.

In Postgres, this is generally done through the RULES system instead of 
triggers.  Please lookup CREATE RULE in the online docs.

-- 
-Josh BerkusAglio Database SolutionsSan Francisco