Re: PLPGSQL

On Mar 23, 2005, at 8:51 AM, Shaun Clements wrote:

> Hi Sean
>
> Ive chosen the table structure on purpose.
> Im transforming data from one table to another. The problem is still
> there.
> I receive the column name from a query in one table, and then need to
> update the table with that column name in another.
>
> This needs to be done dynamically as part of a loop. So the column
> name needs to be called as a variable.
> Im stuck.
>

The answer is here to allow you to construct SQL statements from parts:

http://www.postgresql.org/docs/current/static/plpgsql-
statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN

You can pass your column name as an argument to a function that does
what you want and then concatenate it with whatever else you want in
your SQL.  Then just EXECUTE the resulting statement.

Sean