Hi
I come from a MSSQL background and am trying to figure out how to write
deployment scripts for PostgreSQL. Typically, if I want to drop a
function, I would write a script that first checks for it's existence and
then performs the drop.
In MSSQL it would be as easy as (this can be done in native TSQL):
IF EXISTS (...some query to system tables...)
DROP function XXX
However, I am really strugling to understand how to do this in PostgreSQL.
It seem the standard SQL language doesn't support the IF statement.
All the development that I do needs to be deployed in a script fashion and
generally I need to check for the existence of an object before replacing
or dropping.
Any help will be much appreciated.
Thanks
Craig
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