Are you able to set up a SELECT query to get the result you want? If you are, it's as simple as putting "CREATE VIEW viewname AS ", followed by your query.
Garrett Murphy _____________________________________________ From: pgsql-sql-ow...@postgresql.org [mailto:pgsql-sql-ow...@postgresql.org] On Behalf Of Ray Madigan Sent: Monday, March 01, 2010 7:11 PM To: pgsql-sql@postgresql.org Subject: [SQL] Trigger on select :-( What I want is to have a trigger on select, but since I have searched the archives I know that is not possible. I also read that view rules is the technology is whats available. Having never used views before I can't seem to get my mind to figure out what I need to do to solve my problem. I have a table that defines a key that I will use in another table in a list of items defined in the previous table. The tables are CREATE TABLE Foo ( INTEGER key not null primary key, ... characteristics for the Foo item ); CREATE TABLE Catalog ( INTEGER FooKey FOREIGN KEY, ... other catalog data ); The catalog will have rows that reference the elements in the Foo table. I also have another table that references the Foo table CREATE TABLE ToDo ( INTEGER FooKey FOREIGN KEY, ... other ToDo information. What I want to do is when I do a SELECT on the Catalog and deliver the result to the user, I want to check to see if the FooKey is in the users ToDo table and set the value of a column isToDo to true or false depending on if the FooKey exists in the ToDo table for the user. If I were building a table I would use a trigger and select on the row in the ToDo table. Please, all I want is an idea where to start, what I should read and I will figure out how to do it. Thanks in advance. << File: ATT4311246.txt >>
