What is the difference between pg_query and pg_execute?

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I'm new to Postgre and I see pg_query and pg_execute in the application I'm working on, but I can not see any difference between the two. I have to do an insert and I'm not sure which one to use.

What is the difference between the two and which is the best or the most agile?

    
asked by anonymous 27.08.2014 / 17:57