I’m reading a book about SQL. In that book there’s the term Ad Hoc Query, which I don’t understand.
What exactly is an ad hoc query?
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Ad hoc is latin for “for this purpose”. You might call it an “on the fly” query, or a “just so” query. It’s the kind of SQL query you just loosely type out where you need it
…which is an entirely different query each time that line of code is executed, depending on the value of
myId. The opposite of an ad hoc query is a predefined query such as a Stored Procedure, where you have created a single query for the entire generalized purpose of selecting from that table (say), and pass the ID as a variable.