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SQL WHILE – SQL For Programmers

The IF statement we looked at on Tuesday was pretty tame compared to the WHILE construct.

Actually, the main thing you need to keep in mind is that WHILE is all you have.  There is no such thing as a FOR loop or a DO WHILE loop.  So, you have to force WHILE to do those for you.

The basic syntax of WHILE looks like this:

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SQL For Programmers – Finding a String

tp_vol3_025 Many times in our queries, we aren’t looking for an exact match.  We are looking for one string that exists in another.  There are a couple statements available to us that will allow us to do this.

The first of these is the LIKE statement, and if you are familiar with DOS or the Linux equivalent, this should look familiar to you.

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