waddtown, that SQL statement is missing the list of tables. I'm guessing you're using an altered version of /includes/classes/split_page_results.php. I recommend starting with the one that comes with Zen Cart. And then if your template requires some changes to that for some reason, work on fixing those requirements separately.
Perhaps rbarbour's post here might give you some additional insights: Making v154 DIY/Picaflor-Azul templates work with v1.5.5
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