Your results do not come out in the order you expect because you are doing multiple queries in arbitrary order. You are doing one query for each value in %expal.
It is not the same thing to do this:
SELECT * FROM foo WHERE expal = 5 ORDER BY expal;
SELECT * FROM foo WHERE expal = 3 ORDER BY expal;
SELECT * FROM foo WHERE expal = 2 ORDER BY expal;
SELECT * FROM foo WHERE expal = 4 ORDER BY expal;
SELECT * FROM foo WHERE expal = 1 ORDER BY expal;
as it is to do
SELECT * FROM foo WHERE expal IN (5,3,2,4,1) ORDER BY expal;
Your code is effectively doing the former. You seem to want it to do the latter.
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