PHP test null.php

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Hostname	obol602
uname -a	Linux obol602 2.6.31-15-generic #50-Ubuntu SMP Tue Nov 10 14:53:52 UTC 2009 x86_64 GNU/Linux
date	2009-11-27

SELECT top 1 * FROM #MyTable WHERE n = 1 -- '' -> (Empty String)
SELECT top 1 * FROM #MyTable WHERE n = 2 -- NULL -> (NULL)
SELECT top 1 * FROM #MyTable WHERE n = 3 -- ' ' -> ' '
SELECT top 1 * FROM #MyTable WHERE n = 4 -- 'a' -> 'a'

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