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Answer: Why does my query work on the command line, but fail in my browser?

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Q&A > database programming > Why does my query work on the command line, but fail in my browser? - Answer contributed by CMonster

Whoopsie! Be wary of quoting NULLs. The program listing has $dbh->quote("NULL"); but that gives 'NULL', or the string NULL, rather than the empty value NULL. To get the latter, use $dbh->quote(undef); ...which works just fine if quoting a variable; you get a quoted string when it contains a value, and NULL when it's undef.

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