comment on

Maybe having no table confuses the system?

It should not. Executing a table-less query like

SELECT 42 AS result
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works on most SQL databases. The remaining ones, Oracle being probably the most known example, always expects a dummy table or view, but also always provides that dummy table or view specifically for this purpose. Its name is DUAL on Oracle, and you need to use

SELECT 42 AS result FROM dual
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on Oracle. Some databases also provide a table or view named DUAL just for Oracle compatibility.

See Wikipedia: DUAL table for a nice overview.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^2: fetchall_arrayref hangs with placeholders query with no results by afoken
in thread fetchall_arrayref hangs with placeholders query with no results by TieUpYourCamel

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