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If I, for example, have a real simple query:
SELECT 1
UNION ALL
SELECT 2
and then fetch rows via Perl or PHP – would I have “1” as a FIRST row, and “2” as a SECOND? Is this behaviour described anywhere?..
Thanx
There’s no default order, not in tables and not in queries, unless you specify an explicit order with ORDER BY.
You would probably have 1 as first row, and 2 as second, but it’s not default behaviour and it’s not described anywhere. It’s just coincidence!