It's typical for a column called "id" (or "Id") to be the primary key field of the given table, so grouping by Id would be even more silly than using an "order by" clause on a query that returns just one row.

Also, in the case of mysql, an "order by" clause can refer to any column in the table being queried, regardless whether that column is used in any way elsewhere in the query.

So while it's true that the OP should remove the unnecessary "order by" clause, having it in there is a harmless mistake in this case.

In reply to Re^2: Perl/Tk freezes while waiting the data to arrive on mysql server by graff
in thread Perl/Tk freezes while waiting the data to arrive on mysql server by Muskovitz

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