Message in Czech (Čeština)![](/img/flags/cs.png)
Identifikátor <var>X</var> není platný, protože není obsažen ve funkci agregace ani v klauzuli GROUP BY.
Unlocalized message![](/img/flags/en.png)
The identifier '<var>X</var>' is not valid because it is not contained either in an aggregate function or in the GROUP BY clause.
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