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| pole s hodnotou Null (" A field containing a Null value. A null field isn't the same as a field that contains a zero-length string (" ") or a field with a value of 0."); prázdné pole (" A field containing a Null value. A null field isn't the same as a field that contains a zero-length string (" ") or a field with a value of 0.") | |||
