Question

I’m trying to display results for that match a specific timeframe – which works fine. However, I wanted to add a clause that would say that the results shown must be either party_type 1 or 2.

So I did this

WHERE start_datetime >= '$DATE_START_SELECTED'
AND end_datetime < '$DATE_END_SELECTED' 
AND PARTY_TYPE='1'
OR PARTY_TYPE='2'
GROUP BY events.ENTRANCE_PRICE

But now it’s showing some additional events from yesterday… What’s interesting though, is that it’s not showing any events that are further back.

Answer 1

This should do the trick

WHERE start_datetime >= '$DATE_START_SELECTED'
AND end_datetime < '$DATE_END_SELECTED' 
AND (PARTY_TYPE='1'
OR PARTY_TYPE='2')
GROUP BY events.ENTRANCE_PRICE

Slightly cleaner version of whole thing would be

WHERE start_datetime >= '$DATE_START_SELECTED'
AND end_datetime < '$DATE_END_SELECTED' 
AND (PARTY_TYPE IN (1,2))
GROUP BY events.ENTRANCE_PRICE

You might also want to check out here to learn more about using Multiple WHERE conditions.