我試圖計數以下查詢組合:合併兩個MySQL COUNT(*)的結果,不同的列
SELECT recipient AS otheruser, COUNT(*)
FROM privatemessages
WHERE sender = '$userid'
GROUP BY recipient
SELECT sender AS otheruser, COUNT(*)
FROM privatemessages
WHERE recipient = '$userid'
GROUP BY sender
如果有反正這兩個查詢結合起來,並添加COUNT(*)共同爲每個 'otheruser'
你可以試試聯合國離子不知道,如果你正在尋找 –
通過「結合計數」我想你想添加「計數」的數字在一起?或者我錯了,你只是想結合查詢?如果您所要做的只是將COUNT的值加在一起,那麼在查詢調用後只需將它們相加即可。 –