如何在一個結果集中組合兩個查詢的結果

Question

我有一個名為'rating'的表，它有兩個字段'cab_id'和'rating'，它存儲cab的id及其等級為1或0.我希望將值作為向上或向下檢索為計數總和為1或0我使用了兩個查詢

      (SELECT count(rating) as up FROM 

     `rating` WHERE cab_id=101 and rating=1 )

和

     (SELECT count(rating) as down FROM 

     `rating` WHERE cab_id=101 and rating=0 )

我想以一個結果的格式檢索。

         ----------
      up          down

         ----------


       1             2         


        ----------

請在這里幫忙！

Answer 1

SELECT
    SUM(IF(rating=1,1,0)) up,
    SUM(IF(rating=0,1,0)) down
FROM rating
WHERE cab_id=101