如何將我所做的另一個查詢結果添加到結果中（SQL）

Question

嗨，我有這個問題這對你來說很簡單，但由於我的英語不好，我無法找到如何修復我的代碼:((

這是我做的查詢

SELECT  
  ESCC,
  count(if(DRC =156, DRC,NULL)) AS 'A',
  count(if(DRC =159, DRC,NULL)) AS 'B',
  count(if(DRC =160, DRC,NULL)) AS 'C'
FROM diag_results WHERE diagOrder=1 GROUP BY ESCC;

上面的查詢產生以下結果。

+------+----+----+----+
| ESCC | A  | B  | C  |
+------+----+----+----+
|    1 | 32 | 21 | 92 |
+------+----+----+----+
|    2 | 21 | 33 | 52 |
+------+----+----+----+
...

但我想將波紋管查詢的另一個結果作為列添加到上述結果中

SELECT  
  count(if(DRC =156, DRC,NULL)) AS 'D',
  count(if(DRC =159, DRC,NULL)) AS 'E',
  count(if(DRC =160, DRC,NULL)) AS 'F'
FROM diag_results WHERE diagOrder=2 GROUP BY ESCC;

結果

+----+----+----+
| D  | E  | F  |
+----+----+----+
| 32 | 21 | 92 |
+----+----+----+
| 21 | 33 | 52 |
+----+----+----+
...

所以我想得到這樣的結果

+------+----+----+----+----+----+----+
| ESCC | A  | B  | C  | D  | E  | F  |
+------+----+----+----+----+----+----+
|    1 | 32 | 21 | 92 | 32 | 21 | 92 |
+------+----+----+----+----+----+----+
|    2 | 21 | 33 | 52 | 21 | 33 | 52 |
+------+----+----+----+----+----+----+

請回答我

Answer 1

你不需要count(if())來做你想做的事。 使用sum()簡單得多，如下所示：

SELECT ESCC,
       sum(diagOrder = 1 and DRC = 156) AS A,
       sum(diagOrder = 1 and DRC = 159) AS B,
       sum(diagOrder = 1 and DRC = 160) AS C,
       sum(diagOrder = 2 and DRC = 156) AS D,
       sum(diagOrder = 2 and DRC = 159) AS E,
       sum(diagOrder = 2 and DRC = 160) AS F
FROM diag_results
WHERE diagOrder IN (1, 2) 
GROUP BY ESCC;

我還強烈建議您不要對列別名使用單引號。 僅對字符串和日期/時間常量使用單引號。

Answer 2

SELECT  
  ESCC,
  count(if(diagOrder = 1 AND DRC =156, DRC,NULL)) AS 'A',
  count(if(diagOrder = 1 AND DRC =159, DRC,NULL)) AS 'B',
  count(if(diagOrder = 1 AND DRC =160, DRC,NULL)) AS 'C',
  count(if(diagOrder = 2 AND DRC =156, DRC,NULL)) AS 'D',
  count(if(diagOrder = 2 AND DRC =159, DRC,NULL)) AS 'E',
  count(if(diagOrder = 2 AND DRC =160, DRC,NULL)) AS 'F'
FROM diag_results WHERE diagOrder IN (1, 2) 
GROUP BY ESCC;