Cocatenate列唯一

Question

原始表：

======================================================================================= 
| A |  B |  C  |  D  |  E  |  F  |  G  | 
======================================================================================= 
| 65432 | AFD452E | sometext1 | IA1  | 10,6 | 8,5  | 22,0 | 
| 65432 | AFD452E | sometext1 | IA2  |   | 11,4  | 16,5 | 
| 65432 | AFD452E | sometext1 | IA3  |   | 3,5  | 5,3 | 
| 65989 | 74652E | sometext2 | IA1  | 3,3  |    |  8  | 
| 65989 | 74652E | sometext2 | IA3  | 23  |  1,1  | 6,9 | 
| 27890 | P8965A | sometext3 | IA3  | 12,7 |  13,8 | 33,2 | 
======================================================================================= 

结果表应该是：

======================================================================================= 
| A |  B |  C  |  NEWA1  |  NEWA2  |  NEWA3  | 
======================================================================================= 
| 65432 | AFD452E | sometext1 | 10,6-8,5-22,0-| -11,4-16,5- |     | 
| 65989 | 74652E | sometext2 | 3,3--8-  |    | 23-1,1-6,9- | 
| 27890 | P8965A | sometext3 |    |    | 12,7-13,8-33,2- | 
======================================================================================= 

这就是我想出了这么远，但它确实没有做的工作：

SELECT DISTINCT [A], [B], [C], 
    IIF([D] LIKE "IA1", IIF(ISNULL([E]), '-', [E] + '-') + IIF(ISNULL([F]), '-', [F] + '-') + IIF(ISNULL([G]), '-', [G] + '-') , ‘’) AS NEWIA1, 
    IIF([D] LIKE "IA2", IIF(ISNULL([E]), '-', [E] + '-') + IIF(ISNULL([F]), '-', [F] + '-') + IIF(ISNULL([G]), '-', [G] + '-') , ‘’) AS NEWIA2, 
    IIF([D] LIKE "IA3", IIF(ISNULL([E]), '-', [E] + '-') + IIF(ISNULL([F]), '-', [F] + '-') + IIF(ISNULL([G]), '-', [G] + '-') , ‘’) AS NEWIA3 
    FROM TABLE; 

这是我想出了我的查询：

======================================================================================= 
| A |  B |  C  |  NEWA1  |  NEWA2  |  NEWA3  | 
======================================================================================= 
| 65432 | AFD452E | sometext1 | 10,6-8,5-22,0-|    |     | 
| 65432 | AFD452E | sometext1 |    | -11,4-16,5- |     | 
| 65432 | AFD452E | sometext1 |    |    | -11,4-16,5- | 
| 65989 | 74652E | sometext2 | 3,3--8-  |    |     | 
| 65989 | 74652E | sometext2 |    |    | 23-1,1-6,9- | 
| 27890 | P8965A | sometext3 |    |    | 12,7-13,8-33,2- | 
======================================================================================= 

Answer 1

试着这么做：

select A, B, C, 
max(iif([D] like "1A1" .. rest of code)) as newa1, 
e ... 
from table 
group by A, B. c; 

一旦你设置了行，你可以包装它们的子查询中，并修剪多余连字符。