Question

我有一个带有别名字段名称“ Status”的计算字段。该字段显示所有正确的数据。当我将此别名添加到ORDER BY子句时，别名无法识别。

SELECT ORG, PR, NOUN, Elapsed, Target_Days, Supportable_Date,
      (Target_Days - Elapsed) AS Status
FROM qry_Gate_Status
ORDER BY ORG, Supportable_Date, Status;

如何获取别名“状态”以与ORDER BY一起使用？

Answer 1

别名不能与ORDER BY一起使用。而是这样做：

SELECT ORG, PR, NOUN, Elapsed, Target_Days, Supportable_Date,
  (Target_Days - Elapsed) AS Status
FROM qry_Gate_Status
ORDER BY ORG, Supportable_Date, (Target_Days - Elapsed);

Answer 2

如果您不想重复代码，一个简单的解决方案可以基于子查询

select * from (
  SELECT ORG, PR, NOUN, Elapsed, Target_Days, Supportable_Date,
  (Target_Days - Elapsed) AS Status
  FROM qry_Gate_Status
) t
ORDER BY ORG, Supportable_Date, Status;

Answer 3

不幸的是，在Access SQL中无法识别别名。我使用了对我来说足够优雅的ORDER BY（列号）。

SELECT ORG, PR, NOUN, Elapsed, Target_Days, Supportable_Date,
      (Target_Days - Elapsed) AS Status
FROM qry_Gate_Status
ORDER BY ORG, Supportable_Date, 7;

ORDER无法识别别名

3 个答案: