Sql 对于您实际使用的数据库，您最好对此进行规范化。像这样重复的组是一个巨大的危险信号，表明您的规范化不是最佳的。非常感谢您的删除。这是我不能不改变的旧DB。我被困在这里一天了！！！尝试一下UNPIVOT。我删除了不兼容的数据库标记。请用您实际使用的数据库进行标

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对于您实际使用的数据库，您最好对此进行规范化。像这样重复的组是一个巨大的危险信号，表明您的规范化不是最佳的。非常感谢您的删除。这是我不能不改变的旧DB。我被困在这里一天了！！！尝试一下UNPIVOT。我删除了不兼容的数据库标记。请用您实际使用的数据库进行标记。您最好对此进行规范化。像这样重复的组是一个巨大的危险信号，表明您的规范化不是最佳的。非常感谢您的删除。这是我不能不改变的旧DB。我被困在这里一天了！！！尝试一下UNPIVOT。（即使列的集合是完全静态的，对于数据来说，这是否是一种良好的关系形式仍然值得怀疑；如果没有更多的细节，就不能肯定，但假设结构是这样，答案应该是可行的。）您可以在这里尝试@Mark Adelsberger的答案：谢谢您的回答。但是，例如，如果tch_col_09和tch_col_10都有值，它们将在结果中的两个记录中显示。您的方式可能不可行。从示例中我们不清楚（a）两列是否可以为非0，或者（b）如果是，您希望在结果中得到什么。将更新为更通用的…（即使列集是完全静态的，对于数据来说这是否是一种良好的关系形式仍然值得怀疑；如果没有更多细节，就不能肯定，但假设结构是这样，答案应该是有效的。）您可以在这里尝试@Mark Adelsberger的答案：谢谢您的回答。但是，例如，如果tch_col_09和tch_col_10都有值，它们将在结果中的两个记录中显示。您的方式可能不可行。从示例中我们不清楚（a）两列是否可以为非0，或者（b）如果是，您希望在结果中得到什么。将更新为更通用的。。。

SELECT tch_function, tch_part, 9
  FROM your_table
 WHERE tch_col_09 <> 0
UNION ALL
SELECT tch_function, tch_part, 10
  FROM your_table
 WHERE tch_col_10 <> 0
-- you can see where this is going, right?
-- union in another select for each column

SELECT tch_function
     , tch_part
     , case when tch_col_09 <> 0 then 9
            when tch_col_10 <> 0 then 10
            when tch_col_11 <> 0 then 11
            when tch_col_12 <> 0 then 12
            when tch_col_13 <> 0 then 13
            when tch_col_14 <> 0 then 14
            when tch_col_15 <> 0 then 15
            when tch_col_16 <> 0 then 16
            when tch_col_17 <> 0 then 17
            when tch_col_18 <> 0 then 18
            else 19
       end as tch_col
  from your_table

SELECT tch_function,tch_part,9 AS tch_col FROM TCH WHERE tch_col_09 > 0
UNION
SELECT tch_function,tch_part,10 AS tch_col FROM TCH WHERE tch_col_10 > 0
UNION
SELECT tch_function,tch_part,11 AS tch_col FROM TCH WHERE tch_col_11 > 0
UNION
SELECT tch_function,tch_part,12 AS tch_col FROM TCH WHERE tch_col_12 > 0
UNION
SELECT tch_function,tch_part,13 AS tch_col FROM TCH WHERE tch_col_13 > 0
UNION
SELECT tch_function,tch_part,14 AS tch_col FROM TCH WHERE tch_col_14 > 0
UNION
SELECT tch_function,tch_part,15 AS tch_col FROM TCH WHERE tch_col_15 > 0
UNION
SELECT tch_function,tch_part,16 AS tch_col FROM TCH WHERE tch_col_16 > 0
UNION
SELECT tch_function,tch_part,17 AS tch_col FROM TCH WHERE tch_col_17 > 0
UNION
SELECT tch_function,tch_part,18 AS tch_col FROM TCH WHERE tch_col_18 > 0
UNION
SELECT tch_function,tch_part,19 AS tch_col FROM TCH 
WHERE tch_col_09 = 0 AND  tch_col_10 = 0 AND tch_col_11 = 0 
  AND tch_col_12 = 0 AND tch_col_13 = 0 AND tch_col_14 = 0
  AND tch_col_15 = 0 AND tch_col_16 = 0 AND tch_col_17 = 0
  AND tch_col_18 = 0
ORDER BY 1,2