SSIS:Oracle 多行到一列输出，无需 STRAGG [英] SSIS: Oracle Multiple rows to one column output without STRAGG

问题描述

希望在 ID 相同时生成逗号分隔的语言列表.

Looking to generate a comma separated list of languages when the ID is the same.

表 1:

ID | LangID
1    1
1    2
1    3
2    3
2    4
3    1

表 2:

ID | Language
1    English
2    Spanish
3    French
4    German

想要生成如下所示的结果:

Want to generate results that look like:

ID | Languages
1    English, Spanish, French
2    French, German
3    English

我尝试过的事情:

Stragg - SSIS 给我无效标识符"

Stragg - SSIS gives me "Invalid Identifier"

SYS_Connect_By_Path - 不知道如何加入 id 以转换为字符串语言.

SYS_Connect_By_Path - Can't figure out how to join the ids to convert to the string languages.

有什么建议吗?

推荐答案

有多种方法可以执行字符串聚合以生成逗号分隔列表 - 请参阅 此链接了解更多详情.根据链接中的示例，尝试:

There are various ways to perform string aggregation to produce a comma separated list - see this link for more details. Based on the example in the link, try:

SELECT x.id,
       LTRIM(MAX(SYS_CONNECT_BY_PATH(x.language,','))
       KEEP (DENSE_RANK LAST ORDER BY curr),',') AS employees
  FROM (SELECT a.id,
               b.language,
               ROW_NUMBER() OVER (PARTITION BY a.id ORDER BY b.language) AS curr,
               ROW_NUMBER() OVER (PARTITION BY a.id ORDER BY b.language) -1 AS prev
          FROM TABLE_1 a
          JOIN TABLE_2 b ON b.id = a.langid) x
GROUP BY x.id
CONNECT BY prev = PRIOR curr AND x.id = PRIOR x.id
START WITH curr = 1;

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