Question

我试图将不同的行合并为一个，因为它们在Microsoft sql中具有相同的id但不同的列值。我找到了关于相同需求的讨论，但在oracle中看到link

中创建了表格

例如，我有

UserId  WorkGroup

Bill    PC-money
Bill    PC-windows
Linus   PC-free
Linus   PC-open

我想看看

UserId  WorkGroup1 WorkGroup2
Bill    PC-money   PC-windows
Linus   PC-free    PC-open

我对microsoft sql的访问权限是只读的

感谢您的想法

Answer 1

 SELECT USERID, 
 SUBSTRING_INDEX(SUBSTRING_INDEX(GROUP_CONCAT(WORKGROUP), ',', 1), ',', -1) AS WORKGROUP1,
 if(length(GROUP_CONCAT(WORKGROUP)) - length(replace(GROUP_CONCAT(WORKGROUP), ',', ''))>=1,  
       SUBSTRING_INDEX(SUBSTRING_INDEX(GROUP_CONCAT(WORKGROUP), ',', 2), ',', -1) ,
       NULL)WORKGROUP2 
FROM MyTable1
GROUP BY USERID;

您可以在此处查看SQL Fiddle Demo。

考虑到每个USERID都有两个条目，您可以尝试以上查询。

Answer 2

:compileDebugJavaWithJavac - is not incremental (e.g. outputs have changed, no 

previous execution, etc.).
file or directory '/tmp/build4365298428607247775xxx/Main/src/debug/java', not found
Compiling with JDK Java compiler API.
/tmp/build4365298428607247775xxx/Main/src/main/java/com/<hidden this package name for privacy>/salestraining/MainStub.java:176: error: cannot find symbol
        Display.getInstance().callSerially(new Runnable() { public void run() {i.destroy();} });
                                                                                ^
  symbol:   method destroy()
  location: variable i of type Main
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error
:compileDebugJavaWithJavac FAILED
:compileDebugJavaWithJavac (Thread[Daemon worker,5,main]) completed. Took 7.165 secs.

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

SQL合并Microsoft SQL

2 个答案: