Question

好的，早些时候我试图使用我在SQL中正常使用的查询来获取每个'Facility Code'/'Order Number'配对的最低值'OP'。这包含在下面显示的联合查询的下半部分。

Dim Query As String = "SELECT [Facility Code],[Mach],[Part Number],[Part Name],[Order No#],[OP],[Status],[Order Qty],[Qty Comp]," & _
                                 "[Mfg Due Date],[Planner],[Standard efficiency],[TBC ],[Std run labor time],[Std mach time],[Std setup hrs] " & _
                                 "From [" & sheetName & "] WHERE [Facility Code] LIKE 'R%' " & _
                          "UNION " & _
                                  "SELECT m.[Facility Code],m.[Mach],m.[Part Number],m.[Part Name],m.[Order No#],m.[OP],m.[Status],m.[Order Qty],m.[Qty Comp]," & _
                                         "m.[Mfg Due Date],m.[Planner],m.[Standard efficiency],m.[TBC ],m.[Std run labor time],m.[Std mach time],m.[Std setup hrs] " & _
                                  "FROM " & _
                                  "(SELECT s.[Facility Code],s.[Mach],s.[Part Number],s.[Part Name],s.[Order No#],s.[OP],s.[Status],s.[Order Qty],s.[Qty Comp]," & _
                                         "s.[Mfg Due Date],s.[Planner],s.[Standard efficiency],s.[TBC],s.[Std run labor time],s.[Std mach time],s.[Std setup hrs], " & _
                                         "row_number() over(partition by s.[Facility Code],s.[Order No#] ORDER BY s.[OP] asc) as rn " & _
                                  "FROM [" & sheetName & "] s " & _
                                  "WHERE s.[Facility Code] LIKE 'J%' ) m " & _
                                  "WHERE m.rn =1 "

我的问题是这是从Excel电子表格中读取而失败。在进行一些谷歌搜索后，我认为row_number（）命令不兼容。

我需要在没有它的情况下完成相同的输出，我尝试对记录进行分组，但此查询也失败了。由于“group by”中没有的字段不是聚合函数，我收到错误。

Dim Query As String = "SELECT [Facility Code],[Mach],[Part Number],[Part Name],[Order No#],[OP],[Status],[Order Qty],[Qty Comp]," & _
                                 "[Mfg Due Date],[Planner],[Standard efficiency],[TBC],[Std run labor time],[Std mach time],[Std setup hrs] " & _
                                 "From [" & sheetName & "] WHERE [Facility Code] LIKE 'R%' " & _
                          "UNION " & _
                          "SELECT [Facility Code],[Mach],[Part Number],[Part Name],[Order No#],[OP],[Status],[Order Qty],[Qty Comp]," & _
                                 "[Mfg Due Date],[Planner],[Standard efficiency],[TBC],[Std run labor time],[Std mach time],[Std setup hrs] " & _
                                 "From [" & sheetName & "] WHERE [Facility Code] LIKE 'J%' " & _
                                 "GROUP BY [Facility Code],[Order No#] ORDER BY [Facility Code],[Order No#],[OP] asc"

任何帮助都会有所帮助，提前谢谢！

Answer 1

如果你想使用一个不在GROUP BY中的字段，你必须使用函数FIRST。

SELECT FIRST(a) FROM tbl GROUP BY b;

当然，如果你有一个不同的内部值，它只需要第一个。扔掉所有其他人。我不知道数据，因此我不知道这是否是一个问题。

使用row_number（）转换SQL查询以与Excel OLEDB查询兼容

1 个答案: