Question

我在MSSQL中遇到一个难以运行的'SUM'语法，这个连接服务器（PostgreSQL）是通过ODBC驱动程序创建的连接。

如果我只检索数据，则没有任何问题，

select * from OpenQuery([192.168.1.145],'
    select party_code, amount_forex from biv_so_main
')

如果我尝试对值求和，则会抛出错误，

select * from OpenQuery([192.168.1.145],'
    select party_code, sum(amount_forex) from biv_so_main group by party_code
')

错误消息

The OLE DB provider "MSDASQL" for linked server "192.168.1.145" supplied inconsistent metadata for a column. The column "sum" (compile-time ordinal 2) of object " select party_code, sum(amount_forex) from biv_so_main group by party_code " was reported to have a "SCALE" of 6 at compile time and 2 at run time.

我google了很多，似乎没有人像我一样有问题，任何人都可以帮忙吗？

感谢。

Answer 1

为sum列添加一个别名并转换为数据类型（对于任何类型的amount_forex）。

select * from OpenQuery([192.168.1.145],'
    select party_code
         , sum(amount_forex)::int amount_forex_sum 
    from biv_so_main group by party_code
')

MSSQL链接服务器为列提供了不一致的元数据

1 个答案: