列名作为INSERT语句中的参数

Question

我想创建一个存储过程,我想在表中插入值.但我不知道在哪个字段中我必须插入值,并且在 运行时我将决定应该在哪个字段中插入值.我想做的是

insert into Tablename(@ColumnName, Description) 
values (@ColumnValue, @MH_Description)

我可以在存储过程中传递这种类型的参数,如上例所示??

我也想使用条件

声明@Query nvarchar(4000)声明@Query1 nvarchar(4000)声明@ParmDefinition nvarchar(500);

set @Query = '
    insert into tbl_temp(' + quotename(@ColumnName) +',Description)

    values (@ColumnValue, @Description)'
    set @Query1 = '
    update tbl_temp set' + quotename(@ColumnName) +'=@ColumnValue, Description=@Description'
set @ParmDefinition = N'@ColumnValue varchar(100),@Description varchar(100)'
if exists(select 'true' from tbl_temp where quotename(@ColumnName)=@ColumnValue)
begin         
  exec sp_executesql @Query1, @ParmDefinition, @ColumnValue = @ColumnValue, @Description = @Description
end
else 
begin      exec sp_executesql @Query, @ParmDefinition, @ColumnValue= @ColumnValue, @Description = @Description
end

我究竟做错了什么？

Answer 1

这不可能与参数有关.您需要构建动态查询才能实现此目的.

使用动态SQL的proc看起来像这样:

create procedure MyProc
(
    @ColumnName varchar(100),
    @ColumnValue varchar(100),
    @MH_Description varchar(100)
)
as
begin
    declare @Query nvarchar(4000)
    declare @ParmDefinition nvarchar(500);

    set @Query = '
        insert into Tablename(' + quotename(@ColumnName) +',Description) 
        values (@ColumnValue, @MH_Description)'
    set @ParmDefinition = N'@ColumnValue varchar(100), @MH_Description varchar(100)'
    exec sp_executesql @Query, @ParmDefinition, @ColumnValue = @ColumnValue, @MH_Description = @MH_Description
end

[编辑]回答你的第二个问题.将其设为一个查询而不是两个

set @Query = '
    if exists(select * from tbl_temp where '+quotename(@ColumnName)+' = @ColumnValue)
        update tbl_temp set' + quotename(@ColumnName) +' = @ColumnValue, Description=@Description
    else        
        insert into tbl_temp(' + quotename(@ColumnName) +',Description)
    values (@ColumnValue, @Description)'