SQL竖表转横表Json数据

1.数据准备

create  table  Vertical(
  Id  int ,
  ProjectName varchar(20),
  ProjectValue int
)

insert into  Vertical  values (101,'旅游',100)
insert into  Vertical  values (101,'牧业',101)
insert into  Vertical  values (101,'工业',102)
insert into  Vertical  values (101,'软件',103)
insert into  Vertical  values (102,'旅游',200)
insert into  Vertical  values (102,'牧业',201)
insert into  Vertical  values (102,'工业',202)
insert into  Vertical  values (102,'软件',203)

select *from  Vertical

--返回格式：

[{'Id':'101','旅游':'100','牧业':'101','工业':'102','软件':'103'},{'Id':'102','旅游':'200','牧业':'201','工业':'202','软件':'203'}]

Create  proc VerticaltoHorizontal
 @tbname varchar(20),
 @returnmsg varchar(1000) out
 as
   begin
   declare @id int
   declare @name varchar(20)
   declare @value int
   declare @strjson varchar(1000)
   declare @idintentity int =0
       declare  v2h  cursor
       for select  id,ProjectName,projectvalue from vertical
       open v2h
       fetch v2h into  @id,@name,@value
       while @@FETCH_STATUS=0
         begin
          if(@idintentity=0)
            set @strjson='{''Id'':'''+CAST(@id as varchar(10))+''','''+@name+''':'''+CAST(@value as varchar(10))+''''
          else
             begin
               if (@idintentity= @id)
                 begin
                 set @strjson=@strjson+','''+@name+''':'''+CAST(@value as varchar(10))+''''
                 end
               else
                begin
                 set @strjson =@strjson+'},'
                 set @strjson=@strjson+'{''Id'':'''+CAST(@id as varchar(10))+''','''+@name+''':'''+CAST(@value as varchar(10))+''''
                end
             end
          set @idintentity= @id
          fetch v2h into  @id,@name,@value
         end
      close v2h
      deallocate  v2h
     set  @returnmsg  ='['+ @strjson+'}]'
   end
go

备注：竖转横 的表的实例很多，我建议还是在程序中处理比较好