Declare field as a variable in SQL

Question

I decalred one field as a variable and i am trying to execute the query. but it throwing error. what is the correct way to pass the variable.
Msg 170, Level 15, State 1, Line 3
Line 3: Incorrect syntax near 'g'.
declare
@Query
as
varchar(3000),
@price_type
as
varchar(50)
set
@price_type =
'g.nHighPrice'
set
@Query =
'SELECT top 2 g.tPriceDescID as price_desc_id , e.tName as price_type_name
       ,g.tEffectiveDate as effective_date '
+ @price_type+'
       ,g.nMidPrice as mid_price, a.tpricename as price_comment
       ,g.nPostingPrice  as posting_price
       FROM  MdPriceDesc a
      inner join  Company b on a.yPublishCompanyID=b.yOid
      inner join Commodity c on a.yPublishCommodityID = c.yOid
      inner join Location d on a.yLocationID=d.yOid
      inner join MdPriceType e on a.yPriceTypeID = e.yOid
inner join MDR.dbo.MdPriceDetail g on g.tPriceDescID=a.tPriceDescID
execute(@Query)

Answer 1

There is an error with your script..
@Query =
'SELECT top 2 g.tPriceDescID as price_desc_id , e.tName as price_type_name
       ,g.tEffectiveDate as effective_date '
+ @price_type+'
you are missing a comma (,) '...as effective_date, '
Please click "Mark As Answer" if my post helped. Tony C.