Question

select distinct vtw.lastname, vtw.firstname, vtw.dob, vtw.clubnumber, vtw.tournamentname, vtw.BossTournamentID, vtw.tournamentdatetime, vtw.tournamentid, tp.tournamentprizeid, tp.status, tp.place, p.prizeid,p.prizename, tp.bRedeemed, tp.CouponNumber

from vwTournamentWinners vtw, tournamentprizes tp, prizes p

where vtw.fk_tournamentid=tp.fk_tournamentid and vtw.fk_playerid=tp.fk_winnerid and tp.fk_prizeid=p.prizeid and vtw.tournamentdatetime between '8/10/2013' and '8/10/2013' and tp.status='Available'

UNION

SELECT BossID, Status, CouponNumber, FK_PrizeID, FK_WinnerID, PrizeName, FirstName, LastName, DOB 
FROM BountyPrizes, Prizes, Players
where Prizes.PrizeID=BountyPrizes.FK_PrizeID and Players.PlayerID=BountyPrizes.FK_WinnerID

order by vtw.tournamentdatetime DESC

错误讯息：

Msg 205，Level 16，State 1，Line 1 使用UNION，INTERSECT或EXCEPT运算符组合的所有查询在目标列表中必须具有相同数量的表达式。

注意：两个查询都是单独的。我希望gridview显示一个无法填充列的空白字符串.Chris。

Answer 1

将第二个select语句更改为：

SELECT BossID, Status, CouponNumber, FK_PrizeID, FK_WinnerID, PrizeName, FirstName, LastName, DOB , '', '' , '', '', '', ''

确保两个查询都返回相同数量的字段

Answer 2

选择不同的vtw.lastname，vtw.firstname，vtw.dob，vtw.clubnumber，vtw.tournamentname，vtw.BossTournamentID，vtw.tournamentdatetime，vtw.tournamentid，tp.tournamentprizeid，tp.status，tp.place，p .prizeid，p.prizename，tp.bRedeemed，tp.CouponNumber，NULL

来自vwTournamentWinners vtw，tournamentprizes tp，prizes p

其中vtw.fk_tournamentid = tp.fk_tournamentid和vtw.fk_playerid = tp.fk_winnerid和tp.fk_prizeid = p.prizeid和vtw.tournamentdatetime介于'8/10/2013'和'8/10/2013'之间和tp。状态= '有空'

UNION

SELECT LastName，FirstName，DOB，NULL，NULL，BossID，NULL，NULL，NULL，Status，NULL，FK_PrizeID， PrizeName，bRedeemed，CouponNumber，FK_WinnerID

FROM BountyPrizes，Prizes，Players 其中Prizes.PrizeID = BountyPrizes.FK_PrizeID和Players.PlayerID = BountyPrizes.FK_WinnerID

按vtw.tournamentdatetime DESC命令

尝试从不同的表中选择行

2 个答案: