私はSQL Server 2008データベースを実行しています.Webアプリで次のクエリを使用していますが、エラーをデバッグするために、管理スタジオでクエリを直接実行しています.
次のエラーが表示されます - 無効な浮動小数点演算が発生しました。このクエリを実行するとき。
select p.Id as Id, p.CatId as CatId, p.MetaName as MetaName ,p.Active as Active,p.HasChildren as HasChildren ,p.Mlevel as Mlevel ,p.ParentId as ParentId ,p.Type as Type, p.VOrder as VOrder, p.UrlOrder as UrlOrder, Count('*') as VCount
from MetaDataValues as m
left join MetaData as p on m.MetaDataId = p.Id
left join Adverts as a on m.AdvertId = a.Id
where a.Status = 1
and a.ExpDate > current_timestamp and
m.AdvertId in
(select m2.AdvertId from MetaDataValues as m2 left join MetaData as p2 on m2.MetaDataId = p2.Id where p2.MetaName = 'meta1'
and m.AdvertId in (select m3.AdvertId from MetaDataValues as m3 left join MetaData as p3 on m3.MetaDataId = p3.Id where p3.MetaName = 'meta2'
and m.AdvertId in (select m4.AdvertId from MetaDataValues as m4 left join MetaData as p4 on m4.MetaDataId = p4.Id where p4.MetaName = 'meta3'
and m.AdvertId in (select ad9.Id from Adverts as ad9 where dbo.GetDist(ad9.X,ad9.Y,ad9.Z,52.9131514,-2.9313405) < 969))))
group by p.Id, p.CatId, p.MetaName,p.Active,p.HasChildren,p.Mlevel,p.ParentId,p.Type, p.VOrder, p.UrlOrder
問題の原因となっている GetDist 関数を説明するには、これをサブクエリで最上位に移動すると、クエリは正常に実行されますか?? このクエリを構築するコードは特定の方法でコーディングされており、変更したくないため、これは理想的ではありません。これが機能するクエリです。まったく同じですが、順序が異なります。
select p.Id as Id, p.CatId as CatId, p.MetaName as MetaName ,p.Active as Active,p.HasChildren as HasChildren ,p.Mlevel as Mlevel ,p.ParentId as ParentId ,p.Type as Type, p.VOrder as VOrder, p.UrlOrder as UrlOrder, Count('*') as VCount
from MetaDataValues as m
left join MetaData as p on m.MetaDataId = p.Id
left join Adverts as a on m.AdvertId = a.Id
where a.Status = 1
and a.ExpDate > current_timestamp and
m.AdvertId in
(select m2.AdvertId from MetaDataValues as m2 left join MetaData as p2 on m2.MetaDataId = p2.Id where p2.MetaName = 'meta1'
and m.AdvertId in (select ad9.Id from Adverts as ad9 where dbo.GetDist(ad9.X,ad9.Y,ad9.Z,52.9131514,-2.9313405) < 969)
and m.AdvertId in (select m3.AdvertId from MetaDataValues as m3 left join MetaData as p3 on m3.MetaDataId = p3.Id where p3.MetaName = 'meta2'
and m.AdvertId in (select m4.AdvertId from MetaDataValues as m4 left join MetaData as p4 on m4.MetaDataId = p4.Id where p4.MetaName = 'meta3' )))
group by p.Id, p.CatId, p.MetaName,p.Active,p.HasChildren,p.Mlevel,p.ParentId,p.Type, p.VOrder, p.UrlOrder
GetDist code
USE [MVC]
GO
/****** Object: UserDefinedFunction [dbo].[GetDist] Script Date: 02/20/2013 17:05:00 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER FUNCTION [dbo].[GetDist]
(
@xaxis float,
@yaxis float,
@zaxis float,
@CenterLat float,
@CenterLon float
)
RETURNS float
AS
BEGIN
declare @CntXAxis float
declare @CntYAxis float
declare @CntZAxis float
declare @EarthRadius float
set @EarthRadius = 3961
set @CntXAxis = cos(radians(@CenterLat)) * cos(radians(@CenterLon))
set @CntYAxis = cos(radians(@CenterLat)) * sin(radians(@CenterLon))
set @CntZAxis = sin(radians(@CenterLat))
return (@EarthRadius * acos( @XAxis*@CntXAxis + @YAxis*@CntYAxis + @ZAxis*@CntZAxis))
END