EntityFramework 兩個參數連續（中間有空格）問題

昨天在項目中，用到 EntityFramework 通過SQL語句查詢。

具體的SQL語句如下：

SELECT
    t.*
FROM
    (
        SELECT
            c.id AS CommunityId,
            c.`name` AS CommunityName,
            ASTEXT(c.spatial_data) AS CommunitySpatialData,
            s.id AS StreetId,
            s.`name` AS StreetName,
            ASTEXT(s.spatial_data) AS StreetSpatialData,
            MBRContains (s.spatial_data ,ST_GeometryFromText('Point(@Longitude @Latitude)')) AS streetIn,
            MBRContains (c.spatial_data ,ST_GeometryFromText('Point(@Longitude @Latitude)')) AS communityIn
        FROM
            community c
        LEFT JOIN street s ON c.street_id = s.id
    ) AS t
WHERE
    t.streetIn = 1
AND t.communityIn = 1;

應該說這樣沒有問題的，但是查詢一直報錯：“Invalid GIS data provided to function st_geometryfromtext.”

換了多種傳參方式，但是都還有問題。

經過各種調試、修改參數，大致可以確定是：兩個參數是連續的，中間有空格，但是在參數替換后空格替換沒了，導致數據格式出錯。

再次調整下傳的參數就可以，修改后SQL語句：

SELECT
    t.*
FROM
    (
        SELECT
            c.id AS CommunityId,
            c.`name` AS CommunityName,
            ASTEXT(c.spatial_data) AS CommunitySpatialData,
            s.id AS StreetId,
            s.`name` AS StreetName,
            ASTEXT(s.spatial_data) AS StreetSpatialData,
            MBRContains (s.spatial_data ,ST_GeometryFromText(@point)) AS streetIn,
            MBRContains (c.spatial_data ,ST_GeometryFromText(@point)) AS communityIn
        FROM
            community c
        LEFT JOIN street s ON c.street_id = s.id
    ) AS t
WHERE
    t.streetIn = 1
AND t.communityIn = 1;

對應的 point 是：

string point = "Point(" + Longitude + " " + Latitude + ")";

雖然知道了問題，也解決了，但是沒有徹底解決這個問題。

有知道的可以告知下。

 

注意：

1、對於面數據：最后一個點應該是第一個點，這樣在入庫的時候才正確，否則報錯“Invalid GIS data provided to function st_geometryfromtext.”