EntityFramework 两个参数连续(中间有空格)问题

昨天在项目中,用到 EntityFramework 通过SQL语句查询。

具体的SQL语句如下:

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;

应该说这样没有问题的,但是查询一直报错:“Invalid GIS data provided to function st_geometryfromtext.”

换了多种传参方式,但是都还有问题。

经过各种调试、修改参数,大致可以确定是:两个参数是连续的,中间有空格,但是在参数替换后空格替换没了,导致数据格式出错。

再次调整下传的参数就可以,修改后SQL语句:

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;

对应的 point 是:

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

虽然知道了问题,也解决了,但是没有彻底解决这个问题。

有知道的可以告知下。

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转载自www.cnblogs.com/zhurong/p/9476077.html