mysq Point類型 查詢和插入操作：insert和select

首先，創建一個表名為geometry2的表，然后增加一個名為gemo的point類型的字段。

 

insert方法有4中，例如以下所看到的：
//================================================================//
INSERT INTO `geometry2`.`gemo` VALUES(GeomFromText('POINT(1 1)'));

//================================================================//
INSERT INTO `geometry2`.`gemo` VALUES(PointFromText('POINT(1 1)'));

//================================================================//
SET @g = 'POINT(1 1)';
INSERT INTO `geometry2`.`gemo` VALUES(GeomFromText(@g));

//================================================================//
SET @g = GeomFromText('POINT(1 1)');
INSERT INTO `geometry2`.`gemo` VALUES(@g);

 

 

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假設僅僅是用select(*) from gemo，select出來的結果會是亂碼···

要想看到非亂碼數據，用以下這個方法
//================================================================//
SELECT AsText(pos) FROM `geometry2`.`gemo`;

 

可得例如以下格式的數據：

mysql空間類型：Point類型的insert和select - Mooner - 楚天空闊歌聲長

 

另附mysql官方站點的手冊：

http://dev.mysql.com/doc/refman/5.1/zh/spatial-extensions-in-mysql.html