July 2023
Intermediate to advanced
278 pages
5h 40m
Chinese
Content preview from Trino 权威指南：原书第2版
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190
|
第
9
章
Trino
支持众多的构造器从数据源处来创建地理空间对象：
•
ST_GeometryFromText(varchar) -> Geometry
•
ST_GeomFromBinary(varbinary) -> Geometry
•
ST_LineFromText(varchar) -> LineString
•
ST_LineString(array(Point)) -> LineString
•
ST_Point(double, double) -> Point
•
ST_Polygon(varchar) -> Polygon
可以在诸多函数中使用这些对象来进行位置比较等处理：
•
ST_Contains(Geometry, Geometry) -> boolean
•
ST_Touches(Geometry, Geometry) -> Boolean
•
ST_Within(Geometry, Geometry) -> Boolean
•
ST_Length(Geometry) -> double
•
ST_Distance(Geometry, Geometry) -> double
•
ST_Area(SphericalGeography) -> double
Trino
文档（参见
1.4.2
节）详细介绍了
Trino
中对地理空间的支持。如果你在使用
Trino
时需要处理地理空间数据，强烈建议你看一下该文档。
9.22
预处理语句
预处理语句是一种非常有用的方法，它可以使用不同的输入参数值运行相同的 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.