Table Column Types for Spatial Geometry Data

Describes 8 types of table column to store Spatial Geometry Data: GEOMETRY, POINT, LINESTRING, POLYGON, MULTIPOINT, MULTILINESTRING, MULTIPOLYGON, GEOMETRYCOLLECTION, GEOMETRYCOLLECTION.

There is 8 types of table column to store Spatial Geometry Data: GEOMETRY, POINT, LINESTRING, POLYGON, MULTIPOINT, MULTILINESTRING, MULTIPOLYGON, GEOMETRYCOLLECTION, GEOMETRYCOLLECTION.

"GEOMETRY" - A Spatial Geometry data which could be Point, LineString, Polygon, etc.

"POINT" - A Spatial data representing a single point in the space.

"LINESTRING" - A Spatial data representing a connected string of line segments.

"POLYGON" - A Spatial data representing a polygon enclosed by one or more closed line strings.

"MULTIPOINT" - A Spatial data representing a collection of points.

"MULTILINESTRING" - A Spatial data representing a collection of line strings.

"MULTIPOLYGON" - A Spatial data representing a collection of polygons.

"GEOMETRYCOLLECTION" - A Spatial data representing a collection of spatial objects.

Examples of look up value column types, SpatialColumns.sql:

-- SpatialColumns.sql
-- Copyright (c) 2005 HerongYang.com. All Rights Reserved.
--
CREATE TABLE SpatialData (
   Line VARCHAR(2),
   G GEOMETRY,
   P POINT,
   L LINESTRING,
   PL POLYGON
   );
INSERT INTO SpatialData VALUES (
   '1',
   ST_GeomFromText('POINT(1 1)'),
   Point(1,1),
   ST_LineStringFromText('LINESTRING(0 0, 1 0, 1 1, 0 1)'),
   ST_PolygonFromText('POLYGON((0 0, 1 0, 1 1, 0 1, 0 0))')
   );

SELECT Line, ST_Astext(G), ST_Astext(P), ST_Astext(L), ST_Astext(PL)
   FROM SpatialData;

DROP TABLE SpatialData;

Running SpatialColumns.sql on MySQL 8.0 server gives you:

herong> %mysql%\bin\mysql --user=root --password=TopSecret test \
   < SpatialColumns.sql

Line    ST_Astext(G)    ST_Astext(P)    ST_Astext(L)    ST_Astext(PL)
1       POINT(1 1)      POINT(1 1)      LINESTRING(0 0,1 0,1 1,0 1)
   POLYGON((0 0,1 0,1 1,0 1,0 0))

Table of Contents

 About This Book

 Introduction of SQL

 MySQL Introduction and Installation

 Introduction of MySQL Programs

 PHP Programs and MySQL Server

 Perl Programs and MySQL Servers

 Java Programs and MySQL Servers

 Datatypes and Data Literals

 Operations and Expressions

 Character Strings and Bit Strings

 Commonly Used Functions

Table Column Types for Different Types of Values

 Table Column Types for Character Strings

 Table Column Types for Byte Strings

 Table Column Types for Bit Strings

 Table Column Types for Exact Numbers

 Table Column Types for Approximate Numbers

 Table Column Types for Date and Time Values

 Table Column Types for LOB (Large OBject)

 Table Column Types for Look Up Values

 Table Column Types for JSON Documents

Table Column Types for Spatial Geometry Data

 Using DDL to Create Tables and Indexes

 Using DML to Insert, Update and Delete Records

 Using SELECT to Query Database

 Window Functions for Statistical Analysis

 Use Index for Better Performance

 Transaction Management and Isolation Levels

 Locks Used in MySQL

 Defining and Calling Stored Procedures

 Variables, Loops and Cursors Used in Stored Procedures

 System, User-Defined and Stored Procedure Variables

 MySQL Server Administration

 Storage Engines in MySQL Server

 InnoDB Storage Engine - Primary and Secondary Indexes

 Performance Tuning and Optimization

 Bulk Changes on Large Tables

 MySQL Server on macOS

 Installing MySQL Server on Linux

 Connection, Performance and Second Instance on Linux

 Archived Tutorials

 References

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