ST_GeometryFromWKB,ST_GeomFromWKB

Syntax

GEOMETRY ST_GeometryFromWKB(VARCHAR WKB)

Description

将一个标准 WKB（Well-known binary）转化为对应的内存的几何形式

example

1. mysql> select ST_AsText(ST_GeometryFromWKB(ST_AsBinary(ST_Point(24.7, 56.7))));
2. +------------------------------------------------------------------+
3. | st_astext(st_geometryfromwkb(st_asbinary(st_point(24.7, 56.7)))) |
4. +------------------------------------------------------------------+
5. | POINT (24.7 56.7)                                                |
6. +------------------------------------------------------------------+
7. 1 row in set (0.05 sec)

9. mysql> select ST_AsText(ST_GeomFromWKB(ST_AsBinary(ST_Point(24.7, 56.7))));
10. +--------------------------------------------------------------+
11. | st_astext(st_geomfromwkb(st_asbinary(st_point(24.7, 56.7)))) |
12. +--------------------------------------------------------------+
13. | POINT (24.7 56.7)                                            |
14. +--------------------------------------------------------------+
15. 1 row in set (0.03 sec)

17. mysql> select ST_AsText(ST_GeometryFromWKB(ST_AsBinary(ST_GeometryFromText("LINESTRING (1 1, 2 2)"))));
18. +------------------------------------------------------------------------------------------+
19. | st_astext(st_geometryfromwkb(st_asbinary(st_geometryfromtext('LINESTRING (1 1, 2 2)')))) |
20. +------------------------------------------------------------------------------------------+
21. | LINESTRING (1 1, 2 2)                                                                    |
22. +------------------------------------------------------------------------------------------+
23. 1 row in set (0.06 sec)

25. mysql> select ST_AsText(ST_GeometryFromWKB(ST_AsBinary(ST_Polygon("POLYGON ((114.104486 22.547119,114.093758 22.547753,114.096504 22.532057,114.104229 22.539826,114.106203 22.542680,114.104486 22.547119))"))));
26. +-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
27. | st_astext(st_geometryfromwkb(st_asbinary(st_polygon('POLYGON ((114.104486 22.547119,114.093758 22.547753,114.096504 22.532057,114.104229 22.539826,114.106203 22.542680,114.104486 22.547119))')))) |
28. +-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
29. | POLYGON ((114.104486 22.547119, 114.093758 22.547753, 114.096504 22.532057, 114.104229 22.539826, 114.106203 22.54268, 114.104486 22.547119))                                                       |
30. +-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
31. 1 row in set (0.03 sec)

33. mysql> select ST_AsText(ST_GeomFromWKB(ST_AsBinary(ST_Polygon("POLYGON ((114.104486 22.547119,114.093758 22.547753,114.096504 22.532057,114.104229 22.539826,114.106203 22.542680,114.104486 22.547119))"))));
34. +-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
35. | st_astext(st_geomfromwkb(st_asbinary(st_polygon('POLYGON ((114.104486 22.547119,114.093758 22.547753,114.096504 22.532057,114.104229 22.539826,114.106203 22.542680,114.104486 22.547119))')))) |
36. +-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
37. | POLYGON ((114.104486 22.547119, 114.093758 22.547753, 114.096504 22.532057, 114.104229 22.539826, 114.106203 22.54268, 114.104486 22.547119))                                                   |
38. +-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
39. 1 row in set (0.03 sec)

keywords

ST_GEOMETRYFROMWKB,ST_GEOMFROMWKB,ST,GEOMETRYFROMWKB,GEOMFROMWKB,WKB