Documentation Home
MySQL 5.5 Reference Manual
Related Documentation Download this Manual Excerpts from this Manual

MySQL 5.5 Reference Manual  /  ...  /  Functions That Create Geometry Values from WKB Values

12.15.4 Functions That Create Geometry Values from WKB Values

These functions take as arguments a BLOB containing a Well-Known Binary (WKB) representation and, optionally, a spatial reference system identifier (SRID). They return the corresponding geometry.

These functions also accept geometry objects for compatibility with the return value of the functions in Section 12.15.5, “MySQL-Specific Functions That Create Geometry Values”. Thus, those functions may be used to provide the first argument to the functions in this section.

GeomFromWKB() accepts a WKB value of any geometry type as its first argument. Other functions provide type-specific construction functions for construction of geometry values of each geometry type.

For a description of WKB format, see Section, “Well-Known Binary (WKB) Format”.

Download this Manual
User Comments
Sign Up Login You must be logged in to post a comment.