Returns the measure value of the ST_Point value.
If the point-expression is an empty geometry (ST_IsEmpty()=1), then this method returns NULL.
By default, ST_M uses the original format for a geometry, if it is available. Otherwise, the internal format is used. For more information about internal and original formats, see STORAGE FORMAT clause, CREATE SPATIAL REFERENCE SYSTEM statement.
Syntax Returns See also Standards and compatibility Example |
Discuss this page in DocCommentXchange.
|
Copyright © 2012, iAnywhere Solutions, Inc. - SQL Anywhere 12.0.1 |