MySQL 8.0 Reference Manual Including MySQL NDB Cluster 8.0
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. For a
description of WKB format, see Well-Known Binary (WKB) Format.
Functions in this section detect arguments in either Cartesian or geographic spatial reference systems (SRSs), and return results appropriate to the SRS.
ST_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.
Prior to MySQL 8.0, these functions also accepted geometry objects as returned by the functions in Section 14.16.5, “MySQL-Specific Functions That Create Geometry Values”. Geometry arguments are no longer permitted and produce an error. To migrate calls from using geometry arguments to using WKB arguments, follow these guidelines:
Rewrite constructs such as ST_GeomFromWKB(Point(0,
0)) as Point(0, 0).
Rewrite constructs such as ST_GeomFromWKB(Point(0,
0), 4326) as ST_SRID(Point(0, 0),
4326) or ST_GeomFromWKB(ST_AsWKB(Point(0,
0)), 4326).
Unless otherwise specified, functions in this section handle their geometry arguments as follows:
If the WKB or SRID argument is NULL, the
return value is NULL.
By default, geographic coordinates (latitude, longitude) are
interpreted as in the order specified by the spatial reference
system of geometry arguments. An optional
options argument may be given to
override the default axis order. options
consists of a list of comma-separated
key=valuekey value is
axis-order, with permitted values of
lat-long, long-lat and
srid-defined (the default).
If the options argument is
NULL, the return value is
NULL. If the
options argument is invalid, an
error occurs to indicate why.
If an SRID argument refers to an undefined spatial reference
system (SRS), an
ER_SRS_NOT_FOUND error occurs.
For geographic SRS geometry arguments, if any argument has a longitude or latitude that is out of range, an error occurs:
If a longitude value is not in the range (−180,
180], an
ER_LONGITUDE_OUT_OF_RANGE
error occurs.
If a latitude value is not in the range [−90, 90],
an
ER_LATITUDE_OUT_OF_RANGE
error occurs.
Ranges shown are in degrees. If an SRS uses another unit, the range uses the corresponding values in its unit. The exact range limits deviate slightly due to floating-point arithmetic.
These functions are available for creating geometries from WKB values:
ST_GeomCollFromWKB(,
wkb
[, srid [,
options]])ST_GeometryCollectionFromWKB(
wkb
[, srid [,
options]])
Constructs a GeometryCollection value using
its WKB representation and SRID.
These functions handle their arguments as described in the introduction to this section.
ST_GeomFromWKB(,
wkb
[, srid [,
options]])ST_GeometryFromWKB(
wkb
[, srid [,
options]])
Constructs a geometry value of any type using its WKB representation and SRID.
These functions handle their arguments as described in the introduction to this section.
ST_LineFromWKB(,
wkb
[, srid [,
options]])ST_LineStringFromWKB(
wkb
[, srid [,
options]])
Constructs a LineString value using its WKB
representation and SRID.
These functions handle their arguments as described in the introduction to this section.
ST_MLineFromWKB(,
wkb
[, srid [,
options]])ST_MultiLineStringFromWKB(
wkb
[, srid [,
options]])
Constructs a MultiLineString value using
its WKB representation and SRID.
These functions handle their arguments as described in the introduction to this section.
ST_MPointFromWKB(,
wkb
[, srid [,
options]])ST_MultiPointFromWKB(
wkb
[, srid [,
options]])
Constructs a MultiPoint value using its WKB
representation and SRID.
These functions handle their arguments as described in the introduction to this section.
ST_MPolyFromWKB(,
wkb
[, srid [,
options]])ST_MultiPolygonFromWKB(
wkb
[, srid [,
options]])
Constructs a MultiPolygon value using its
WKB representation and SRID.
These functions handle their arguments as described in the introduction to this section.
ST_PointFromWKB(
wkb
[, srid [,
options]])
Constructs a Point value using its WKB
representation and SRID.
ST_PointFromWKB() handles its
arguments as described in the introduction to this section.
ST_PolyFromWKB(,
wkb
[, srid [,
options]])ST_PolygonFromWKB(
wkb
[, srid [,
options]])
Constructs a Polygon value using its WKB
representation and SRID.
These functions handle their arguments as described in the introduction to this section.