-- st_asbinary
SELECT hex(st_asbinary(st_geogfromwkb(X'0101000000000000000000F03F0000000000000040')));
+------------------------------------------------------------------------------------+
|hex(st_asbinary(st_geogfromwkb(X'0101000000000000000000F03F0000000000000040'), NDR))|
+------------------------------------------------------------------------------------+
|                                                                01010000000000000...|
+------------------------------------------------------------------------------------+

SELECT hex(st_asbinary(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040'), 'XDR'));
+---------------------------------------------------------------------------------------+
|hex(st_asbinary(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040', 0), XDR))|
+---------------------------------------------------------------------------------------+
|                                                                   00000000013FF0000...|
+---------------------------------------------------------------------------------------+

-- st_geogfromwkb
SELECT hex(st_asbinary(st_geogfromwkb(X'0101000000000000000000F03F0000000000000040')));
+------------------------------------------------------------------------------------+
|hex(st_asbinary(st_geogfromwkb(X'0101000000000000000000F03F0000000000000040'), NDR))|
+------------------------------------------------------------------------------------+
|                                                                01010000000000000...|
+------------------------------------------------------------------------------------+

-- st_geomfromwkb
SELECT hex(st_asbinary(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040')));
+---------------------------------------------------------------------------------------+
|hex(st_asbinary(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040', 0), NDR))|
+---------------------------------------------------------------------------------------+
|                                                                   01010000000000000...|
+---------------------------------------------------------------------------------------+

SELECT st_srid(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040'));
+-------------------------------------------------------------------------+
|st_srid(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040', 0))|
+-------------------------------------------------------------------------+
|                                                                        0|
+-------------------------------------------------------------------------+

SELECT hex(st_asbinary(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040', 4326)));
+------------------------------------------------------------------------------------------+
|hex(st_asbinary(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040', 4326), NDR))|
+------------------------------------------------------------------------------------------+
|                                                                      01010000000000000...|
+------------------------------------------------------------------------------------------+

SELECT st_srid(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040', 4326));
+----------------------------------------------------------------------------+
|st_srid(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040', 4326))|
+----------------------------------------------------------------------------+
|                                                                        4326|
+----------------------------------------------------------------------------+

-- st_setsrid
SELECT st_srid(st_setsrid(ST_GeogFromWKB(X'0101000000000000000000F03F0000000000000040'), 4326));
+----------------------------------------------------------------------------------------+
|st_srid(st_setsrid(st_geogfromwkb(X'0101000000000000000000F03F0000000000000040'), 4326))|
+----------------------------------------------------------------------------------------+
|                                                                                    4326|
+----------------------------------------------------------------------------------------+

SELECT st_srid(st_setsrid(ST_GeomFromWKB(X'0101000000000000000000F03F0000000000000040'), 3857));
+-------------------------------------------------------------------------------------------+
|st_srid(st_setsrid(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040', 0), 3857))|
+-------------------------------------------------------------------------------------------+
|                                                                                       3857|
+-------------------------------------------------------------------------------------------+

-- st_srid
SELECT st_srid(st_geogfromwkb(X'0101000000000000000000F03F0000000000000040'));
+----------------------------------------------------------------------+
|st_srid(st_geogfromwkb(X'0101000000000000000000F03F0000000000000040'))|
+----------------------------------------------------------------------+
|                                                                  4326|
+----------------------------------------------------------------------+

SELECT st_srid(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040'));
+-------------------------------------------------------------------------+
|st_srid(st_geomfromwkb(X'0101000000000000000000F03F0000000000000040', 0))|
+-------------------------------------------------------------------------+
|                                                                        0|
+-------------------------------------------------------------------------+

SELECT st_srid(NULL);
+-------------+
|st_srid(NULL)|
+-------------+
|         NULL|
+-------------+