Get and set the X coordinate of an ST_Point value.
|
Argument … |
Specifies … |
|
xcoord |
a FLOAT value for the new X coordinate of the ST_Point value. |
|
IF you pass in … |
THEN ST_X returns … |
|
no argument |
a FLOAT value for the X coordinate. |
|
the xcoord argument |
an ST_Geometry value where the X coordinate is set to xcoord. |
|
NULL |
NULL |
ST_Point
SELECT skey1
FROM sample_points1
WHERE (point1.ST_X() < 1E-2);