Returns the y coordinate of the ST_Geometry value.
.ST_Y(geo1)
geo1
ST_Geometry
The ST_Geometry value to determine the y value of.
DOUBLE Returns the y coordinate of the ST_Geometry value.
SQL/MM (ISO/IEC 13249-3: 2006) 6.1.3
The following example returns the result 20.0.
20.0
SELECT ST_Y(ST_Point(10.0,20.0,4326))