Update all geometry points by adding/subtracting from XY I want to update the POINT geometry column for all rows in a table. 

For example, I want to change POINT(1 1) to POINT(1.1 .9)

UPDATE myTable SET geoPoint = asText(geoPointX+1 geoPoint Y-1)


The query is example of what I want to achieve, but I'm unsure how to split the text and then handle the values.
This makes absolutely no sense, but you would want to do something like this

UPDATE myTable
  SET geoPoint = Point( ST_X(geoPoint)+0.1, ST_Y(geoPoint)-0.1 );


This will move absolutely in the base unit of the SRS.