IF NOT EXISTS( 
SELECT * FROM INFORMATION_SCHEMA.COLUMNS 
WHERE TABLE_NAME = 'pal_SurfaceField' AND COLUMN_NAME = 'isGroupSized')
BEGIN
    ALTER TABLE pal_SurfaceField 
    ADD isGroupSized BIT NULL;
END


IF NOT EXISTS( 
SELECT * FROM INFORMATION_SCHEMA.COLUMNS 
WHERE TABLE_NAME = 'pal_Surface' AND COLUMN_NAME = 'navAsPills')
BEGIN
    ALTER TABLE pal_Surface 
    ADD navAsPills BIT NULL;
END