-- Syntax
count_cells( mddExp )
add_cells( mddExp )
avg_cells( mddExp )
min_cells( mddExp )
max_cells( mddExp )
some_cells( mddExp )
all_cells( mddExp )

-- Returning all the images of collection mr where all pixel values are greater than 20
SELECT mr FROM mr WHERE all_cells( mr > 20 )

-- Returning the average of a 1d collection
SELECT avg_cells(m) FROM Values1D AS m