ST_IsEmpty — Returns true if the raster is empty (width = 0 and height = 0). Otherwise, returns false.
boolean ST_IsEmpty(raster rast);
Returns true if the raster is empty (width = 0 and height = 0). Otherwise, returns false.
Disponibilidad: 2.0.0
SELECT ST_IsEmpty(ST_MakeEmptyRaster(100, 100, 0, 0, 0, 0, 0, 0))
st_isempty |
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f |
SELECT ST_IsEmpty(ST_MakeEmptyRaster(0, 0, 0, 0, 0, 0, 0, 0))
st_isempty |
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t |