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ST_MemSize

ST_MemSize
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Name

ST_MemSize — Returns the amount of space (in bytes) the raster takes.

Synopsis

integer ST_MemSize ( raster rast ) ;

Description

Returns the amount of space (in bytes) the raster takes.

This is a nice compliment to PostgreSQL built in functions pg_column_size, pg_size_pretty, pg_relation_size, pg_total_relation_size.

[Note]

pg_relation_size which gives the byte size of a table may return byte size lower than ST_MemSize. This is because pg_relation_size does not add toasted table contribution and large geometries are stored in TOAST tables. pg_column_size might return lower because it returns the compressed size.

pg_total_relation_size - includes, the table, the toasted tables, and the indexes.

Availability: 2.2.0

Examples 

		SELECT ST_MemSize(ST_AsRaster(ST_Buffer(ST_Point(1,5),10,1000),150, 150, '8BUI')) As rast_mem;

		rast_mem
		--------
		22568

See Also

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