ST_WITHIN
Syntax
ST_WITHIN(g1,g2)
Description
Returns 1
or 0
to indicate whether geometry g1
is spatially within geometry g2
.
This tests the opposite relationship as ST_CONTAINS()
.
ST_WITHIN() uses object shapes, while WITHIN(), based on the original MySQL implementation, uses object bounding rectangles.
Examples
SET @g1 = ST_GEOMFROMTEXT('POINT(174 149)'); SET @g2 = ST_GEOMFROMTEXT('POLYGON((175 150, 20 40, 50 60, 125 100, 175 150))'); SELECT ST_WITHIN(@g1,@g2); +--------------------+ | ST_WITHIN(@g1,@g2) | +--------------------+ | 1 | +--------------------+ SET @g1 = ST_GEOMFROMTEXT('POINT(176 151)'); SELECT ST_WITHIN(@g1,@g2); +--------------------+ | ST_WITHIN(@g1,@g2) | +--------------------+ | 0 | +--------------------+
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