Name
= — Returns TRUE if A's bounding box is the same as B's. Uses double precision bounding box.
Synopsis
boolean =(
raster
A
,
raster
B
);
Description
The = operator returns TRUE if the bounding box of raster A
is the same as the bounding box of raster B. PostgreSQL uses the =, <, and > operators defined for rasters to
perform internal orderings and comparison of rasters (ie. in a GROUP BY or ORDER BY clause).
![[Caution]](../images/caution.png)
|
|
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This operand will NOT make use of any indexes that may be available on the rasters. Use ~= instead. This operator exists mostly so one can group by the raster column. |
Availability: 2.1.0