The >= operator compares two raster objects by their universally unique identifiers (UUIDs) and returns true if the UUID of rast1 is greater than or equal to the UUID of rast2. It compares UUIDs only — not spatial extents or pixel types — and exists to support internal database operations such as union and B-tree indexing.
Note This operator only compares the UUIDs of two specified raster objects. It does not compare their spatial extents or pixel types. This operator is used only for operations such as union and B-tree.
Syntax
bool Operator >=(raster rast1, raster rast2);Parameters
| Parameter | Description |
|---|---|
rast1 | The first raster object. |
rast2 | The second raster object. |
Example
SELECT a.rast >= b.rast
FROM tbl_a a, tbl_b b
WHERE a.id = b.id