>> — 如果 A 的边界框严格位于 B 的右侧,则返回 TRUE
。
boolean >>(
geometry A , geometry B )
;
SELECT tbl1.column1, tbl2.column1, tbl1.column2 >> tbl2.column2 AS right FROM ( VALUES (1, 'LINESTRING (2 3, 5 6)'::geometry)) AS tbl1, ( VALUES (2, 'LINESTRING (1 4, 1 7)'::geometry), (3, 'LINESTRING (6 1, 6 5)'::geometry), (4, 'LINESTRING (0 0, 4 3)'::geometry)) AS tbl2; column1 | column1 | right ---------+---------+------- 1 | 2 | t 1 | 3 | f 1 | 4 | f (3 rows)