The core PostgreSQL distribution includes the SP-GiST operator classes shown in Table 57-1.
Table 57-1. Built-in SP-GiST Operator Classes
|Name||Indexed Data Type||Indexable Operators|
|kd_point_ops||point||<< <@ <^ >> >^ ~=|
|quad_point_ops||point||<< <@ <^ >> >^ ~=|
|range_ops||any range type||&& &< &> -|- << <@ = >> @>|
|text_ops||text||< <= = > >= ~<=~ ~<~ ~>=~ ~>~|
Of the two operator classes for type point, quad_point_ops is the default. kd_point_ops supports the same operators but uses a different index data structure which may offer better performance in some applications.
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