Index on points

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Hi there,

which operator class can I use in order to search points by distance like in:

SELECT p FROM tbl WHERE (p <-> point(0,0)) < 10;

- From what I've seen, there is none - which surprises me ...

Mit freundlichem Gruß / With kind regards
    Holger Klawitter
- --
lists <at> klawitter <dot> de
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