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Acronym for Structured Query Language. A syntax for retrieving and manipulating data from a relational database.
3
votes
Accepted
How can I optimize this point-linking query?
gps_nodes gps_nodes_1
INNER JOIN
gps_nodes gps_nodes_2
ON st_dwithin(gps_nodes_1.geog,gps_nodes_1.geog,20)
If you want to limit the points to a specific area you should use a where in this SQL …