Mercurial Hosting > traffic-intelligence

annotate scripts/examples.sql @ 733:c35e4a4b199d dev

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
sortbylength
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Tue, 11 Aug 2015 12:06:10 -0400
parents d44eba0db517
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
367
d44eba0db517 creating a file with SQL code samples
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents:
diff changeset
1
d44eba0db517 creating a file with SQL code samples
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents:
diff changeset
2
d44eba0db517 creating a file with SQL code samples
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents:
diff changeset
3 # get object id, first and last frame numbers, length and number of features
d44eba0db517 creating a file with SQL code samples
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents:
diff changeset
4 select OF.object_id, min(P.frame_number) as frame1, max(P.frame_number) as frame2, max(P.frame_number)-min(P.frame_number) as length, count(OF.trajectory_id) as nfeatures from positions P, objects_features OF where P.trajectory_id = OF.trajectory_id group by OF.object_id order by nfeatures asc;