Mercurial Hosting > traffic-intelligence
changeset 367:d44eba0db517
creating a file with SQL code samples
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
---|---|
date | Mon, 15 Jul 2013 12:13:08 -0400 |
parents | 90bdabc06e9f |
children | 2db4e76599a1 |
files | scripts/examples.sql |
diffstat | 1 files changed, 4 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/scripts/examples.sql Mon Jul 15 12:13:08 2013 -0400 @@ -0,0 +1,4 @@ + + +# get object id, first and last frame numbers, length and number of features +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; \ No newline at end of file