sqlite - SQL query to obtain a count of how many items have each possible value for a given column -

sqlite - SQL query to obtain a count of how many items have each possible value for a given column -

September 15, 2012

Ok, so I have a logical (SQLite) table, in which a column (time) is a unix simultaneous timestamp (second).

columns are irrelevant to my purposes). These timestamp log entries are.

How many items I am logging per hour (all the time - I do not care to do this for only a given day or anything). I am trying to get an idea of activity density across the average ). I have been successful in writing SELECT STRFTIME ('% H', DATETIME (time, 'unixepoch', 'localtime')) in the query by logging in ; , which then gives me a huge list of number 0-23 which I can run through the uniq -c to get the count of events per hour.

However (beyond any practical requirement, I accept), I want to count this step in SQL. My brain knew me as long as I wanted to know that to bring some kind of self-involvement, unique values are received only for the hour-generated columns, but where does it come from? D: Any thoughts?

  SELECT STRFTIME ('% H', DATETIME (time, 'Unixpoke', 'local Time ')), COUNT (second field) STRFTIME from log group ('% H ', DATETIME (time,' UNIXPOK ',' local time ')); Note: I have not worked with SQLite, however, it supports  GROUP BY  and therefore, it should work.


















Get link





Facebook





X





Pinterest





Email





Other Apps




Comments





Post a Comment







Popular Posts




IronPython in C#: No module named xmlrpclib -



    I am trying to create a web application with an interactive console for IronPython. When I try to import xmlrpclib into the General console of IronPython, it works. However, if I use IronPython inside my C # code, then it does not put an exception "a module named xmlrpclib", is it a known issue? Any solution to solve this issue?   Here is the code:    var testcode = @ "import xmlrpclib; apiarver = xmlrpclib.ServerProxy ('address', allow_none = true); print APIServer.Hello () ; "; Mystream str = newest Mystream (); ScriptEngine Engine = Python. Cretegenine (); Engine. Retyme.io asset output (str, system text encoding. ASCII); Engine. Serial.io.setuperoutput (str, systemtext.edcoding.aspx); ScriptScope scope = engine.CreateScope (); ScriptSource src = engine.CreateScriptSourceFromString (testCode); Src.Execute (scope); Sorry for the silly question, it has come to know that there is a path used by IronPathon inside me.       The C # code was not correct. I ...






qt creator - QtCreator importing makefile projects -



    Have you ever tried importing Classic C ++ / project into Qt Creator?   Say that I wanted to use some libraries in my GUI project, which must be created. how can I do this?      In Qt Creator 2.0.1 you can import projects using only * * Cmake, * .creator, * .pro or * .qmlproject   Then switch to cmake and you can import the project into Qt builder (Welcome tab -> Open project ...).   Alex     






php - cURL Cookie and 307 redirect issue -



    I currently have a script that loads my client using curls on another server Currently, the settings    curl_setopt ($ CH, CURLOPT_RETURNTRANSFER, 1); Curl_setopt ($ CH, CURLOPT_FOLLOWLOCATION, TRUE); Curl_setopt ($ ch, CURLOPT_AUTOREFERER, true); Curl_setopt ($ ch, CURLOPT_USERAGENT, $ UserAgent); Curl_setopt ($ CH, CURLOPT_HEADER, 0); $ Usecookie = ROOT_PATH "/public_html/football_parser/cookie.txt"; If ($ usecookie) {if (! Is_writable ($ usecookie)) {return "$ usecookie can not write cookie file, change the file's permission to 777 or read only for windows."; } Curl_setopt ($ ch, CURLOPT_COOKIEJAR, $ usecookie); Curl_setopt ($ ch, CURLOPT_COOKIEFILE, $ usecookie); } $ Output = curl_xac ($ ch);    I'm trying to load two example URLs   statto.com/football/teams/newcastle-united/2005-2006/results   and   statto.com/football/teams/newcastle-united/2008-2009/results   Without a second load without any problems  curl_setopt ($ ch, CURLOPT_FOLLOWLOCATION, TR...








Powered by Blogger