Timestamp Or Datetime To Track Time?
I am using PHP to insert information into the mysql database. I am trying to capture a "time-stamp" when the webpage opens and when it closes to track the amount of time people are on the page. I am inserting into separate columns: timein and timeout. I need the date with hours and minutes. Would it be better to use timestamp or datetime?
View 3 Replies (Posted: February 15, 2011 01:33PM)
Sponsored Links:
Related Forum Messages for MySQL:
Datetime And Timestamp Fields Better For PHP Apps Then Unix Timestamp Ints?
I was reading over an article that shows some really good information and benchmarks about how well the three different MySQL date/time storage options perform. MySQL DATETIME vs TIMESTAMP vs INT performance and benchmarking with MyISAM While reading the article you start to get the idea that using ints are just a waste and you should instead go with MySQL Datetime or Timestamp column types. However, towards the end of the article he does one more test not using MySQL functions and you suddenly see that straight INT's are 2x as fast as the two MySQL options when searching by unix timestamps. So it suddenly dawned on me - duh, what do PHP apps all use? time()! Almost every php application bases their logic off of the Unix Epoch. Which means that most queries for results in a certain time start off based on time() and then are converted to work with MySQL's fields. [Code]...
Posted: Jul 23 10 at 5:05
View 6 Replies!
View Related
Track Changes Over Time
I have table that looks like this: date myDate, varchar driver, varchar plate This table will store the latest state of the drivers associated with the car on a day by day basis - I want to generate a query that will show history which drivers have been added and deleted from a given car. I can't come up with the SQL
Posted: July 26, 2010 07:30PM
View 1 Replies!
View Related
How To Track IPs With Time Lenght Of Access
I have a problem with my website, cose I have this visitor (most probably an abusive web crawler..LiveMessage Crawler?!)that has been connected almost 24/7 for more than 2 weeks now. Im tired of it. I banned the IP with the forum function....and I still cant understand why it doesnt work....even if Im gonna try to ban that Ip in some other way, I still need your help ) So, I sent an email to that ip ISP, and they asked me for all the logs, with that IP accesses, lenght of the access and so on.....Im not sure but I dont think there is already this function in MySQL (Client API version 3.23.49) Now....is it possible to do something with MySQL to make a new file which tracks..logs..every access from visitors IPs and the lenght of their stay in the website for every day?
Posted: January 17, 2006 04:23PM
View 1 Replies!
View Related
Datetime - Time Different Calculations Where Date And Time Are In Seperate Columns
I've got a query where I'm trying to get the hours in duration (eg 6.5 hours) between two different times. In my database, time and date are held in different fields so I can efficiently query on just a startDate, or endDate as I never query specifically on time. My query looks like this SELECT COUNT(*), IFNULL(SUM(TIMEDIFF(endTime,startTime)),0) FROM events WHERE user=18 Sometimes an event will go overnight, so the difference between times needs to take into account the differences between the dates as well. I've been trying SELECT COUNT(*), IFNULL(SUM(TIMEDIFF(CONCAT(endDate,' ',endTime),CONCAT(startDate,' ',startTime))),0) FROM events WHERE user=18 Unfortunately I only get errors when I do this, and I can't seem to combine the two fields into a single timestamp.
Posted: May 3 10 at 16:41
View 2 Replies!
View Related
Comparing A Time Component Of A Datetime Column With A Time Range?
I am trying to to perform the following query SELECT * FROM mytab1 WHERE TIME_FORMAT(mydatetime_col, '%H:%i:%s) >= '20:00:00' AND TIME_FORMAT(mydatetime_col, '%H:%i:%s) <= '07:00:00' So I am trying to compare the time portion of a datetime field with a time range unfortunately no recs are bing returned. I know the mydatetime_col possesses a datetime value of 2011-04-01 21:00:00 and yet nothing is being returned.
Posted: May 17, 2011 10:09AM
View 1 Replies!
View Related
MySQL Create Time And Update Time Timestamp?
I am creating some tables where I want to store the time when a record was created and when it was last updated. I thought I could have two timestamp fields where one would have the value CURRENT_TIMESTAMP and the other would have CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP. But I guess I can't do this because you can have only 1 timestamp field with a default value in a table?How would you recommend I get and store the two times?
Posted: Aug 15 10 at 17:57
View 4 Replies!
View Related
Php - Unix Timestamp VS Datetime?
I have a Mysql table, which has a column add_date. It tracks the date/time when the record was added to the database. Queries based on this table: Display when the record was added in the format: 2 hours ago, 4 weeks ago, 1 year ago etc Allow users to search records inserted in any day/month/year. So the user may be allowed to choose to see the records inserted in 2009 only. Which would be better in this case - unix timestamp or datetime? Right now I'm using both, but since the table will have millions of records over time, having both columns may affect the size of the database. Unix timestamp seem to be better for conversion to 2 hours ago format in PHP and also it is timezone independent. But datetime has better readability and making a query for a particular date/time/year seems easier.
Posted: Jun 1 10 at 9:17
View 3 Replies!
View Related
Php - Use Unix TimeStamp Or DATETIME?
Probably many coders want to ask this question. it is What's the adventages of each one of those MySQL time formats. and which one you will prefer to use it in your apps. For me i use Unix timestamp because maybe i find it easy to convert & order records with it, and also because i never tried the DATETIME thing.
Posted: Mar 28 10 at 17:18
View 4 Replies!
View Related
UNIX Timestamp To DATETIME?
I have a table with statistics and a field named time with Unix Timestamps. There are about 200 rows in the table, but I would like to change the Unix timestamps to MySQL DATETIME. Without losing the current rows. What would be the best way to update the Unix Timestamp to MySQL's DATETIME? The current table: CREATE TABLE `stats` ( `id` int(11) unsigned NOT NULL auto_increment, `time` int(11) NOT NULL, `domain` varchar(40) NOT NULL, `ip` varchar(20) NOT NULL, `user_agent` varchar(255) NOT NULL, `domain_id` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 So the time (INT) should be a DATETIME field.
Posted: Aug 15 09 at 13:03
View 3 Replies!
View Related
Converting TIMESTAMP To DATETIME?
I am converting an existing database for use with a new script, problem is the new script uses the DATETIME format while the old database stores the time in TIMESTAMP format. Is there a way to convert the field data from TIMESTAMP into DATETIME with a MySQL query?
Posted: Mar 14, 2010, 16:03
View 1 Replies!
View Related
Datetime And Timestamp Recording Different Times
I have a datetime field that records date and time. This field records when rec is created. I also have a timestamp field that records whenever the record is updated. I noticed that when i first create the record, the update time is about 3-5 minutes before the create time. The update time and create time has to be identical. How can one lag the other? Im executing sql from a php page.
Posted: July 23rd, 2005 07:07 AM
View 1 Replies!
View Related
Datetime And Timestamp Data Types
I am new to mysql. Can someone tell me what is the difference between "Datetime" and "Timestamp" data types? also, can we have information correct upto a fraction of a second in any data type of MySql? if yes, in which data type? and upto what depth? (mili second, micro second. .... and so on).
Posted: January 28, 2008 02:14PM
View 1 Replies!
View Related
Timestamp :: No Datetime Format And Datatype
Since upgrading our server and now having mysql 4.1.14, we have a problem with our timestamp column. We need it to be in 14 digit mysql format, not datetime format. Our affiliate software will not run this way for certain functions. Is there a workaround for this, or do we need to go back to our previous version?
Posted: November 02, 2005 06:05AM
View 1 Replies!
View Related
Ruby: Mysql Timestamp/datetime?
Is there solution for '0000-00-00 00:00:00' problem, without changing table?I have "[]" in this query:dbh.select_all("select j.n, j.name, j.dsc, j.flag, j.td from job j where jtd='0000-00-00 00:00:00'") look solution for this: http://rubyforge.org/tracker/index.php?func=detail&aid=22243&group_id=234&atid=97
Posted: Mar 23 09 at 15:30
View 3 Replies!
View Related
Ruby Convert Timestamp To Datetime
I am trying to import data from a DB to another. The source DB has TIMESTAMP (mysql) the destination has DATETIME (mysql). I am trying something like that: start_at = DateTime.at(row['QA_CONF_START_STAMP']) #start_at But it is not working
Posted: Oct 22 09 at 17:33
View 1 Replies!
View Related
Php - Datetime Versus Timestamp Performance
i have a query.this should fetch records created 2 months ago. mysql table type is Innodb. which type do i use for date (time). Datetime or Timestamp int(11) or Timestamp for better performance. records is about 50000-100000. .... $monthsback = 2; $date = strtotime("-$monthsback months",time()); $date =date( "Y-m-d H:i:s", $date ); // if i use Datetime while($result=mysql_fetch_array($r)) { $recorddate=$result['date'];//fetched from mysql if ($recorddate>$monthsback) [code]...
Posted: May 1 at 6:20
View 2 Replies!
View Related
Dump Converts Timestamp To Datetime
While attempting to import data using mysqlimport we were getting "Incorrect datetime" failures on a few of our tables. We looked into our files and found that for columns of type timestamp the data files gave a datetime in the format of 0000-00-00 00:00:00. The process we are following is: We performed the dump on a unix machine as follows: mkdir somedirectory mysqldump --tab=somedirectory somedatabase We attempted the import on a windows machine as follows: mysqladmin create somedatabase mysql somedatabase < sometable.sql mysqlimport somedatabase sometable.txt sometable.txt contained data in the form 0000-00-00 00:00:00 and sometable.sql indicated the column was of type timestamp. Upon running the commands MySQL complained about "Incorrect datetime" and failed to import any rows. It appears as though mysqldump converted the unix timestamp to the datetime format during the dump. Is this normal behaviour? Any way to prevent this from happening during export, or any way to fix the data files before import?
Posted: July 08, 2010 03:50PM
View 2 Replies!
View Related
Faster Is Timestamp Than Datetime Column In Db?
This consists of two questions: Is MySQL's timestamp field really faster than datetime field in "order by" query? If the answer to above question is yes, how much faster it could be? Supposed in a table of 100 million rows and frequently sort a bunch of 100-200k rows based on timestamp field inside MySQL, will the sort time improvement be offseted by converting timestamp to readable string format in outside program?
Posted: Nov 1 09 at 4:24
View 2 Replies!
View Related
Mapping A DateTime Property To A Timestamp / Fluentnhibernate?
I have a little problem with fluentNhibernate and MySQL. I would like to map my entity: public class Topic { public Topic() { ParentTopic = null; }......... To a table with the same name. My bigest problem is how to I do the mapping of the CreatedAt so that in the database I get a timestamp that is only changed on insert and ignored when updating.
Posted: Feb 6 10 at 9:47
View 1 Replies!
View Related
Getting Storage Of Milliseconds/microseconds In A Datetime Or Timestamp
I need milliseconds/microseconds in a datetime or timestamp, or at the very least, in ADDITION to one of those fields. My testing of my chat lobby (using a polling engine) shows failure to obtain new chat if it arrived within the same second as the request, and then if I allow same second values in the return set I can get duplication... The MySQL site shows some support for microseconds in the NOW() documentation stating that if I send 'NOW()+0' I will get the .uuuuuu microsecond format. When I store this value in either datetime or timestamp I just get the YYYY-MM-DD HH:MM:SS stored, no microsecond component. I have found a few threads that say MySQL cannot do microseconds, but it is right in the manual that it can, but I can't get it to work... Unless the functions can deal with microseconds, but the datatypes cannot, which seems rather pointless.
Posted: Jun 12, 2009, 11:36
View 5 Replies!
View Related
Php - Make Doctrine Use A TIMESTAMP Column Instead Of DATETIME?
I'm looking for a way to use the MySQL timestamp column type in Doctrine 1.0. I was able to get it working by modifying Doctrine_DataDict_Mysql to return TIMESTAMP instead of DATETIME when the specified type is timestamp, but I'm fairly certain that it's not the right way, and it will probably break at some point. Doctrine 2.0 seems to come with a built-in type mapping facility, but I can't find an equivalent mechanism in 1.0, and I'm kind of stuck with it for now.
Posted: Oct 19 09 at 17:28
View 1 Replies!
View Related
Check If Timestamp/datetime Belongs To A Specified Date?
Sometimes I have a datetime or timestamp columns in the database and, for example, I need to select all records with timestamp updated today. I usually do it like this: SELECT * FROM mytable WHERE CAST(TS AS DATE) = CURDATE(); SELECT * FROM mytable WHERE CAST(TS AS DATE) = '2009-11-01'; Also, it's possible to use DATE() function instead of cast: SELECT * FROM mytable WHERE DATE(TS) = CURDATE(); The question is which way is more correct and faster? Because I'm not sure CAST for all records is a very good idea, maybe there is a better way...
Posted: Nov 7 09 at 0:37
View 4 Replies!
View Related
|
TRACKER
