You store the date and time as a formatted datetime string.
This creates a mess.
It is best to store all your dates (as I said) as an integer(11) not a string but since you are storing as a datetime string, that's OK... you can deal with this easily:
The first thing you need to do is to convert that datetime string to a unix timestamp, for example (like this):
Code:
query="select UNIX_TIMESTAMP( 'YOUR DATETIME STRING HERE') FROM TemperatureLOG order by TimeLog DESC LIMIT 1;"
I did not test it, but you get the idea. UNIX_TIMESTAMP() will take a formatted string and convert it to unix time.
Quote:
MySQL UNIX_TIMESTAMP() returns a Unix timestamp in seconds since '1970-01-01 00:00:00' UTC as an unsigned integer if no arguments are passed with UNIX_TIMESTAMP().
When this function is used with a date argument, it returns the value of the argument as an unsigned integer in seconds since '1970-01-01 00:00:00' UTC.
The argument may be a DATE, DATETIME,TIMESTAMP or a number in YYYYMMDD or YYMMDD.
Note: Since UNIX_TIMESTAMP() works on the current datetime, your output may vary from the output shown.
consider this as a csv file.
H,0002,0002,20100218,17.25,P,barani
D,1,2,3,4,5,6,7,8,9,10,11
D,1,2,3,4,5,6,7,8,9,10,11
D,1,2,3,4,5,6,7,8,9,10,11
D,1,2,3,4,5,6,7,8,9,10,11
D,1,2,3,4,5,6,7,8,9,10,11
T,5
N
i want to read the csv file and count the number of rows that start with D and... (11 Replies)
Hi,
I do little bash scripting so sorry for my ignorance.
How do I compare if the two variable not match and if they do not match run a command.
I was thinking a for loop but then I need another for loop for the 2nd list and I do not think that would work as in the real world there could... (2 Replies)
Hi All,
I wil be having Files as below in SourceFile_Path DIR
AA.20110131
AA.20110228
AA.20110202
AA.20110330
BB.20091031
I want to Keep only monthly (20110131,20110228,20100229,20110330) in First SourceFile_Path, If it is not monthly file then want to Move files to some another... (5 Replies)
Beginner/Intermediate shell; comfortable in the command line.
I have been looking for a solution to a backup problem. I need to compare Directory 1 to Directory 2 and copy all modified or new files/directories from Directory 1 to Directory 3. I need the directory and file structure to be... (4 Replies)
hi all,
How to compare two files whether they are same are not...? like i had my input files as 20141201_file.txt and 20141130_file2.txt
how to compare the above files based on date .. like todays file and yesterdays file...? (4 Replies)
Hello Friends
please help me to create script to compare 2 fiile which has rpm info .
File 1:
glibc-2.12.1.149.el6_6.5.x86_64.rpm
glibc-common-2.12-1.149.el6_6.5.x86_64.rpm
File 2 :
glibc-2.12.123.el6_6.5.x86_64.rpm
glibc-common-2.12-123.el6_6.5.x86_64.rpm
To compare file1... (1 Reply)
Hello,
i have a script that should compare between ${ARRAY}
that contains all fstab record like this :
>>echo ${ARRAY}
/ /boot
between all mountpoints in my df that is stord in ${ARRAY2}
>>echo ${ARRAY2}
/ /boot /dev/shm /var/spool/asterisk/monitor
now i have this loop:
for i in... (6 Replies)
Currently i am building a script like based on region parameter it will filter the records in config file and then it will create a text file like ab.txt and it will read the path location in that file and now i need to compare the files name in the config file to files in the path of the config... (1 Reply)
Hi Community!
Following on from this code in another thread:
#!/bin/bash
file_string=`/bin/cat date.txt | /usr/bin/awk '{print $5,$4,$7,$6,$8}'`
file_date=`/bin/date -d "$file_string"`
file_epoch=`/bin/date -d "$file_string" +%s`
now_epoch=`/bin/date +%s`
if
then
#let... (2 Replies)
Discussion started by: Greenage
2 Replies
LEARN ABOUT DEBIAN
datetime::format::w3cdtf
DateTime::Format::W3CDTF(3pm) User Contributed Perl Documentation DateTime::Format::W3CDTF(3pm)NAME
DateTime::Format::W3CDTF - Parse and format W3CDTF datetime strings
SYNOPSIS
use DateTime::Format::W3CDTF;
my $w3c = DateTime::Format::W3CDTF->new;
my $dt = $w3c->parse_datetime( '2003-02-15T13:50:05-05:00' );
# 2003-02-15T13:50:05-05:00
$w3c->format_datetime($dt);
DESCRIPTION
This module understands the W3CDTF date/time format, an ISO 8601 profile, defined at http://www.w3.org/TR/NOTE-datetime. This format as
the native date format of RSS 1.0.
It can be used to parse these formats in order to create the appropriate objects.
METHODS
This API is currently experimental and may change in the future.
o new()
Returns a new W3CDTF parser object.
o parse_datetime($string)
Given a W3CDTF datetime string, this method will return a new "DateTime" object.
If given an improperly formatted string, this method may die.
o format_datetime($datetime)
Given a "DateTime" object, this methods returns a W3CDTF datetime string.
NOTE: As of version 0.4, format_datetime no longer attempts to truncate datetimes without a time component. This is due to the fact
that "DateTime" doesn't distinguish between a date with no time component, and midnight.
o format_date($datetime)
Given a "DateTime" object, return a W3CDTF datetime string without the time component.
SUPPORT
Support for this module is provided via the datetime@perl.org email list. See http://datetime.perl.org/?MailingList for details.
Please submit bugs to the CPAN RT system at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=datetime-format-w3cdtf or via email at
bug-datetime-format-w3cdtf@rt.cpan.org.
AUTHOR
Dave Rolsky <autarch@urth.org>
CREDITS
This module is maintained by Gregory Todd Williams <gwilliams@cpan.org>. It was originally created by Kellan Elliott-McCrea
<kellan@protest.net>.
This module was inspired by DateTime::Format::ICal
COPYRIGHT
Copyright (c) 2009 David Rolsky. All rights reserved. This program is free software; you can redistribute it and/or modify it under the
same terms as Perl itself.
Copyright (c) 2003 Kellan Elliott-McCrea
Portions of the code in this distribution are derived from other works. Please see the CREDITS file for more details.
The full text of the license can be found in the LICENSE file included with this module.
SEE ALSO
datetime@perl.org mailing list
http://datetime.perl.org/
perl v5.10.1 2011-02-06 DateTime::Format::W3CDTF(3pm)