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DATEDIFF(day,cast(right([Availability],10) as date),cast(GETDATE() as date)) this can find the diff of two date. Browse other questions tagged sql sql-server sql-server-2012 substring date-difference or ask your own question. Is it possible to stay up while riding a bike on a moving sidewalk without actually moving? I have a table for operators in which I want to calculate the time difference between two status (10-20) for the whole day . My expected output for this operator is date diff between cl_id 230096 and 230102 , date diff between cl_id 230103 and 230107 , date diff between cl_id 230109 and cl_id 230141. This should work anyhow, the new section before the UNION ALL in the script will return results only if there are any Status 20's without preceding 10's.
The first OUTER APPLY will retrieve the next row with a status of 20 that is after the current created datetime.
The second OUTER APPLY will retrieve the next row after the current created datetime where there is no status 20. I have used some different test data because you used a picture from which I was unable to cut and paste. Not the answer you're looking for?Browse other questions tagged sql sql-server sql-server-2008 or ask your own question.

What is the most efficient way to group by day for overlapping date ranges (SQL Server 2008)? Why does it take months, sometimes years, for the BEA and NTSB to complete aviation accident investigations? One of the renowned search tool on Unix-like systems which can be used to search for anything whether it be a file, or a line or multiple lines in file is grep utility. Due its varying functionalities, it has many variants including grep, egrep (Extended GREP), fgrep (Fixed GREP), pgrep (Process GREP), rgrep (Recursive GREP) etc. Main thing that remains to be investigated is what are the differences between the three main variants i.e.
In case of egrep, even if you do not escape the meta-characters, it would treat them as special characters and substitute them for their special meaning instead of treating them as part of string.
Like here, egrep searched for “file” string when the meta-characters were not escaped as it would mean by the meaning of these characters. Fgrep or the Fixed grep or grep -F is yet another version of grep which is fast in searching when it comes to search for the entire string instead of regular expression as it doesn’t recognize the regular expressions, neither any meta-characters. Fgrep searches for complete string and doesn’t even recognize special characters as part of regular expression even if escaped or not escaped.
We’ve already covered some practical examples of grep command you can read them here, if you want to get more out of grep command in Linux.
If you find any other differences between these three versions of grep, do mention them in your comments.
Currently a Computer Science student and a geek when it comes to Operating System and its concepts. Once I get these difference I want to sum all the date diff value to calculate busy time for that operator.

And this assumes you will always have both Status 10 AND 20, and that their timestamp ranges never overlap. Now the script fill find all Status 10 - 20 datediffs, and in case no Status 20 exists after the last 10, then the latest existing timestamp after that Status 10 will be used instead. It is very vast in functionality which can be attributed to the large number of options it supports like: searching using string pattern, or reg-ex pattern or perl based reg-ex etc. But these variants have minor differences to original grep which has made them popular and to be used by various Linux programmers for specific tasks. This version of grep is efficient and fast when it comes to searching for a regular expression pattern as it treats meta-characters as is and doesn’t substitute them as strings like in grep, and hence you are freed from the burden of escaping them as in grep. Apart from difference in the set of regular expressions used, and speed of execution, rest command line parameters remain same for all the three versions of grep and even instead of “egrep” or “fgrep”, “grep -E” or “grep -F” are recommended to be used. Have 1+ years of experience in Linux and currently doing a research on its internals along with developing applications for Linux on python and C. Unfortunately I don't have the time to clean it up, so I ask that next time you post a question, please make it as clear cut and clean as possible, since there's a lot less effort involved to answer a question once instead of editing 3 different variations along the ride. It may possible that at the beginning we found status 20(no pair status 10) after some record. But when the special characters were escaped, then instead of treating them as part of string, grep treated them as meta-characters and searched for words “file” or “gile” in the file. In this case we have to take the min date as the status 10's date and find the date diff between them .

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