sql server - How to get unique rows from TSQL based on date open and closed -

-

i have 2 tables data one:

id          ans_id       user_id  date_opened 06146723    858735205    55258    2009-02-20 12:59:47.0000000 06146723    481768765    55258    2009-09-16 17:04:22.0000000

and table 2:

id          ans_id     user_id  date_closed 06146723    630993597  5258     2009-04-02 14:35:23.0000000 06146723    1348252927 5258     2010-05-24 16:03:33.0000000

i need combine them , 1 record, per close , open joint. tried this:

select distinct         a.id        ,a.ans_id        ,a.user_id        ,a.date_opened        ,b.date_closed        ,b.ans_id   table1 inner join table2 b on a.id = b.id , a.date_opened < b.date_closed  order a.id, a.date_opened

and got:

  06146723  858735205    55258  2009-02-20 12:59:47.0000000 2009-04-02 14:35:23.0000000 630993597 **06146723  858735205    55258  2009-02-20 12:59:47.0000000 2010-05-24 16:03:33.00000001348252927**   06146723  481768765    55258  2009-09-16 17:04:22.0000000 2010-05-24 16:03:33.00000001348252927

how can remove middle row?

thank you!

;with cte ( select          a.id        ,a.ans_id a_ans_id        ,a.user_id        ,a.date_opened        ,b.date_closed        ,b.ans_id b_ans_id        ,row_number() on (order a.date_opened asc, b.date_closed asc) rn1        ,row_number() on (order b.date_closed desc, a.date_opened desc) rn2   table1 inner join table2 b on a.id = b.id , a.date_opened < b.date_closed ) select id, a_ans_id, user_id, date_opened, date_closed, b_ans_id cte rn1 = 1 or rn2=1 order id, date_opened

Comments

Post a Comment

Popular posts from this blog

c++ - Convert big endian to little endian when reading from a binary file -

-
this question has answer here: how convert between big-endian , little-endian values in c++? 28 answers i've been looking around how convert big-endian little-endians. didn't find solve problem. seem there's many way can conversion. anyway following code works ok in big-endian system. how should write conversion function work on little-endian system well? this homework, since systems @ school running big-endian system. it's got curious , wanted make work on home computer also #include <iostream> #include <fstream> using namespace std; int main() { ifstream file; file.open("file.bin", ios::in | ios::binary); if(!file) cerr << "not able read" << endl; else { cout << "opened" << endl; int i_var; double d_var; while(!file.eof()) {...
Read more

C#: Application without a window or taskbar item (background app) that can still use Console.WriteLine() -

-
i'm trying create application adheres following: no taskbar no console or form window can utilize console.writeline() . (i.e. if executes app command prompt write console.) the problem if create windows form (or wpf) application can have there no taskbar, console or window show up, console.writeline() nothing. if create console app, writes console, can't figure out how hide (and if did hide it, write command prompt window?)... how do this? just create standard console application. callers responsibility hide window caused program (from how run c# console application console hidden ): system.diagnostics.processstartinfo start = new system.diagnostics.processstartinfo(); start.filename = dir + @"\myprocesstostart.exe"; start.windowstyle = system.diagnostics.processwindowstyle.hidden;
Read more

unicode - Are email addresses allowed to contain non-alphanumeric characters? -

-
i'm building website using `django. website have significant users non-english speaking countries. i want know if there technical restrictions on types of characters email address contain. are email addresses allowed contain english alphabets, numbers, "_", "@" , "."? are allowed contain non-english alphabets "é" or "ü"? are allowed contain chinese or japanese or other unicode characters? email address consists of 2 parts local before @ , domain goes after. rules these parts different: for local part can use ascii: latin letters - z - z digits 0 - 9 special characters !#$%&'*+-/=?^_`{|}~ dot ., not first or last, , not in sequence space , "(),:;<>@[] characters allowed restrictions (they allowed inside quoted string, backslash or double-quote must preceded backslash) plus since 2012 can use international characters above u+007f , encoded as utf-8 . domain part more res...
Read more