sql - How to insert records as break times in a select in a Stored Procedure -


having table in sql server 2012, need return break times inserted in right position.

i able use temporary tables if necessary.

break: difference between times, need new record representing gaps.

table:

╔════════════════╦════════════════╦══════════╦════════╗ ║     start      ║      end       ║ duration ║  type  ║ ╠════════════════╬════════════════╬══════════╬════════╣ ║ 1/06/2015 1:00 ║ 1/06/2015 1:30 ║ 0:30     ║ logged ║ ║ 1/06/2015 2:00 ║ 1/06/2015 3:00 ║ 1:00     ║ logged ║ ║ 1/06/2015 3:20 ║ 1/06/2015 4:00 ║ 0:40     ║ logged ║ ║ 1/06/2015 4:00 ║ null           ║          ║ logged ║ ╚════════════════╩════════════════╩══════════╩════════╝

result:

╔════════════════╦════════════════╦══════════╦════════╗ ║     start      ║      end       ║ duration ║  type  ║ ╠════════════════╬════════════════╬══════════╬════════╣ ║ 1/06/2015 1:00 ║ 1/06/2015 1:30 ║ 0:30     ║ logged ║ ║ 1/06/2015 1:30 ║ 1/06/2015 2:00 ║ 0:30     ║ break  ║ ║ 1/06/2015 2:00 ║ 1/06/2015 3:00 ║ 1:00     ║ logged ║ ║ 1/06/2015 3:00 ║ 1/06/2015 3:20 ║ 0:20     ║ break  ║ ║ 1/06/2015 3:20 ║ 1/06/2015 4:00 ║ 0:40     ║ logged ║ ║ 1/06/2015 4:00 ║ null           ║          ║ logged ║ ╚════════════════╩════════════════╩══════════╩════════╝

here 1 solution:

declare @t table     (       starttime datetime ,       endtime datetime,       empid int         )  insert  @t values  ( '1/06/2015 1:00', '1/06/2015 1:30', 1 ),         ( '1/06/2015 2:00', '1/06/2015 3:00', 1 ),         ( '1/06/2015 3:20', '1/06/2015 4:00', 1 ),         ( '1/06/2015 4:00', null, 1 ),         ( '1/06/2015 1:00', '1/06/2015 1:20', 2 ),         ( '1/06/2015 2:10', '1/06/2015 3:10', 2 ),         ( '1/06/2015 3:20', '1/06/2015 3:30', 2 )   select  starttime, endtime, duration, empid, logged    ( select    starttime ,                     endtime ,                     datediff(mi, starttime, endtime) duration ,                                       empid,                                       'logged' logged,                     1 includerow                                  @t           union           select    endtime ,                     lead(starttime) on (partition empid order starttime ) ,                     datediff(mi, endtime, lead(starttime) on (partition empid order starttime ) ) ,                                      empid,                     'break' logged,                     case when endtime null 1 else 0 end includerow                                  @t         ) t   (t.starttime not null or endtime not null) , (duration > 0 or t.includerow = 1) order t.empid, t.starttime

output:

starttime               endtime                 duration    empid   logged 2015-01-06 01:00:00.000 2015-01-06 01:30:00.000 30          1       logged 2015-01-06 01:30:00.000 2015-01-06 02:00:00.000 30          1       break 2015-01-06 02:00:00.000 2015-01-06 03:00:00.000 60          1       logged 2015-01-06 03:00:00.000 2015-01-06 03:20:00.000 20          1       break 2015-01-06 03:20:00.000 2015-01-06 04:00:00.000 40          1       logged 2015-01-06 04:00:00.000 null                    null        1       logged 2015-01-06 01:00:00.000 2015-01-06 01:20:00.000 20          2       logged 2015-01-06 01:20:00.000 2015-01-06 02:10:00.000 50          2       break 2015-01-06 02:10:00.000 2015-01-06 03:10:00.000 60          2       logged 2015-01-06 03:10:00.000 2015-01-06 03:20:00.000 10          2       break 2015-01-06 03:20:00.000 2015-01-06 03:30:00.000 10          2       logged

you selecting first initial rows table, , endtime each row startime next row(lead window function). unioning results.


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