SQL Server Row_Count with Reset -


i have 6 columns:

date, account, side, symbol, currency, reset flag (0 yes, 1 no)

i want row count on partition reset row count whenever 0 appears in reset flag column. first 5 columns not unique combination forms unique set of columns.

please me !

every other solution i've researched doesn't work reason :/

this gaps , islands style problem. without sample data or desired results...

using 2 row_number() identify groups reset flag, , in outer query number rows resetflag , grp created in inner query.

change order of date, account, side, symbol, currency whichever order of columns want number rows by; keep them in same order each of 3 row_number()s.

/* ----- */  select      date   , account   , side   , symbol   , currency   , resetflag   , rn = case when resetflag = 0 0          else row_number() on (             partition resetflag, grp             order date, account, side, symbol, currency)          end (   select *     , grp = row_number() on (order date, account, side, symbol, currency)            - row_number() on (               partition resetflag                order date, account, side, symbol, currency)   t   ) s order date, account, side, symbol, currency

rextester demo: http://rextester.com/vlco32635

returns:

+------------+---------+------+--------+----------+-----------+----+ |    date    | account | side | symbol | currency | resetflag | rn | +------------+---------+------+--------+----------+-----------+----+ | 2017-01-01 |       7 |    2 |      3 | 7,0000   |         1 |  1 | | 2017-01-02 |       8 |    9 |      9 | 6,0000   |         1 |  2 | | 2017-01-03 |       4 |    1 |      5 | 6,0000   |         1 |  3 | | 2017-01-04 |       5 |    4 |      8 | 5,0000   |         0 |  0 | | 2017-01-05 |       2 |    1 |      3 | 1,0000   |         1 |  1 | | 2017-01-06 |       8 |    0 |      2 | 0,0000   |         0 |  0 | | 2017-01-07 |       0 |    3 |      8 | 9,0000   |         1 |  1 | | 2017-01-08 |       0 |    3 |      1 | 3,0000   |         1 |  2 | +------------+---------+------+--------+----------+-----------+----+

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