sql server - MS SQL: Help integrating two chunks of SQL -


i have query pulls data 2 tables, giving precedence first table.

    select row_number() over(order date asc) 'union_id', id, [date], data_from, total  from(     select  id, date, 'a' data_from, total         tbldailyconsumptionsfroma        (tbldailyconsumptionsfroma.active = 1) ,         (tbldailyconsumptionsfromstark.matched_metering_point = x)  union      select  id, date, 'b' data_from, total         tbldailyconsumptionsfromb        (tbldailyconsumptionsfromb.active = 1) ,         (tbldailyconsumptionsfromb.matched_metering_point = x) ,             not date in (select date tbldailyconsumptionsfroma tbldailyconsumptionsfroma.matched_metering_point = x , tbldailyconsumptionsfroma.active = 1) ) c;

my aim select rescent 365 days of data, outcome of union.

@t-clausen-dk kindly provided query below, believe on right path...

declare @gapdays int = 2 -- replace 365 in case  ;with x (   select datediff(d, '2014-01-01', [date])-dense_rank()over(order [date])  grp          ,[date]   @t ) select top 1 max([date]) last_date, min([date]) first_date, count(distinct [date]) days_in_a_row x group grp having count(distinct [date]) >= @gapdays order max([date]) desc

can put end rescent 365 continuous days of data returned? (and no rows returned if there isn't continuous run of 365 days).

thank in advance!!!


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