sql - Find a where start and end date are not null over multiple rows -


to keep simple have 1 table. 1 column lotnumber, 1 start date , 1 finish date. when first entry lot number enter has start date. depending on how many shift takes finish lot can have server rows no date until completed , have finish date.

shift.........lot..........start..........end
1...................1............o.............null
2...................1.......... null......... null
3.................. 1.......... null.......... o
1.................. 2........... o........... null

i want pick out lot number has both start , end date though not on same row. possible.

select t1.lotnumber blendingcycletime t1 inner join blendingcycletime t2 on t1.lotnumber = t2.lotnumber t1.actualstartdaytime not null , t2.actualfinishdaytime null

i have landed on doesn't work well. ideas?

try this:

create table #tb (shift int,lot int,startd int, endd int) go insert #tb values(1,1,0,null),                       (2,1,null,null),                                      (3,1,null,0),                                      (1,2,0,null)  select * #tb  select lot #tb group lot having max(startd) not null , max(endd) not null

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