NULL Conditons in SQL Server -

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this question has answer here:

i have table this:

id      | code    | year --------+---------+---------- 0       | 1       | '1998' 1       | 5       |  null 2       | 7       | '2013' 3       | 1       | '1892' 4       | 5       |  null 5       | 7       | '1900'

i have combobox 3 values: all, nulls, not nulls.

all: load rows , no condition.

select * tbl_location

nulls:

select * tbl_location year null

'not nulls'

select * tbl_location year not null

'all' combo-box value load rows without condition

i want in 1 query. can do?

you need pass value of combobox in @status:

here need set conditions this:

declare @status varchar(15) --set status  select *  tbl_location (@status = 'all'         or (@status = 'nulls' , year null)         or (@status = 'not nulls' , year not null)       )

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