I have below 4 properties in a Filter class. I am going to parse below 4 properties to a StoredProcedure and get the filtered result.
/// <summary>
/// Gets and sets comma seperated condition ids.
/// Patients must have all these conditions in order to satisfy the filter.
/// </summary>
public string MustHaveAllConditions { get; set; }
/// <summary>
/// Gets and sets comma separated condition ids.
/// Patients must not have all of these conditions in order to satisfy the filter.
/// </summary>
public string MustNotHaveAllConditions { get; set; }
/// <summary>
/// Gets and sets comma separated condition ids.
/// Patients must have at least one of these conditions in order to satisfy the filter.
/// </summary>
public strin开发者_开发百科g MustHaveAtLeastOneCondition { get; set; }
/// <summary>
/// Gets and sets comma separated condition ids.
/// Patients must not have at least one of these conditions in order to satisfy the filter.
/// </summary>
public string MustNotHaveAtLeastOneCondition { get; set; }
My Stored procedure will have four parameters like below. Eg:
@*MustHaveAll*Conditions = "1,2"
@*MustNotHaveAll*Conditions = "3,4"
@*MustHaveAtLeastOne*Condition = "5,6,7,8"
@*MustNotHaveAtLeastOne*Condition = "9, 10"
I am using a UDF that returns a table with Ids column.
My question:
Basically I can use SQL "IN" operator to find the patients who has at least one Condition (ie : @MustHaveAtLeastOneCondition ) and "NOT IN" operator combination to filter @MustNotHaveAnyConditions.
Are there any SQL Operators(or esay ways) to filter MustHaveAllConditions, MustNotHaveAllConditions parameters ?
-- Patients
declare @Patient table (PatientID int)
-- Conditions per patient
declare @PatientCondition table (PatientID int, ConditionID int)
-- Conditions table generated from param string
declare @Condition table (ConditionID int)
-- Test data
insert into @Patient
select 1 union all
select 2 union all
select 3
insert into @PatientCondition
select 1, 1 union all
select 1, 2 union all
select 1, 3 union all
select 2, 1 union all
select 3, 3
insert into @Condition
select 1 union all
select 2
-- MustHaveAll
select *
from @Patient as P
where P.PatientID in
(
select PC.PatientID
from @PatientCondition as PC
inner join @Condition as C
on PC.ConditionID = C.ConditionID
group by PC.PatientID
having count(PC.ConditionID) = (select count(ConditionID) from @Condition)
)
--MustNotHaveAll
select *
from @Patient as P
where P.PatientID not in
(
select PC.PatientID
from @PatientCondition as PC
inner join @Condition as C
on PC.ConditionID = C.ConditionID
group by PC.PatientID
having count(PC.ConditionID) = (select count(ConditionID) from @Condition)
)
-- MustHaveAtLeastOne
select *
from @Patient as P
where P.PatientID in
(
select PC.PatientID
from @PatientCondition as PC
left outer join @Condition as C
on PC.ConditionID = C.ConditionID
where C.ConditionID is not null
)
--MustNotHaveAtLeastOne
select *
from @Patient as P
where P.PatientID not in
(
select PC.PatientID
from @PatientCondition as PC
left outer join @Condition as C
on PC.ConditionID = C.ConditionID
where C.ConditionID is not null
)
There really isn't an easy way to do what you're describing. What I would do is probably take your string and split it into a table variable and then use a combination of right, left and inner joins to remove results from another table variable that was my output.
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