Multiple input compare with detail table.

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Multiple input compare with detail table.

Author

Topic

durrani
Starting Member

1 Post

Posted - 2010-04-13 : 07:46:59

Here are the two tables:
CREATE TABLE master (
masterid BIGINT NOT NULL,
name VARCHAR(25),
CONSTRAINT PK_master PRIMARY KEY (masterid)
);
commit;
CREATE TABLE detail (
masterid BIGINT NOT NULL,
rangestart BIGINT,
rangeend BIGINT,
CONSTRAINT FK_detail_master FOREIGN KEY (masterid) REFERENCES master (masterid)
);
commit;
INSERT INTO master(masterid, name) values(1, 'master1');
INSERT INTO master(masterid, name) values(2, 'master2');
INSERT INTO master(masterid, name) values(3, 'master3');
commit;
insert into detail(masterid, rangestart, rangeend) values(1,100, 200);
insert into detail(masterid, rangestart, rangeend) values(1,250,300);
insert into detail(masterid, rangestart, rangeend) values(1,350,400);
insert into detail(masterid, rangestart, rangeend) values(2,100,200);
insert into detail(masterid, rangestart, rangeend) values(2,320,350);
insert into detail(masterid, rangestart, rangeend) values(2,390,400);
insert into detail(masterid, rangestart, rangeend) values(3,100,200);
insert into detail(masterid, rangestart, rangeend) values(3,250,300);
insert into detail(masterid, rangestart, rangeend) values(3,355,455);
commit;

Input values is an array containing values:
case a:
120
For this input all three masterid should be returned, since 120 falls in range of all the three master ids.

case b:
120
260
For this input masterid 1 and 3 should be returned, since 260 does not fall in the ranges of masterid 2, that should not be returned.

case c:
110
260
350
In this case the query should return masterid 1 only.

I need to write this in a single query. Yes, I will be constructing the query programmatically.

Thanks & Regards
Mohammed A Durrani

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2010-04-13 : 08:31:00

Not sure but try this:


select
masterid,
name
from master m
where exists(select * from detail d 
             where d.masterid=m.masterid 
               and @InputValue1 between d.rangestart and d.rangeend)
  and (exists(select * from detail d 
             where d.masterid=m.masterid 
               and @InputValue2 between d.rangestart and d.rangeend)
       or @InputValue2 is null)
  and (exists(select * from detail d 
             where d.masterid=m.masterid 
               and @InputValue3 between d.rangestart and d.rangeend)
       or @InputValue3 is null)

No, you're never too old to Yak'n'Roll if you're too young to die.

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2010-04-13 : 08:55:17

how will you be inputting values? as comma separated list?

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

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