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create table Test(
TCode INT,
Taluka_Name VARCHAR(100),
HealthFacility_Code INT,
Facility_Name VARCHAR(100),
SubCentre_ID INT,
SubCentre_Name VARCHAR(100),
Village_Code INT,
Village_Name VARCHAR(100))
--insert data into table
insert into Test
values (4, 'Ambala', 1123, 'UPHC Palledar Mohalla', 3924, 'UO Lal Kur', 10004459, 'Machhi Market & Ahata Area (1004459)'),
(4, 'Ambala', 1123, 'UPHC Palledar Mohalla', 3926, 'UO Gawal', 10004552, 'Shastri Colony & Bandhu Nagar (10004552)'),
(4, 'Ambala', 1123, 'UPHC Palledar Mohalla', 3926, 'UO Gawal', 10004456, 'Khatik Mandi (10004556)'),
(4, 'Ambala', 1123, 'UPHC Palledar Mohalla', 3926, 'UO Gawal', 10004457, 'Mochi Mandi (10004557)'),
(4, 'Ambala', 1123, 'UPHC Palledar Mohalla', 3926, 'UO Gawal', 10004458, 'Pakki Sarai (10004558)'),
(4, 'Ambala', 1123, 'UPHC Palledar Mohalla', 3945, 'UO Mochi', 10004457, 'Mochi Mandi (10004557)')
--view table
select TCode, Taluka_Name, HealthFacility_Code, Facility_Name, (SubCentre_ID), SubCentre_Name, Village_Code, Village_Name from Test
--using ROW_NUMBER() function
SELECT *
FROM (SELECT TCode,
Taluka_Name,
HealthFacility_Code,
Facility_Name,
SubCentre_ID,
SubCentre_Name,
Village_Code,
ROW_NUMBER() OVER (PARTITION BY Village_Code ORDER BY SubCentre_ID DESC) AS RowNumber,
Village_Name
FROM Test) as a
WHERE a.RowNumber = 1
order by SubCentre_ID
--final result
SELECT TCode,
Taluka_Name,
HealthFacility_Code,
Facility_Name,
SubCentre_ID,
SubCentre_Name,
Village_Code,
Village_Name
FROM (SELECT TCode,
Taluka_Name,
HealthFacility_Code,
Facility_Name,
SubCentre_ID,
SubCentre_Name,
Village_Code,
ROW_NUMBER() OVER (PARTITION BY Village_Code ORDER BY SubCentre_ID DESC) AS RowNumber,
Village_Name
FROM Test) as a
WHERE a.RowNumber = 1
order by SubCentre_ID
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