+--------+-------------+-------------+-------+---------+
| ADD_ID |  Longitude  |  Latitude   | Range | Address |
+--------+-------------+-------------+-------+---------+
|      1 | 72.03092000 | 33.28729000 |    50 | abcd    |
+--------+-------------+-------------+-------+---------+

+--------+-------------+-------------+
| Cor_id |   Co_Lat    |   Co_GLng   |
+--------+-------------+-------------+
|   8450 | 72.03092011 | 33.28729005 |
|   8451 | 73.03099001 | 32.28729901 |
+--------+-------------+-------------+

+--------+-------------+-------------+-------------------------+
| Cor_id |   Co_Lat    |   Co_GLng   |        Address          |
+--------+-------------+-------------+-------------------------+
|   8450 | 72.03092011 | 33.28729005 | abcd                    |
|   8451 | 73.03099001 | 32.28729901 | 73.03099001,32.28729901 |
+--------+-------------+-------------+-------------------------+

SELECT
    CT.Id,
    CT.Co_Lat,
    CT.Co_GLng,
    [Address] = COALESCE(AD.[Address],cast(CT.Co_Lat as varchar(50))+','+cast(CT.Co_GLng as varchar(50)),'')
    FROM Coordinate_Table CT
       LEFT JOIN Address_Table AD
          ON CT.Co_Lat BETWEEN AD.Longitude+0.00000005 AND AD.Longitude-0.00000005
             AND CT.Co_GLng BETWEEN AD.Latitude+0.00000005 AND AD.Latitude-0.00000005