sql server - SQL Query - Eliminating rows with logical conditions in SQL -
sql server query remove rows arithmetical logic. ms sql
eg:
id name varchar a1 b1 1 a1 b1 2 a2 b2 4 a2 b2 2 a3 b3 5 a3 b3 8
expected output
a1 b1 1 a2 b2 2 a3 b3 5
logic: need every id , name combination, least var_char value (unfortunately not int, have cast ).
please me in resolving this. tried working on many logic's nothing worked.
you can use row_number below:
select top (1) ties * yourtable order row_number() over(partition id, [name] order convert(int,int_value) ) --you might require convert bigint if value bigger , in varchar
or can using sub query:
select * ( select *, rown = row_number() over(partition id, [name] order int_value) yourtable )a a.rown = 1
output below:
+----+------+-----------+ | id | name | int_value | +----+------+-----------+ | a1 | b1 | 1 | | a2 | b2 | 2 | | a3 | b3 | 5 | +----+------+-----------+
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