
How can I exclude duplicate records from sql query
Aug 25, 2016 · The explanation for what you are seeing most likely is that the records you are getting back are not duplicates. For example, if you used SELECT *, then you would be getting back all columns, and even though the employee name, id, etc. columns could be identical for multiple records, the other columns might be distinct.
SQL - Remove the duplicate Results - Stack Overflow
You can use the DISTINCT in SQL Server to get the distinct records only. Apart from this you can also use the ROW_NUMBER (Transact-SQL) function to get the distinct result by assigning the numbers to a result set. The syntax of row_number() is as shown below. ROW_NUMBER ( ) OVER ( [ PARTITION BY value_expression , ... [ n ] ] order_by_clause )
Removing duplicates from a SQL query (not just "use distinct")
Feb 7, 2014 · If I understand you correctly, you want to list to exclude duplicates on one column only, inner join to a sub-select. select u.* [whatever joined values] from users u inner join (select name from users group by name having count(*)=1) …
sql - How to eliminate duplicates from select query ... - Stack …
Oct 16, 2016 · For PostgreSQL as well as SQL Server 2005+, DB2 and later versions of Oracle (9+), you can use the windowing function ROW_NUMBER() select * from ( select *, ROW_NUMBER() over (partition by userID order by yr desc) rown ) X where rown = 1
SQL How to remove duplicates within select query?
Sep 12, 2010 · Removing SQL Duplicates via SELECT. 0. SQL - remove duplicates from query. 0.
sql - Eliminating duplicate values based on only one column of the ...
Jul 7, 2013 · SQL Query: Remove duplicates in column that is not primary key. 9. Removing duplicates from one column ...
sql - join two different tables and remove duplicated entries
Jan 13, 2013 · I'm complete novice in sql queries. I have two tables: table1: id_s name post_code city subject ----- 1 name1 postal1 city1 subject1 2 name2 postal2 city2 subject2 3 name3 postal3 city3 subject3 4 name4 postal4 city4 subject4 ... ~350 table2:
sql - how to exclude rows that have duplicates in one field - Stack ...
Jul 27, 2010 · This query will select the first article (lowest id) from each category. SELECT a.* FROM Article a LEFT JOIN Article a2 ON a.id<a2.id AND a.cat_id=a2.cat_id WHERE a2.id IS NULL
mysql - SQL: How to select rows from a table while ignoring the ...
How to select rows from a table while ignoring the duplicate field values? Here is an example: id user_id message 1 Adam "Adam is here." 2 Peter...
sql server - SQL Query to exclude duplicates - Stack Overflow
Apr 3, 2018 · SQL Query to exclude duplicates. Ask Question Asked 6 years, 11 months ago. Modified 6 years, 11 months ago.