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how to exclude duplicates in sql

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YOU.com answered on February 26, 2021 Popularity 8/10 Helpfulness 3/10

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how to exclude duplicates in sql

Comment

SELECT DISTINCT column1, column2, ...
FROM table_name;

Popularity 8/10 Helpfulness 3/10 Language sql

Source: Grepper

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Contributed on Sep 12 2023

YOU.com

0 Answers Avg Quality 2/10

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sql exclude duplicates and find even id

Comment

SELECT DISTINCT city FROM tablename WHERE id % 2 = 0

Popularity 9/10 Helpfulness 7/10 Language sql

Source: Grepper

Tags: find

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Contributed on Feb 26 2021

Comfortable Crocodile

0 Answers Avg Quality 2/10

how to deselct duplicates in sql

Comment

SELECT DISTINCT CITY FROM STATION WHERE ID%2=0;

Popularity 9/10 Helpfulness 5/10 Language sql

Source: Grepper

Tags: sql

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Contributed on Aug 15 2022

Divyesh Lahane

0 Answers Avg Quality 2/10

sql remove duplicates

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WITH cte AS (
    SELECT 
        contact_id, 
        first_name, 
        last_name, 
        email, 
        ROW_NUMBER() OVER (
            PARTITION BY 
                first_name, 
                last_name, 
                email
            ORDER BY 
                first_name, 
                last_name, 
                email
        ) row_num
     FROM 
        sales.contacts
)
DELETE FROM cte
WHERE row_num > 1;
/*
Code language: SQL (Structured Query Language) (sql)

In this statement:

First, the CTE uses the ROW_NUMBER() function to find the duplicate rows 
specified by values in the first_name, last_name, and email columns.

Then, the DELETE statement deletes all the duplicate rows but keeps only one 
occurrence of each duplicate group.*/

Popularity 10/10 Helpfulness 4/10 Language sql

Source: www.sqlservertutorial.net

Tags: sql

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Contributed on May 24 2022

Lucas Gomes

0 Answers Avg Quality 2/10

sql delete duplicate

Comment

-- Oracle
DELETE FROM films
WHERE rowid NOT IN (
    SELECT min(rowid)
    FROM films
    GROUP BY title, uk_release_date
);

Popularity 10/10 Helpfulness 4/10 Language sql

Source: Grepper

Tags: sql

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Contributed on Apr 13 2021

VasteMonde

0 Answers Avg Quality 2/10

SQL remove duplicate

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DELETE FROM [SampleDB].[dbo].[Employee]
    WHERE ID NOT IN
    (
        SELECT MAX(ID) AS MaxRecordID
        FROM [SampleDB].[dbo].[Employee]
        GROUP BY [FirstName], 
                 [LastName], 
                 [Country]
    );

Popularity 10/10 Helpfulness 4/10 Language sql

Source: www.sqlshack.com

Tags: sql

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Contributed on Apr 11 2022

WilsonWW

0 Answers Avg Quality 2/10

how to delete one of the duplicates sql

Comment

SET ROWCOUNT 1
DELETE [dbo].[table] where ....
SET ROWCOUNT 0

Popularity 9/10 Helpfulness 3/10 Language sql

Source: Grepper

Tags: sql

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Contributed on Apr 12 2023

Ruben Visser

0 Answers Avg Quality 2/10

sql remove duplicates based on column

Comment

SELECT s.siteName, s.siteIP, h.date
FROM sites s INNER JOIN
     (select h.*, row_number() over (partition by siteName order by date desc) as seqnum
      from history h
     ) h
    ON s.siteName = h.siteName and seqnum = 1
ORDER BY s.siteName, h.date

Popularity 10/10 Helpfulness 3/10 Language sql

Source: stackoverflow.com

Tags: sql

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Contributed on Nov 29 2021

Mysterious Moose

0 Answers Avg Quality 2/10

delete duplicate sql

Comment

-1

WITH CTE AS(
   SELECT [col1]
           ,[col2]
           ,[col3]
     ,
       RN = ROW_NUMBER()OVER(PARTITION BY [col1],[col2],[col3] ORDER BY [col1],[col2],[col3])
   FROM [dbo].[table1]

)
DELETE FROM CTE WHERE RN > 1

Popularity 10/10 Helpfulness 2/10 Language sql

Source: Grepper

Tags: sql

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Contributed on Mar 11 2022

dr4ft

0 Answers Avg Quality 2/10

delete duplicate records in sql

Comment

WITH cte AS (
    SELECT 
        contact_id, 
        first_name, 
        last_name, 
        email, 
        ROW_NUMBER() OVER (
            PARTITION BY 
                first_name, 
                last_name, 
                email
            ORDER BY 
                first_name, 
                last_name, 
                email
        ) row_num
     FROM 
        sales.contacts
)
DELETE FROM cte
WHERE row_num > 1;
Code language: SQL (Structured Query Language) (sql)

Popularity 9/10 Helpfulness 2/10 Language typescript

Source: www.sqlservertutorial.net

Tags: records

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Contributed on Apr 21 2023

Nanu

0 Answers Avg Quality 2/10

how to exclude duplicates in sql

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delete duplicate records in sql

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