Sql delete duplicate

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

How to remove duplicate in sql

Distinct: helps to remove all the duplicate
records when retrieving the records from a table.

SELECT DISTINCT FIRST_NAME FROM VISITORS;

Sql delete duplicate rows but keep one

# Step 1: Copy distinct values to temporary table
CREATE TEMPORARY TABLE tmp_user (
    SELECT id, name 
    FROM user
    GROUP BY name
);

# Step 2: Remove all rows from original table
DELETE FROM user;

# Step 3: Remove all rows from original table
INSERT INTO user (SELECT * FROM tmp_user);

# Step 4: Remove temporary table
DROP TABLE tmp_user;

Source: designcise.com

Similar codes

25 votes232 views4 answers
Sqlserver add column
SQL
0 vote317 views1 answer
Delet all record statment sql
SQL
0 vote226 views1 answer
Tsql cmd exec script from file
SQL
0 vote233 views1 answer
How to update sql server version
SQL
0 vote285 views1 answer
Sql check if field is not null
SQL
0 vote230 views1 answer
Mysql not defined
SQL
0 vote221 views1 answer
Mysql update privileges
SQL
0 vote235 views1 answer
Varchar2 length in oracle
SQL
0 vote211 views1 answer
Oracle sql date summer time
SQL
0 vote246 views1 answer
C# get sql min date
SQL