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

4 votes104 views2 answers
Show all database inside postgresql
SQL
0 vote112 views1 answer
Changing name of column and datatype in sql
SQL
0 vote108 views1 answer
Java nosql sort
SQL
2 votes112 views1 answer
SQL column name Postgre
SQL
0 vote107 views2 answers
T SQl Checking Your Username
SQL
1 vote107 views1 answer
Mysql sort by date column
SQL
0 vote120 views3 answers
Mysqli count down
SQL
0 vote109 views1 answer
Sql query to find difference between total no. of rows and distinct rows in sql server
SQL
0 vote97 views1 answer
Create table employees oracle
SQL
1 vote97 views1 answer
Mysql select row with max value group by
SQL