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

20 votes253 views6 answers
Mysql reset auto increment
SQL
2 votes243 views1 answer
Scaffold npgsql net core
SQL
0 vote251 views1 answer
Mysql range of dates overlap
SQL
5 votes253 views2 answers
Oracle find all tables with column name
SQL
0 vote246 views1 answer
Query by column for substring sql
SQL
1 vote228 views1 answer
Postgres cast as currency format
SQL
0 vote223 views1 answer
Eliminar ultimo carcacter mysql
SQL
1 vote243 views1 answer
Pl sql ptint
SQL
1 vote244 views2 answers
Last working day in week date function in sql
SQL
1 vote258 views1 answer
Oracle get current schema
SQL