Find duplicates mysql

Find duplicates mysql column

SELECT name, COUNT(*) c FROM table GROUP BY name HAVING c > 1;

Source: stackoverflow.com

Select where duplicate mysql

SELECT 
    col1, COUNT(col1),
    col2, COUNT(col2)
FROM
    table_name
GROUP BY 
    col1, 
    col2
HAVING 
       (COUNT(col1) > 1) AND 
       (COUNT(col2) > 1);

Source: mysqltutorial.org

Find duplicates mysql

SELECT 
    col, 
    COUNT(col)
FROM
    table_name
GROUP BY col
HAVING COUNT(col) > 1;

Find duplicate keys in mysql

SELECT col, COUNT(col) FROM table_name GROUP BY col HAVING COUNT(col) > 1;

Similar codes

0 vote250 views1 answer
Rabbitmq service not starting
SQL
0 vote244 views1 answer
Count column of tables psql
SQL
0 vote205 views1 answer
PostgreSQL types and C# types
SQL
1 vote305 views1 answer
How to select the nth row in a SQL database table?
SQL
1 vote206 views1 answer
Sql try catch
SQL
1 vote212 views1 answer
Sql server: query to find out all the places where the table is used
SQL
0 vote215 views1 answer
Get last updated row sql server
SQL
0 vote213 views1 answer
Mysql 8 error on identified by
SQL
3 votes261 views1 answer
Mysql group_concat distinct
SQL
0 vote202 views1 answer
Drop tables from local database postgres pgadmin
SQL