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

5 votes330 views4 answers
Change auto increment mysql
SQL
1 vote326 views1 answer
Select count distinct multiple columns sql server
SQL
0 vote373 views1 answer
SQL joins in python
SQL
0 vote338 views1 answer
Microsoft sql server python connection
SQL
-1 vote350 views2 answers
Postgres autoincrement primary key
SQL
0 vote397 views1 answer
Split first name and last name in sql
SQL
1 vote312 views1 answer
Set statistics on in ssms
SQL
0 vote350 views1 answer
Oracle grant create job
SQL
0 vote349 views1 answer
Sql remove non numeric characters
SQL
49 votes375 views6 answers
Alter table add column
SQL