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 vote263 views1 answer
Oracle c# multiple update sql
SQL
3 votes284 views3 answers
Mysql auto increment after delete
SQL
1 vote275 views1 answer
How to ckeck that email is present in databse in mysqli
SQL
0 vote289 views3 answers
Call to undefined function mysql_connect()
SQL
0 vote222 views1 answer
Sql new line output
SQL
0 vote256 views1 answer
Change data type in mysql
SQL
0 vote275 views1 answer
Restore backup mysql .gz
SQL
4 votes266 views1 answer
Oracle session date format
SQL
0 vote297 views2 answers
How to drop mili second in sql
SQL
1 vote264 views1 answer
Raw query must include primary key
SQL