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 vote219 views1 answer
Get last inserted primary key
SQL
4 votes141 views1 answer
Invalid reference to FROM-clause entry for table "unidades
SQL
0 vote149 views2 answers
Sqlite unique
SQL
0 vote157 views1 answer
C# get sql min date
SQL
0 vote159 views1 answer
Open postgresql.conf in centos
SQL
0 vote146 views1 answer
If null don't update
SQL
0 vote168 views1 answer
Createdb with postgresql on ubuntu
SQL
0 vote147 views1 answer
Mysql export and import
SQL
1 vote151 views1 answer
Sql update table remove spaces
SQL
2 votes151 views1 answer
Set boolean flasksql
SQL