Finding duplicate rows mysql

Find duplicates mysql column

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

Source: stackoverflow.com

Myql find duplicates

SELECT 
    col, 
    COUNT(col)
FROM
    table_name
GROUP BY col
HAVING COUNT(col) > 1;
Code language: SQL (Structured Query Language) (sql)

Source: mysqltutorial.org

Mysql get latest duplicate rows

SELECT
   t1.primary_id,
   t1.duplicate_id,
   t1.data1,
   t1.data2
FROM
   table_name t1
LEFT JOIN table_name t2
	ON (t1.duplicate_id = t2.duplicate_id AND t1.primary_id < t2.primary_id) 
WHERE
	t2.primary_id IS NULL

Finding duplicate rows mysql

SELECT varchar_col
FROM table
GROUP BY varchar_col
HAVING COUNT(*) > 1;

Source: stackoverflow.com

Mysql find duplicates in same table

## Find ALL duplicate recods by value (without grouping them by value) ##
# to find the duplicate, 
# replace all instances of tableName with your table name
# and all instances of duplicateField with the field name where you look for duplicates
SELECT t1.*
FROM tableName AS t1
INNER JOIN(
	SELECT duplicateField
	FROM tableName
	GROUP BY duplicateField
	HAVING COUNT(duplicateField) > 1
)temp ON t1.duplicateField = temp.duplicateField
order by duplicateField

Finding duplicate rows mysql

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

Source: stackoverflow.com

Similar codes

1 vote144 views1 answer
Create email address from first and last name in sql
SQL
0 vote135 views1 answer
Clone table structure mysql
SQL
0 vote137 views1 answer
Plpgsql coalesce equivalent for empty string
SQL
1 vote133 views1 answer
Oracle lock user
SQL
2 votes164 views1 answer
Removing view
SQL
57 votes1.4K views5 answers
How to create a new user in postgresql
SQL
0 vote142 views1 answer
Add created and updatedAt fields in mysql
SQL
0 vote177 views1 answer
Time data type in mysql
SQL
0 vote138 views1 answer
Mysql Error Code: 1005
SQL
0 vote149 views1 answer
Select last N rows mysql
SQL