mariadb clone database to another name
// if you didnt create the target db, do it:
mysql -u your_user -p
> CREATE DATABASE the_db_cloned_name;
> SHOW DATABASES
// then check if it is created and so you're ready to proceed
mysqldump -u your_user -p the_db_name > /directory/file_name.sql
mysql -u your_user -p the_db_cloned_name < /directory/file_name.sqlselect 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);find duplicates mysql
SELECT
col,
COUNT(col)
FROM
table_name
GROUP BY col
HAVING COUNT(col) > 1;duplicate record mysql
SELECT firstname,
lastname,
list.address
FROM list
INNER JOIN (SELECT address
FROM list
GROUP BY address
HAVING COUNT(id) > 1) dup
ON list.address = dup.address;Copyright © 2021 Codeinu
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