find duplicates mysql column
SELECT name, COUNT(*) c FROM table GROUP BY name HAVING c > 1;find duplicates mysql column
SELECT name, COUNT(*) c FROM table GROUP BY name HAVING c > 1;find duplicate keys in mysql
SELECT col, COUNT(col) FROM table_name GROUP BY col HAVING COUNT(col) > 1;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);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 duplicateFieldmyql find duplicates
SELECT
col,
COUNT(col)
FROM
table_name
GROUP BY col
HAVING COUNT(col) > 1;
Code language: SQL (Structured Query Language) (sql)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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