select duplicates in sql
SELECT username, email, COUNT(*)
FROM users
GROUP BY username, email
HAVING COUNT(*) > 1select duplicates in sql
SELECT username, email, COUNT(*)
FROM users
GROUP BY username, email
HAVING COUNT(*) > 1sql get rows with duplicate values
/* Gets reps */
SELECT fieldA, COUNT(*)
FROM tableA
GROUP BY fieldA
HAVING COUNT(*) > 1
/* Use reps to filter results */
SELECT a.*
FROM tableA a
JOIN (
SELECT fieldA, COUNT(*) as 'count'
FROM tableA
GROUP BY fieldA
HAVING COUNT(*) > 1
) b
ON a.fieldA = b.fieldAsql duplicate rows
/*SELECT hotel_id, reservation_id, COUNT(hotel_id)FROM staywhere reservation_id is not nullGROUP BY hotel_id, reservation_idHAVING COUNT(hotel_id) > 1*/select distinct s.hotel_id , t.* from stay sright join ( select hotel_id, reservation_id, count(*) as qty from staywhere reservation_id !=1 group by hotel_id, reservation_id having count(*) > 1) t on s.hotel_id = t.hotel_id and s.reservation_id = t.reservation_idsql how to duplicate a table
CREATE TABLE new_table LIKE original_table;
INSERT INTO new_table SELECT * FROM original_table;how to query without duplicate rows in sql
SELECT DISTINCT col1,col2... FROM table_name where Condition;how to get duplicate elements in sql
• SELECT first_name, COUNT (first_name) FROM employees
GROUP BY first_name
HAVING (COUNT(first_name) > 1);Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
