/TypeScript/How to get duplicate elements in sql

How to get duplicate elements in sql

Select duplicates in sql

SELECT username, email, COUNT(*)
FROM users
GROUP BY username, email
HAVING COUNT(*) > 1

Source: chartio.com

Sql count duplicate rows

SELECT _column, COUNT(*) 
FROM _table
GROUP BY _column
HAVING COUNT(*) > 1

How to get duplicate elements in sql

• SELECT first_name, COUNT (first_name) FROM employees
GROUP BY first_name
HAVING (COUNT(first_name) > 1);

FIND DUPLICATES IN COLUMN SQL

declare @YourTable table (id int, name varchar(10), email varchar(50))

INSERT @YourTable VALUES (1,'John','John-email')
INSERT @YourTable VALUES (2,'John','John-email')
INSERT @YourTable VALUES (3,'fred','John-email')
INSERT @YourTable VALUES (4,'fred','fred-email')
INSERT @YourTable VALUES (5,'sam','sam-email')
INSERT @YourTable VALUES (6,'sam','sam-email')

SELECT
    name,email, COUNT(*) AS CountOf
    FROM @YourTable
    GROUP BY name,email
    HAVING COUNT(*)>1

-1

Source: stackoverflow.com

Similar codes

-1 vote118 views1 answer
Splice typescript array
TypeScript
0 vote105 views1 answer
Elements without corner css
TypeScript
0 vote105 views1 answer
Onblur vs valuechange
TypeScript
1 vote113 views1 answer
Adding paragraphs with foreach in angular docx.js
TypeScript
-1 vote114 views1 answer
Components of http request
TypeScript
1 vote106 views1 answer
Whats my country
TypeScript
0 vote102 views1 answer
Java objects cannot change?
TypeScript
0 vote105 views1 answer
"Which of the following is the best description of the interior structure of a highly evolved high-mass star late in its lifetime but before the collapse of its iron core?"
TypeScript
0 vote105 views2 answers
Array objects to array of one property
TypeScript
0 vote116 views1 answer
Request exceeded the limit of 10 internal redirects due to probable configuration error
TypeScript