/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

0 vote159 views1 answer
Convert object to list of objects c#
TypeScript
0 vote136 views1 answer
Typescript post request json
TypeScript
1 vote170 views1 answer
According to all known laws of aviation
TypeScript
1 vote216 views1 answer
React native signature
TypeScript
2 votes181 views5 answers
Js create query string from object
TypeScript
0 vote157 views1 answer
Typeerror: cannot read property 'initialize' of undefined passport
TypeScript
1 vote198 views2 answers
No type arguments expected for interface ListAdapter
TypeScript
2 votes172 views1 answer
Add elements to middle of array using splice
TypeScript
-1 vote175 views1 answer
Typescript new instance of interface
TypeScript
-2 votes173 views1 answer
How to randomly generate a string in ts
TypeScript