/TypeScript/How to get duplicate values in sql

How to get duplicate values in sql

Select duplicates in sql

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

Source: chartio.com

Sql query to find duplicates in column

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

Source: stackoverflow.com

Sql count duplicate rows

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

T-sql get duplicate rows

SELECT [CaseNumber], COUNT(*) AS Occurrences
FROM [CaseCountry]
GROUP BY [CaseNumber]
HAVING (COUNT(*) > 1)

How to get duplicate values 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

5 votes118 views2 answers
Array.prototype.map() expects a return value from arrow function array-callback-return react
TypeScript
2 votes124 views1 answer
No suitable injection token for parameter 'path' of class 'BaseModel'
TypeScript
1 vote122 views1 answer
@angular/fire/angularfire2.d.ts:37:49 - error TS2344: Type 'T[K]' does not satisfy the constraint '(...args: any) => any
TypeScript
0 vote99 views1 answer
Pandas get count of pair of elements in two columns
TypeScript
21 votes110 views2 answers
Typescript array insert
TypeScript
6 votes103 views1 answer
Timeout typescript
TypeScript
1 vote124 views1 answer
Node_modules/angularx-flatpickr/flatpickr.module.d.ts:6:64 - error TS2314: Generic type 'ModuleWithProviders<T>' requires 1 type argument(s).
TypeScript
0 vote142 views1 answer
How to add alias to my hosts in ansible hosts
TypeScript
11 votes105 views1 answer
Properties of all electromagnetic waves
TypeScript
0 vote157 views1 answer
Angular calculate difference between two dates
TypeScript