select duplicates in sql
SELECT username, email, COUNT(*) FROM users GROUP BY username, email HAVING COUNT(*) > 1
select duplicates in sql
SELECT username, email, COUNT(*) FROM users GROUP BY username, email HAVING COUNT(*) > 1
sql query to find duplicates in column
SELECT name, COUNT(email) FROM users GROUP BY email HAVING COUNT(email) > 1
sql how to duplicate a table
CREATE TABLE new_table LIKE original_table; INSERT INTO new_table SELECT * FROM original_table;
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
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