Answers for "what is the use of union in sql"

-- UNION: distinct values (slower)
SELECT emp_name AS name from employees
UNION       
SELECT cust_name AS name from customers;

-- UNION ALL: keeps duplicates (faster)
SELECT emp_name AS name from employees
UNION ALL      
SELECT cust_name AS name from customers;

Posted by: Guest on April-22-2021

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Answers for "what is the use of union in sql"

Code answers related to "what is the use of union in sql"

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Answers for "what is the use of union in sql"

Code answers related to "what is the use of union in sql"

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