“SQL Union” Kode Jawaban

SQL Union

-- 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;

Operator SQL Union

SELECT column_name(s) FROM table1
UNION
SELECT column_name(s) FROM table2;

SQL Union

SELECT age
FROM Teachers
UNION
SELECT age
FROM Students;

ActionScript

“SQL Union” Kode Jawaban

SQL Union

Operator SQL Union

SQL Union

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