SQL | SELECT data from Multiple Tables
SELECT tablenmae1.colunmname, tablename2.columnnmae
FROM tablenmae1
JOIN tablename2
ON tablenmae1.colunmnam = tablename2.columnnmae
ORDER BY columnname;SQL | SELECT data from Multiple Tables
SELECT tablenmae1.colunmname, tablename2.columnnmae
FROM tablenmae1
JOIN tablename2
ON tablenmae1.colunmnam = tablename2.columnnmae
ORDER BY columnname;how to select from two tables in sql
-- With JOIN
-- No row if id does not exist in t2
SELECT t1.name, t2.salary FROM t1 JOIN t2 on t1.id = t2.id;
SELECT t1.*, t2.salary FROM t1 JOIN t2 on t1.id = t2.id;
-- A row with a NULL salary is returned if id does not exist in t2
SELECT t1.name, t2.salary FROM t1 LEFT OUTER JOIN t2 on t1.id = t2.id;
-- With UNION: distinct values
SELECT emp_name AS name from employees
UNION
SELECT cust_name AS name from customers;
-- With UNION ALL: keeps duplicates (faster)
SELECT emp_name AS name from employees
UNION ALL
SELECT cust_name AS name from customers;Copyright © 2021 Codeinu
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