sql substring
-- substr(string, start, [, length ])
SELECT substr('Hello World', 1, 3) ; -- Hel
SELECT substr('Hello World', 4, 5) ; -- lo Wo
SELECT substr('Hello World', 4); -- lo World
SELECT substr('Hello World', -3); -- rldsubstring sql
SELECT SUBSTR(first_name, 0 , 3)
From employees;subquery in sql
UPDATE dataflair_emp1
SET salary=35000
WHERE emp_id = ( SELECT emp_id
FROM dataflair_emp1
WHERE post='Sr.Manager');
select * from dataflair_emp1;Copyright © 2021 Codeinu
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