substring based on character in sql server code example

Example 1: sql server substring

SELECT SUBSTRING('SQL Tutorial', 1, 3) AS ExtractString;

Example 2: sql substring

-- substr(string, start, [, length ])
SELECT substr('Hello World', 4, 5) ;      -- lo Wo
SELECT substr('Hello World', 4);          -- lo World
SELECT substr('Hello World', -3);         -- rld