The MySQL String Substr function is a synonym of a Substring function that returns a substring. The Substr also allows you to place negative values as the Position argument. If you use negative values, then it starts looking from the end to the start position.
The basic syntax of the Substr string is as shown below.
SELECT SUBSTR(Str, Position) FROM Source SELECT SUBSTR(Str FROM Position) FROM Source SELECT SUBSTR(Str, Position, Length) FROM Source SELECT SUBSTR(Str FROM Position FOR Length) FROM Source
MySQL String Substr function Example
The following query shows multiple ways to use this substr function.
SELECT SUBSTR('MySQL Tutorial', 7) AS Substr1;
SELECT SUBSTR('MySQL Tutorial' FROM 9) AS Substr2;
SELECT SUBSTR('MySQL Tutorial', 3, 14) AS Substr3;
SELECT SUBSTR('MySQL Tutorial' FROM 3 FOR 11) AS Substr4;
In this MySQL example, we use the -ve values as the argument position. I suggest you refer to the Substring function article to understand this substr function.
SELECT SUBSTRING('Tutorial Gateway', -7) AS Substr1;
SELECT SUBSTRING('Tutorial Gateway', -14, 8) AS Substr2;
