
LTRIM stands for left trim, and it trims blank spaces occurring on the
left side of a given string.
LTRIM(string)
select ltrim(' smith');
------------------------ smith
select ltrim('Hello');
------------------- Hello

In MySQL the LTRIM function also does the same job. i.e. it trims any blank spaces from the left side of a given string.
LTRIM(string)
mysql> select ltrim(' smith');
+-------------------+
| ltrim(' smith') |
+-------------------+
| smith |
+-------------------+
1 row in set (0.00 sec)
mysql> select ltrim('Hello');
+----------------+
| ltrim('Hello') |
+----------------+
| Hello |
+----------------+
1 row in set (0.00 sec)
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