ltrim function
Applies to:  Databricks SQL 
 Databricks Runtime
Returns str with leading characters within trimStr removed.
Syntax
ltrim( [trimstr ,] str)
Arguments
- trimstr: An optional- STRINGexpression with the string to be trimmed.
- str: A- STRINGexpression from which to trim.
Returns
A STRING.
The default for trimStr is a single space.
The function removes any leading characters within trimStr from str.
Examples
SQL
> SELECT '+' || ltrim('    SparkSQL   ') || '+';
 +SparkSQL   +
> SELECT '+' || ltrim('abc', 'acbabSparkSQL   ') || '+';
 +SparkSQL   +
> SELECT '+' || ltrim('ABC' COLLATE UTF8_BINARY, 'acbabSparkSQL   ') || '+';
 +acbabSparkSQL   +
> SELECT '+' || ltrim('ABC' COLLATE UTF8_LCASE, 'acbabSparkSQL   ') || '+';
 +SparkSQL   +