instr function
Applies to:  Databricks SQL 
 Databricks Runtime
Returns the (1-based) index of the first occurrence of substr in str.
Syntax
instr(str, substr)
Arguments
- str: A- STRINGexpression.
- substr: A- STRINGexpression.
Returns
A BIGINT.
If substr cannot be found the function returns 0.
Examples
SQL
> SELECT instr('SparkSQL', 'SQL');
 6
> SELECT instr('SparkSQL', 'R');
 0
> SELECT instr('SparkSQL' COLLATE UTF8_LCASE, 'sql');
 6
> SELECT instr('SparkSQL' COLLATE UTF8_BINARY, 'sql');
 6