- Description: Returns the position of a pattern in a string using regex.
- Purpose: Advanced searching within strings.
- Syntax:
REGEXP_INSTR(string, pattern, [start_position], [match_occurrence], [return_option])
- Parameters:
string: The main string to search.pattern: The regex pattern to search for.start_position: Where to start searching.match_occurrence: Which occurrence to find.return_option: Return options (1 for start, 0 for end).
- Returns: Position of the match or
0 if not found.
- Example:
REGEXP_INSTR('abc123', '[0-9]') returns 4.
- Notes: Flexible pattern searching.
- Use Case: Extracting numeric parts from mixed strings.
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