extractParseAnchor
Extract a token matching a pattern.
Compare a pattern (custom regex) to a string then return the Nth token, where N is specified as part of the input. This function improves readability of a pattern that contains only '*'. It doesn't do extensive regex.
Usage Details
select extractParseAnchor(column, pattern, '$N') as resultCol from table
Input:
table: Input table.
pattern: Parameter, a custom regex pattern like "logiccom" (same as "^logic.com$" in Java).
column: Column name to match pattern.
$N: Extract Nth token.
Output:
Returns Nth token
Example
Input
table
| sourcePort |
|---|
| 'A emil B logic C' |
| 'A test B util' |
select *, extractParseAnchor(col, 'A * B * C', '$2') as a result from table
Output
| sourcePort | result |
|---|---|
| 'A emil B logic C' | emil |
| 'A test B util' | test |
Updated about 1 year ago