get_regex_all

Description

Returns an array containing all parts of the argument string that match the given regular expression (which may be empty if nothing matches.) There are two optional parameters: a capture group parameter to specify which group to capture and a string parameter to specify flags:

• c - Enables case-sensitive matching (default.)

• i - Enables case-insensitive matching.

• m - Enables multi-line mode (i.e. meta-characters ^ and $ match the beginning and end of any line of the input string.) By default, multi-line mode is disabled (i.e. ^ and $ match the beginning and end of the entire input string.)

• s - Enables the POSIX wildcard character . to match \n (newline.) By default, . does not match \n.

For more about regular expression syntax, see POSIX extended regular expressions.

This function returns null for the empty regular expression "" for all inputs. However, for the empty group regular expression "()", it returns an array containing all the empty space "" between characters for all valid inputs except null. It returns null in case of null or invalid arguments, or any other error.

Return type

array

Domain

This is a scalar function (calculates a single output value for a single input row.)

Categories

• Regex

• Semistructured

Usage

get_regex_all(input_string, pattern, [ group ], [ flags ])

Argument	Type	Optional	Repeatable	Restrictions
input_string	variant	no	no	none
pattern	regex	no	no	constant
group	int64	yes	no	constant
flags	string	yes	no	constant

Examples

make_col dotted_quads:get_regex_all(log, /[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/)

Extract all occurrences of four numbers (length 1-3 digits) separated by periods, from the input column log, into an array column named dotted_quads. If no such quads exist in the input log, then an empty array is the result.

Aliases

match_regex_all (deprecated)