Documentation

SQL regular expression functions

The InfluxDB SQL implementation uses the POSIX regular expression syntax and supports the following regular expression functions:

regexp_match

Returns a list of regular expression matches in a string.

regexp_match(str, regexp, flags)
Arguments
  • str: String expression to operate on. Can be a constant, column, or function, and any combination of string operators.
  • regexp: Regular expression to match against. Can be a constant, column, or function.
  • flags: Regular expression flags that control the behavior of the regular expression. The following flags are supported.
    • i: (insensitive) Ignore case when matching.

View regexp_replace query example

regexp_replace

Replaces substrings in a string that match a regular expression.

regexp_replace(str, regexp, replacement, flags)
Arguments
  • str: String expression to operate on. Can be a constant, column, or function, and any combination of string operators.
  • regexp: Regular expression to match against. Can be a constant, column, or function.
  • replacement: Replacement string expression. Can be a constant, column, or function, and any combination of string operators.
  • flags: Regular expression flags that control the behavior of the regular expression. The following flags are supported.
    • g: (global) Search globally and don’t return after the first match.
    • i: (insensitive) Ignore case when matching.

View regexp_replace query example


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