FALSE if it doesn’t match, or TRUE if it matches.
Syntax
Parameters
| Parameter | Description | Supported input types |
|---|---|---|
<expression> | The input string or column to be evaluated against the regular expression patterns. | TEXT |
<pattern> | A list of regular expression patterns to match against the expression. | ARRAY[TEXT] where each element complies to the RE2 regular expression syntax |
Return Type
BOOLEAN
Examples
The following code example checks whether the string123 matches either the [a-z] expression, which specifies any lowercase letter, or the [1-9]+ expression, which specifies one or more digits:
TRUE because the string '123' matches the second pattern.
The following code example checks whether the string !@#$%^&*() matches either the \d+ expression, which specifies one or more digits, or the [a-z|A-Z]+ expression, which specifies one or more lowercase or uppercase characters:
FALSE because the string does not match any of the regular expressions in the array.
The following code example checks if the string a matches either the [1-9]+ expression, which specifies one or more digits, or a NULL value:
123 matches either the [1-9]+ expression, which specifies one or more digits, or the NULL value, in the array.
TRUE because the string matches the first regular expression. The NULL element does not affect the result as long as a match is found. If a match is not found, the function returns FALSE, even if there is a NULL element in the array.