Designer Cloud Enterprise Edition supports the following types of text matching clauses:
- String literals match specified strings exactly. Written using single quotes ('...') or double quotes ("...").
Regular expressions enable pattern-based matching. Regular expressions are written using forward slashes (/.../). The syntax is based on RE2 and PCRE regular expressions.
NOTE: Regular expressions are considered a developer-level capability and can have significant consequences if they are improperly specified. Unless you are comfortable with regular expressions, you should use Alteryx patterns instead.
Alteryx patterns are custom selectors for patterns in your data and provide a simpler and more readable alternative to regular expressions. They are written using backticks (`...`).
The following are example Alteryx patterns:
Tip: After using Alteryx patterns, regular expressions, or string literals in a recipe step, you can reuse them in your transformations where applicable. See Pattern History Panel.
| Pattern | Description |
|---|---|
| % | match any character, exactly once |
| %? | match any character, zero or one times |
| %* | match any character, zero or more times |
| %+ | match any character, one or more times |
| %{3} | match any character, exactly three times |
| %{3,5} | match any character, 3, 4, or 5 times |
| # | digit character [0-9] |
| {any} | match any character, exactly once |
| {start} | match the start of the line |
| {end} | match the end of the line |
| {alpha} | alpha character [A-Za-z_] |
| {upper} | uppercase alpha character [A-Z_] |
| {lower} | lowercase alpha character [a-z_] |
| {digit} | digit character [0-9] |
| {delim} | single delimiter character e.g :, ,, |, /, -, ., \s |
| {delim-ws} | single delimiter and all the whitespace around it |
| {alpha-numeric} | match a single alphanumeric character |
| {alphanum-underscore} | match a single alphanumeric character or underscore character |
| {at-username} | match @username values |
| {hashtag} | match #hashtag values |
| {zip}, {hex}, {phone}, {email} | extensible types, as regexes |
| {state}, {state-abbrev} | extensible types continued |
| {month}, {month-abbrev}, {url} | extensible types continued |
| {ip-address}, {hex-ip-address} | extensible types continued |
| {time}, {bool} | extensible types continued |
| {[...]} | character class matches characters in brackets |
| {![...]} | negated class matches characters not in brackets |
| (...) | grouping, including captures |
| #, %, ?, *, +, {, }, (, ), \, ’, \n, \t | escaped characters or pattern modifiers Use a double backslash (\\) to denote an escaped string literal. For more information, see Escaping Strings in Transforms. |
| | | logical OR |
- Logical AND is the implied operator when you concatenate text matching patterns.
- Logical NOT is managed using negated classes.
See also Capture Group References.
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