Tableau – String Functions
Tableau Function Categories Tableau – String Functions Category: String functions String functions in Tableau are built-in operations that allow users to manipulate, transform, and analyze text or string-based data. They
Category: String functions
String functions in Tableau are built-in operations that allow users to manipulate, transform, and analyze text or string-based data. They help in extracting substrings, combining text, formatting strings, and performing pattern-based operations on textual data.
Purpose
The primary purpose of string functions in Tableau is to:
Enable manipulation and transformation of textual data for better analysis.
Extract meaningful information from string fields, such as IDs, codes, or names.
Clean and standardize text data to ensure consistency.
Combine or split text fields for reporting, visualization, and calculated fields.
Practical Use Cases
Data Cleaning: Remove extra spaces, standardize capitalization, or correct text errors.
Reporting: Combine first and last names or create formatted identifiers.
Text Analysis: Extract domains from email addresses or parse product codes.
Dashboard Labels: Dynamically generate labels or tooltips with concatenated values.
Advanced Analytics: Use regex to filter, replace, or extract patterns in text data.
| Function | Description |
|---|---|
| ASCII | Returns the ASCII numeric code corresponding to the first character in a given string. |
| CHAR | Returns the character that matches the specified ASCII code number. |
| CONTAINS | Checks whether a given string includes a specified substring and returns true if it does. |
| ENDSWITH | Returns true if a string ends with the specified substring. Any spaces at the end are ignored. |
| FIND | Returns the position (index) of a substring within a string, starting from 1. Returns 0 if the substring is not found. You can optionally specify a starting position to skip earlier occurrences. |
| FINDNTH | Returns the position of the nth occurrence of a substring within a string, as defined by the occurrence argument. |
| LEFT | Returns the specified number of characters from the left side of a string. |
| LEN | Returns the total number of characters in a string. |
| LOWER | Converts all characters in the given string to lowercase. |
| LTRIM | Removes any spaces from the beginning (left side) of a string. |
| MAX | Returns the larger of two values that share the same data type. Can also be used as an aggregate function on a single field. |
| MID | Extracts a substring starting at a specified position. Optionally, you can define how many characters to return. The first character in the string is position 1. |
| MIN | Returns the smaller of two values that share the same data type. Can also be used as an aggregate function on a single field. |
| PROPER | Converts a string so that each word starts with a capital letter and all remaining letters are lowercase. |
| REPLACE | Searches a string for a specific substring and replaces it with another string. If the substring isn’t found, the original string remains unchanged. |
| RIGHT | Returns the specified number of characters from the right side of a string. |
| RTRIM | Removes any spaces from the end (right side) of a string. |
| SPACE | Returns a string consisting of a specified number of space characters. |
| SPLIT | Divides a string into parts using a specified delimiter and returns one of the resulting segments. |
| STARTSWITH | Returns true if a string begins with the specified substring. Leading spaces are ignored. |
| TRIM | Removes spaces from both the beginning and the end of a string. |
| UPPER | Converts all characters in the given string to uppercase. |
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String functions are operations that manipulate and analyze text or string data in Tableau.
You can use + or CONCAT(string1, string2) to merge two or more text fields.
Yes, functions like LEFT(), RIGHT(), and MID() allow substring extraction.
How do I standardize text capitalization in Tableau?
Use UPPER(), LOWER(), or PROPER() to change text case consistently.
Functions like TRIM(), LTRIM(), RTRIM(), and REPLACE() remove spaces or correct text errors.