Technology · Reference dataset
SQL Server String Functions
SQL Server string functions and descriptions of their uses.
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The 10 most recently added of 30 records · Select a column heading to sort.
| ID | Function | Description |
|---|---|---|
| 30 | UPPER | Converts a string to upper-case |
| 29 | UNICODE | Returns the Unicode value for the first character of the input expression |
| 28 | TRIM | Removes leading and trailing spaces (or other specified characters) from a string |
| 27 | TRANSLATE | Returns the string from the first argument after the characters specified in the second argument are translated into the characters specified in the third argument. |
| 26 | SUBSTRING | Extracts some characters from a string |
| 25 | STUFF | Deletes a part of a string and then inserts another part into the string, starting at a specified position |
| 24 | STR | Returns a number as string |
| 23 | SPACE | Returns a string of the specified number of space characters |
| 22 | SOUNDEX | Returns a four-character code to evaluate the similarity of two strings |
| 21 | RTRIM | Removes trailing spaces from a string |
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Scope and sources
Last checked against sources: October 15, 2026.
Last changed: July 17, 2026. This is when we last changed the data or its description. It doesn’t mean the data runs up to that date.
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