String Functions

Transact-SQL Reference

Transact-SQL Reference

String Functions

These scalar functions perform an operation on a string input value and return a string or numeric value.

ASCII NCHAR SOUNDEX
CHAR PATINDEX SPACE
CHARINDEX REPLACE STR
DIFFERENCE QUOTENAME STUFF
LEFT REPLICATE SUBSTRING
LEN REVERSE UNICODE
LOWER RIGHT UPPER
LTRIM RTRIM  

All built-in string functions, except for CHARINDEX and PATINDEX, are deterministic. They return the same value any time they are called with a given set of input values. For more information about function determinism, see Deterministic and Nondeterministic Functions.

See Also

Functions