SQL character function

character function

A character or string function is a function which takes one or more characters or numbers as parameters and returns a character value. Basic string functions offer a number of capabilities and return a string value as a result set.

SQL character functions are:

Functions Description
lower() The SQL LOWER() function is used to convert all characters of a string to lower case.
upper() The SQL UPPER() function is used to convert all characters of a string to uppercase.
trim() The SQL TRIM() removes leading and trailing characters(or both) from a character string.
translate() The SQL TRANSLATE() function replaces a sequence of characters in a string with another sequence of characters. The function replaces a single character at a time.

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