A character string.
Converts a character string to uppercase.
UPPER() converts all the text in a Input_String to uppercase.
upper("ibm") -> "IBM" upper(FIRSTNAME) ->"BEVERLY", if FIRSTNAME contains "Beverly"
To locate records in a table, you may often need to create search criteria that is not case sensitive. The following filter expression finds matching records, regardless of the case in which the data was entered:
upper(COMPANY) = "FRANKLIN'S TOWER BAKERY"