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UPPER
UPPER
Syntax
136
• The result is of type CHARACTER.
• If the argument expression evaluates to NULL, the result is NULL.
• A char_expression and the result can contain multi-byte characters. The uppercase
conversion is determined by the case table in the convmap file. The default case table is
BASIC.
Compatibility
ODBC compatible
Returns the result of the argument character expression after converting all the characters to
uppercase.
Example This example illustrates the UPPER function, returning columns from rows in the customer table
where the last_name column, after being converted to uppercase, is equal to ‘SMITH’:
Notes • The argument to the function must be of type CHARACTER.
USER
UPPER ( char_expression )
SELECT *
FROM customer
WHERE UPPER (last_name) = 'SMITH' ;
• The result is of type CHARACTER.
• If the argument expression evaluates to NULL, the result is NULL.
• A char_expression and the result can contain multi-byte characters. The uppercase
conversion is determined by the case table in the convmap file. The default case table is
BASIC.
Compatibility
SQL compatible
Returns a character-string identifier for the user of the current transaction, as determined by the
host operating system. This function takes no arguments, and the trailing parentheses are
optional.