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LENGTH
Notes • string_exp can be fixed-length or variable-length CHARACTER data types.
LENGTH
Syntax
102
• count can be INTEGER, SMALLINT, or TINYINT data types.
• If any of the arguments of the expression evaluate to NULL, the result is NULL.
• If the count is negative, the result evaluates to NULL.
• The string_exp and the result can contain multi-byte characters. The function returns the
number of characters.
Compatibility
ODBC compatible
Returns the string length of the value of the given character expression.
Example This example illustrates the LENGTH function:
Notes • The argument to the function must be of type CHARACTER or VARCHAR.
LOCATE
LENGTH ( char_expression )
SELECT last_name 'LONG LAST_NAME'
FROM customer
WHERE LENGTH (last_name) > 5 ;
• The result is of type INTEGER.
• If the argument expression evaluates to NULL, the result is NULL.
• char_expression can contain multi-byte characters. The function returns a number of
characters.
Compatibility
ODBC compatible
Returns the location of the first occurrence of char_expr1 in char_expr2. If the function
includes the optional integer argument start_pos, LOCATE begins searching char_expr2 at that
position. If the function omits the start_pos argument, LOCATE begins its search at the
beginning of char_expr2.