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ADD_MONTHS
Notes • ACOS takes the ratio (expression) of two sides of a right triangle and returns the
corresponding angle. The ratio is the length of the side adjacent to the angle divided by the
length of the hypotenuse.
ADD_MONTHS
Syntax
select acos (.5) 'Arccosine in radians' from syscalctable;
ARCCOSINE IN RADIANS
--------------------
1.047197551196598
1 record selected
select acos (.5) * (180/ pi()) 'Arccosine in degrees' from syscalctable;
ARCCOSINE IN DEGREES
--------------------
59.999999999999993
1 record selected
• The result is expressed in radians and is in the range -Pi/2 to Pi/2 radians. To convert
degrees to radians, multiply degrees by Pi/180. To convert radians to degrees, multiply
radians by 180/Pi.
• The expression must be in the range -1 to 1.
• The expression must evaluate to an approximate numeric data type.
Compatibility
ODBC compatible
Adds to the date value specified by the date_expression, the given number of months specified
by integer_expression, and returns the resultant date value.
ADD_MONTHS ( date_expression , integer_expression )
Example This example illustrates the ADD_MONTHS function:
SELECT *
FROM customer
WHERE ADD_MONTHS (start_date, 6) > SYSDATE ;
Notes • The first argument must be of DATE type.
• The second argument to the function must be of NUMERIC type.
• The result is of type DATE.
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