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Numeric functions
This topic describes numeric functions that are included in the ODBC scalar function set.
Applications can call SQLGetInfo with the SQL_NUMERIC_FUNCTIONS information type to determine which numberic functions are supported by a driver.
Except for ABS, ROUND, TRUNCATE, SIGN, FLOOR, and CEILING (which return values of the same data type as the input parameters), all numeric functions return values of data type SQL_FLOAT.
Arguments
The following table details the numeric function argument types:
 
Argument type
Definition
numeric_exp
These arguments can be the name of a column, the result of another scalar function, or a numeric literal, where the underlying data type could be represented as SQL_NUMERIC, SQL_DECIMAL, SQL_TINYINT, SQL_SMALLINT, SQL_INTEGER, SQL_BIGINT, SQL_FLOAT, SQL_REAL, or SQL_DOUBLE
float_exp
These arguments can be the name of a column, the result of another scalar function, or a numeric literal, where the underlying data type can be represented as SQL_FLOAT.
integer_exp
These arguments can be the name of a column, the result of another scalar function, or a numeric literal, where the underlying data type can be represented as SQL_TINYINT, SQL_SMALLINT, SQL_INTEGER, or SQL_BIGINT
Function list
The following table details the numeric functions:
 
Function
Description
ABS(numeric_exp)
(ODBC 1.0)
Returns the absolute value of numeric_exp.
ACOS(float_exp)
(ODBC 1.0)
Returns the arccosine of float_exp as an angle, expressed in radians.
ASIN(float_exp)
(ODBC 1.0)
Returns the arcsine of float_exp as an angle, expressed in radians.
ATAN(float_exp)
(ODBC 1.0)
Returns the arctangent of float_exp as an angle, expressed in radians.
ATAN2(float_exp1, float_exp2)
(ODBC 2.0)
Returns the arctangent of the x and y coordinates, specified by float_exp1 and float_exp2, respectively, as an angle, expressed in radians.
CEILING(numeric_exp)
(ODBC 1.0)
Returns the smallest integer greater than or equal to numeric_exp. The return value is of the same data type as the input parameter.
COS(float_exp)
(ODBC 1.0)
Returns the cosine of float_exp, where float_exp is an angle expressed in radians.
COT(float_exp)
(ODBC 1.0)
Returns the cotangent of float_exp, where float_exp is an angle expressed in radians.
DEGREES(numeric_exp)
(ODBC 2.0)
Returns the number of degrees converted from numeric_exp radians.
EXP(float_exp)
(ODBC 1.0)
Returns the exponential value of float_exp.
FLOOR(numeric_exp)
(ODBC 1.0)
Returns largest integer less than or equal to numeric_exp. The return value is of the same data type as the input parameter.
LOG(float_exp)
(ODBC 1.0)
Returns the natural logarithm of float_exp.
LOG10(float_exp)
(ODBC 2.0)
Returns the base 10 logarithm of float_exp.
MOD(integer_exp1, integer_exp2)
(ODBC 1.0)
Returns the remainder (modulus) of integer_exp1 divided by integer_exp2.
PI( )
(ODBC 1.0)
Returns the constant value of pi as a floating point value.
POWER(numeric_exp, integer_exp)
Returns the value of numeric_exp to the power of integer_exp.
RADIANS(numeric_exp)
(ODBC 2.0)
Returns the number of radians converted from numeric_exp degrees.
ROUND(numeric_exp, integer_exp)
(ODBC 2.0)
Returns numeric_exp rounded to integer_exp places right of the decimal point. If integer_exp is negative, numeric_exp is rounded to |integer_exp| places to the left of the decimal point.
SIGN(numeric_exp)
(ODBC 1.0)
Returns an indicator or the sign of numeric_exp. If numeric_exp is less than zero, -1 is returned. If numeric_exp equals zero, 0 is returned. If numeric_exp is greater than zero, 1 is returned.
SIN(float_exp)
(ODBC 1.0)
Returns the sine of float_exp, where float_exp is an angle expressed in radians.
SQRT(float_exp)
(ODBC 1.0)
Returns the square root of float_exp.
TAN(float_exp)
(ODBC 1.0)
Returns the tangent of float_exp, where float_exp is an angle expressed in radians.
TRUNCATE(numeric_exp, integer_exp)
(ODBC 2.0)
Returns numeric_exp truncated to integer_exp places right of the decimal point. If integer_exp is negative, numeric_exp is truncated to |integer_exp| places to the left of the decimal point.
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ODBC: Scalar functions