15.00 - DEGREESRADIANS - Teradata Database

Teradata Database SQL Functions, Operators, Expressions, and Predicates

Product
Teradata Database
Release Number
15.00
Content Type
Programming Reference
Publication ID
B035-1145-015K
Language
English (United States)
Last Update
2018-09-24

DEGREES
RADIANS

Purpose  

DEGREES takes a value specified in radians and converts it to degrees.

RADIANS takes a value specified in degrees and converts it to radians.

Syntax  

where:

 

Syntax element …

Specifies …

arg

 

 

 

 

a numeric expression.

  • If the function is DEGREES, the arg is interpreted as an angle in radians.
  • If the function is RADIANS, the arg is interpreted as an angel in degrees.
  •  

    ANSI Compliance

    This is a Teradata extension to the ANSI SQL:2011 standard.

    Result Title

    The following table lists the default titles for DEGREES(arg) and RADIANS(arg).

     

    Function

    Title

    DEGREES(arg)

    (5.72957795130823E001*arg)

    RADIANS(arg)

    (1.74532925199433E-002*arg)

    Result Type and Format

    Here are the result type and format of DEGREES and RADIANS.

  • If the operand is numeric, the format is the default format for the resulting data type.
  • If the operand is character, the format is the default format for FLOAT
  • If the operand is a UDT, the format is the default format for the predefined type to which the UDT is implicitly cast
  • Note: The NULL keyword has a data type of INTEGER.

    For information on data type formats, see SQL Data Types and Literals.

    Argument Types and Rules

    If the argument is not numeric, it is converted to a numeric value, based on implicit type conversion rules. If the argument cannot be converted, an error is reported. For more information on implicit type conversion, see “Implicit Type Conversions” on page 583.

    If arg is a character string, it is converted to a numeric value of the FLOAT data type.

    If arg is a UDT, the following rules apply:

  • The UDT must have an implicit cast to any of the following predefined types:
  • Numeric
  • Character
  • DateTime
  • Interval
  • To define an implicit cast for a UDT, use the CREATE CAST statement and specify the AS ASSIGNMENT clause. For more information on CREATE CAST, see SQL Data Definition Language.

  • Implicit type conversion of UDTs for system operators and functions, including DEGREES and RADIANS, is a Teradata extension to the ANSI SQL standard. To disable this extension, set the DisableUDTImplCastForSysFuncOp field of the DBS Control Record to TRUE. For details, see Utilities: Volume 1 (A-K).
  • Neither DEGREES nor RADIANS can be applied to the following types of arguments:

  • BYTE or VARBYTE
  • BLOB or CLOB
  • CHARACTER or VARCHAR if the server character set is GRAPHIC
  • Usage Notes  

    DEGREES and RADIANS are useful when working with trigonometric functions such as SIN and COS, which expect arguments to be specified in radians, and inverse trigonometric functions such as ASIN and ACOS, which return values specified in radians.

     

     

     

     

    Examples  

    Representative DEGREES and RADIANS function expressions and the results are as follows.

     

    Expression

    Result

    SIN(RADIANS(60.0))

    8.66025403784439E-001

    DEGREES(1.0)

    5.72957795130823E 001