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SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
Guide to SQL: SyntaxThe HCL OneDB™ Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the HCL OneDB™ dialect of the SQL language.
Data types and expressionsThese topics describe the data types and expressions that HCL OneDB™supports.
Expression
Function Expressions
Trigonometric FunctionsThe built-in trigonometric functions calculate ratios of the lengths of the sides of right triangles. Two supporting functions, DEGREES and RADIANS, can respectively convert the units of angular values from radians to degrees, and from degrees to radians.
ATAN FunctionThe ATAN function returns the arc tangent of a numeric expression.

ATAN Function

The ATAN function returns the arc tangent of a numeric expression.

The following example returns the arc tangent of the value (-0.73) in radians:

SELECT ATAN(-0.73) FROM anglestbl;