数学函数 (Azure Cosmos DB)Mathematical functions (Azure Cosmos DB)

适用于： SQL API

每个数学函数均执行一个计算，基于作为参数提供的输出值，并返回数值。The mathematical functions each perform a calculation, based on input values that are provided as arguments, and return a numeric value.

可以运行以下示例所示的查询：You can run queries like the following example:

    SELECT VALUE ABS(-4)

结果为：The result is:

    [4]

函数Functions

以下支持的内置数学函数通常基于输入参数执行计算，并返回数值表达式：The following supported built-in mathematical functions perform a calculation, usually based on input arguments, and return a numeric expression:

除 RAND 以外的所有数学函数都为确定性函数。All mathematical functions, except for RAND, are deterministic functions. 这意味着在每次使用特定的输入值集调用这些函数时，它们都将返回相同的结果。This means they return the same results each time they are called with a specific set of input values.

后续步骤Next steps