类别：: :doc:`/sql-reference/functions-numeric`（指数和根）

CBRT¶

返回数值表达式的立方根。

语法¶

CBRT( <input_expr> )

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Returns¶

If the input expression is of type DECFLOAT, the returned type is DECFLOAT. Otherwise, the returned type is FLOAT.

示例¶

SELECT x, CBRT(x) FROM tab;

--------+-------------+
   x    |   cbrt(x)   |
--------+-------------+
 0      | 0           |
 2      | 1.25992105  |
 -10    | -2.15443469 |
 [NULL] | [NULL]      |
--------+-------------+

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