Expr.sqrt

methodView source ↗

def sqrt() -> TdExpr

Categories: numeric

Calculate the square root of the element value.

Examples

>>> import tabsdata as td
>>>
>>> tf: td.TableFrame ...
>>>
>>> tf.select(td.col("val"), td.col("val").sqrt().alias("sqrt"))
>>>
┌──────┬──────────┐
│ val  ┆ sqrt     │
│ ---  ┆ ---      │
│ f64  ┆ f64      │
╞══════╪══════════╡
│ 1.0  ┆ 1.0      │
│ 2.0  ┆ 1.414214 │
│ NaN  ┆ NaN      │
│ 4.0  ┆ 2.0      │
│ 5.0  ┆ 2.236068 │
│ null ┆ null     │
└──────┴──────────┘