snowflake.snowpark.functions.regr_valy

snowflake.snowpark.functions.regr_valy(y: Union[snowflake.snowpark.column.Column, str], x: Union[snowflake.snowpark.column.Column, str]) → Column[source]

Returns the y value for each row where x is not None. If x is None, returns None. This function is used in linear regression calculations to get the dependent variable values for valid data points.

Parameters:

  • y (ColumnOrName) – The dependent variable column or column name.

  • x (ColumnOrName) – The independent variable column or column name.

Returns:

A column containing the y values where x is not None, None otherwise.

Return type:

Column

Examples::
>>> from snowflake.snowpark.functions import col
>>> df = session.create_dataframe([(2.0, 1.0), (None, 3.0), (6.0, None)], schema=["col_y", "col_x"])
>>> df.select(regr_valy(col("col_y"), col("col_x")).alias("result")).collect()
[Row(RESULT=2.0), Row(RESULT=None), Row(RESULT=None)]
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Linguagem: Português