rename_columns

The rename_columns method creates a new table with specified columns renamed.

Syntax

rename_columns(cols: Union[str, Sequence[str]]) -> Table

Parameters

ParameterTypeDescription
colsUnion[str, Sequence[str]]

Columns that will be renamed in the new table.

  • "X = Y" will rename source column Y to X.

Returns

A new table that renames the specified columns.

Examples

The following example renames columns A and C:

from deephaven import new_table
from deephaven.column import string_col, int_col

source = new_table(
    [
        string_col("A", ["apple", "apple", "orange", "orange", "plum", "plum"]),
        int_col("B", [1, 1, 2, 2, 3, 3]),
        string_col(
            "C", ["Macoun", "Opal", "Navel", "Cara Cara ", "Greengage", "Mirabelle"]
        ),
        int_col("D", [1, 2, 12, 3, 2, 3]),
    ]
)

result = source.rename_columns(cols=["Fruit = A", "Type = C"])