rename_columns

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

Syntax

table.rename_columns(cols=[columnNames...])

Parameters

Parameter	Type	Description
columnNames	String...	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"])

source

result

Related documentation

• Create a new table
• drop_columns
• lazy_update
• select
• update_view
• Javadoc
• Pydoc