Introduction

Data Frame

Data Frame
- Building Blocks
- Data Retrieval
- Data Manipulation
- Select/Drop
- Rename
- Map
- Filter
- Join
- Group By
  - Aggregations
- Pivot
- Window Functions
- Sort
- Limit
- Offset
- Until
- Batch Processing
- Caching
- Partitioning
- Constraints
- Schema
- Display
- Error Handling
CLI

Rename

⬅️️ Back

DataFrame provides several methods for renaming entries (columns) in your data. These operations are lazy and don't execute until a trigger operation is called.

Single Column Rename

To rename a single entry, use DataFrame::rename():

<?php 

use function Flow\ETL\DSL\{data_frame, from_array, to_output};

data_frame()
    ->read(from_array([
        ['old_name' => 'value1', 'other' => 'data1'],
        ['old_name' => 'value2', 'other' => 'data2'],
    ]))
    ->rename('old_name', 'new_name')
    ->write(to_output())
    ->run();

Batch Renaming

The renameEach() method allows you to rename multiple columns at once using various strategies:

Available Strategies

rename_style() - Changes entry names using string style conventions (camelCase, snake_case, etc.)
rename_replace() - Replaces parts of entry names using search and replace patterns

Adapters

Libraries

Bridges

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