| --- |
| title: Transforming with GPLOAD |
| --- |
| |
| To transform data using the `GPLOAD ` control file, you must specify both the file name for the `TRANSFORM_CONFIG` file and the name of the `TRANSFORM` operation in the `INPUT` section of the `GPLOAD` control file. |
| |
| - `TRANSFORM_CONFIG `specifies the name of the `gpfdist` configuration file. |
| - The `TRANSFORM` setting indicates the name of the transformation that is described in the file named in `TRANSFORM_CONFIG`. |
| |
| ``` pre |
| --- |
| VERSION: 1.0.0.1 |
| DATABASE: ops |
| USER: gpadmin |
| GPLOAD: |
| INPUT: |
| - TRANSFORM_CONFIG: config.yaml |
| - TRANSFORM: prices_input |
| - SOURCE: |
| FILE: prices.xml |
| ``` |
| |
| The transformation operation name must appear in two places: in the `TRANSFORM` setting of the `gpfdist` configuration file and in the `TRANSFORMATIONS` section of the file named in the `TRANSFORM_CONFIG` section. |
| |
| In the `GPLOAD` control file, the optional parameter `MAX_LINE_LENGTH` specifies the maximum length of a line in the XML transformation data that is passed to hawq load. |
| |
| The following diagram shows the relationships between the `GPLOAD` control file, the `gpfdist` configuration file, and the XML data file. |
| |
| <img src="../../images/03-gpload-files.jpg" class="image" width="415" height="258" /> |
| |
