graph-lakehouse
File Source Format Options
For file sources, you can include the format property to list additional parameters that describe the source. The supported format parameters are described below.
s:format [ s:delimiter "string" ; s:headers boolean ; s:columns "string" ; s:start int ; s:skip int ; s:comment "string" ; s:quote "string" ; s:escape "string" ; s:maxColumns int ; s:segment boolean ; ] ;
| Option | Type | Description |
|---|---|---|
| delimiter | string | This property specifies the string that is used to delimit columns in the file(s). For example, `s:delimiter " |
| headers | boolean | This property indicates whether or not the file(s) include headers. By default the headers value is true (s:headers true). For files that do not have headers, specify s:headers false. |
| columns | string | If you want the GDI to target only certain columns in the source file(s), you can include the columns property to list the names of columns to include. The value is a single string that is a comma-separated list. For example, s:columns "employee_id, name, address, start date, title". |
| start | int | If the file includes headers that take up more than one row, include the start property to specify the row number where the data starts to exclude headers. For example, s:start 8. |
| skip | int | This property can be used to specify the number of rows/records to skip before reading or ingesting the file(s). By default, skip is set to 0 (s:skip 0). |
| comment | string | This property specifies the string that is used as the comment character in the file(s). The comment value is set to # by default (s:comment "#"). |
| quote | string | This property is used to specify the string that is used as the quote character. |
| escape | string | This property is used to specify the escape string that is used in the file(s). For example, s:escape "\". |
| maxColumns | int | This property can be used to set a limit on the maximum number of columns to read or ingest. The maxColumns property is set to -1 (unlimited) by default (s:maxColumns -1). |
| segment | boolean | This property indicates whether or not the file(s) can be segmented. For example, some CSV files that contain embedded newlines cannot be segmented. By default, segment is not set. |
Source: https://docs.sw.siemens.com/documentation/external/PL20260518131381558/en-US/html/gdi-file-format.htm · retrieved 2026-08-23