Updated resource docs on info for materializing empty tables #2973
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AstrakhantsevaAA
requested changes
Aug 29, 2025
| You can emit columns as a Pydantic model and use dynamic hints (i.e., lambda for table name) as well. You should avoid redefining `Incremental` this way. | ||
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| Great — here’s a tightened, clear, LLM‑friendly version that keeps your intent and adds just enough structure. |
| Sometimes you need a table to exist with no rows. Examples: | ||
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| - Prepare empty tables for downstream jobs. | ||
| - Publish a schema before data arrives. |
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link "Adjust schema" here
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| Then define the resource function and yield an empty dict (`{}`). dlt creates an empty table with all declared columns. Only the metadata columns `_dlt_id` and `_dlt_load_id` will have values. | ||
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| > Note: The load will fail if the schema marks any columns as `NOT NULL` i.e. `"nullable": False`. Ensure all non-metadata columns are nullable when loading an empty table. |
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use admonitions:
:::note
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| Example: | ||
| ```py | ||
| @dlt.resource( | ||
| table_name="raw_events_apply_hints_yield_dict", |
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Suggested change
| table_name="raw_events_apply_hints_yield_dict", | |
| table_name="your_table_name", |
| To create an empty table, declare the schema explicitly. Do this either: | ||
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| - in the resource function with `@dlt.resource`, or | ||
| - by applying hints with `apply_hints`. |
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- link "Adjust schema" here
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AstrakhantsevaAA
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Sep 4, 2025
…s-on-empty-table-materializtion
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Description
Updated resource docs on info for materializing empty tables
Related Issues
apply_hintsand@dlt.resource(columns=…)) do not materialize schema #2901apply_hintsand@dlt.resource(columns=…)) do not materialize schema #2901