> ## Documentation Index > Fetch the complete documentation index at: https://docs.adriel.com/llms.txt > Use this file to discover all available pages before exploring further. # FAQs > Common questions, expected behaviors, and troubleshooting for the Notion data source. ## Why does my Notion database not appear in the picker? The database picker lists only databases the Notion integration has been added to. Notion databases are private to the integration until they are explicitly shared with it, so a database that exists in the workspace but has not been shared will not show up. To make a database selectable, open it in Notion, use the connection or access menu, and invite the Adriel integration to that database or its parent page. Databases without a title are also skipped, so the database needs a title before it appears. After granting access, reopen the picker to refresh the list. See [How to connect Notion](/data-sources/g-n/notion/how-to-connect) for the full connection walkthrough. ## Why is my Notion relation or rollup column empty? Relation properties are not imported. Their values are skipped during parsing, so a relation column comes through with no usable data. To surface a value from a related record, add a **rollup** on that relation in Notion and import the rollup instead. Rollups themselves import in most cases, with one exception: a rollup whose result is a date resolves to an empty value. Numeric rollups come through as metrics and text rollups as breakdowns, but a date-typed rollup reads as blank. For a date needed as a breakdown, map a native `date`, `created_time`, or `last_edited_time` property instead. The full property mapping is in the [Notion data reference](/data-sources/g-n/notion/data-reference). ## Why is my dashboard slow to load on a large Notion database? Notion data is queried live from the database rather than served from a stored copy, and the query walks through every page of the database on each load. Large databases therefore take longer to render, because more pages have to be paginated through before the widget can draw. One detail makes this more pronounced: only the date-range filter is applied on the Notion side. All other widget filters are applied after the rows are returned, so a non-date filter does not reduce how many pages the database has to page through. To keep large databases responsive, narrow the widget date range against a mapped date property, or split a very large database into smaller purpose-built databases in Notion. For how freshness works, see the [Notion data reference](/data-sources/g-n/notion/data-reference). ## Why does my checkbox or multi-select column behave like text? Both are imported as text breakdowns rather than as structured values. A checkbox comes through as the text `"true"` or `"false"`, and a multi-select is flattened into a single string with its selected tags joined together. This is expected: Notion's richer property shapes are normalized into flat cells so they can be charted. The practical effect is on filtering. Because a multi-select cell holds all its tags as one joined string, filtering by a single tag works best with a string-contains match rather than an exact match. A checkbox is filtered against the literal values `"true"` and `"false"`. ## Can I combine two Notion databases, or Notion with another data source, on one dashboard? Each Adriel data source binds to exactly one Notion database. To report on a second database, create a second Notion data source on the same connection and add both to the dashboard as separate data sources. Notion data combines natively with other data sources only when they share the same breakdowns. When the breakdowns differ, configure Blend Data settings to join the sources instead. The same applies to pairing Notion with other structured-data platforms such as [Airtable](/data-sources/a-f/airtable/data-reference) or [Google Sheets](/data-sources/g-n/google-sheets/data-reference). ## Related Field type mapping, import model, and limits for the Notion data source. Set up the Notion integration and select a database. Alternative structured-data platform with a similar field model. Alternative spreadsheet-backed data source.