---
schema_version: "1"
id: 8c995df53ed98d0e73eb90ca3e90638c2b84b5f117ba33523d510ca9bdf09d6a
title: Limitations
collection: tableau
version: next
locale: en-us
portal_url: https://docs.salesforce.com/tableau/next/en-us/api/vizql-data-service/docs/vds_limitations.md
canonical_url: https://help.tableau.com/v0.0/api/vizql-data-service/en-us/docs/vds_limitations.html
source_site: help.tableau.com
content_type: documentation
content_hash: c4a7a3dd2dae6356780c12565c6018767eb6ae2e51296be12e9351eec571e05b
description: Documentation for the VizQL Data Service
---
# Limitations

  

🕐 _1 min read_

## Calculations

VizQL Data Service (VDS) doesn’t support these calculation types:

- Spatial calculations
- Python or R calculations (like SCRIPT\_REAL)
- Tableau Analytics Extensions calculations
- Pass-through calculations (like RAWSQL)
- Fiscal date calculations
- COUNT(table)
- Calculations on features we don’t support:
    - Sets
    - Combined fields

Also, you can’t reference a group in a calculation.

## Data sources

VDS doesn’t support [cube data sources](https://help.tableau.com/current/pro/desktop/en-us/cubes.htm#what-are-cube-data-sources).

## Fields

VDS doesn’t support querying for sets and combined fields. These field types aren’t returned as part of the [Request data source metadata](https://help.tableau.com/v0.0/api/vizql-data-service/en-us/reference/index.html#operation/ReadMetadata) method.

## Filters

- VDS doesn’t support bins or groups in filters.
- Set filters, match filters, and relative date filters can’t have functions or calculations.
- The `field` property of a `filter` can contain a `fieldName`, or a `fieldName` and a `function`, for example Sales, or SUM of Sales. Within a query, you can only have one `filter` per `field`. So if you have a `filter` on SUM of Sales, you can’t add another `filter` in the same query for SUM of Sales. However, you can add a `filter` for Sales because it’s a different `field`.

## Licensing and data transfer

VDS is available for all license models. There’s a cap on usage determined by the number of [Tableau Creator licenses](https://www.tableau.com/pricing/tableau-license-types) assigned to a site. Each Creator license on a site raises the cap for the entire site by 100 queries per hour.

## Queries

VDS doesn’t support all features of Tableau services. For a full list of supported features, see [Create a Query](https://help.tableau.com/v0.0/api/vizql-data-service/en-us/docs/vds_create_queries.html).

## Response size

In versions of Tableau before Tableau 2026.1, VDS has a response size limit of 1-GB. Any response size larger than that results in an error. To avoid such an error, we recommend that you apply a filter to the data to limit the response size.

Starting in Tableau 2026.1, there’s no longer a 1-GB limit on the response size of a query. In addition, the [Query data source](https://help.tableau.com/v0.0/api/vizql-data-service/en-us/reference/index.html#operation/QueryDatasource) method has a 30-minute timeout. For more information, see [Results handling and error checking](https://help.tableau.com/v0.0/api/vizql-data-service/en-us/docs/vds_create_queries.html#results-handling-and-error-checking).

## Other

VDS doesn’t support date-time aggregations (for example, `HOUR`, `MINUTE`, and so on).