Metabase provides the capability to parse and unfold JSON columns in PostgreSQL databases, enhancing the data analysis experience. Remember, this action will affect how Metabase interacts with JSON data, potentially impacting how you query and visualize data within Metabase. Individual column unfolding can be toggled in table metadata settings.Disabling may improve performance if you experience slowness.JSON unfolding is enabled by default for PostgreSQL databases, allowing each JSON key to become a separate column.Monitor sync status via Admin > Troubleshooting > Logs.Disabling unfolding can significantly reduce sync times, especially with numerous JSON records.Metabase parses JSON and JSONB records during synchronization, which can be time-consuming.To ensure the changes take effect, click Sync database schema.Save your changes by clicking Save changes.Locate and click on Disable 'JSON unfolding'.Navigate to Admin > Databases > select your database > Show advanced options.To optimize Metabase performance, particularly when dealing with large volumes of JSON data, disabling JSON unfolding can be beneficial. Trigger a schema sync if changes are made to the JSON structure.īy understanding and utilizing Metabase's JSON schema inference, users can optimize their database's compatibility with Metabase, enhancing data analysis capabilities.Ensure the first 500 records contain all potential JSON keys.Navigate to Admin > Databases > your database.For performance reasons, Metabase limits the inference to a subset of records.MariaDB does not support this inference method due to differences with MySQL.Adding keys to initial records can improve schema detection.Inconsistent keys across records can lead to incomplete schema inference.MySQL JSON fields lack a predefined schema.Metabase infers JSON schema from the first 500 table rows.To ensure a comprehensive schema inference, additional keys must be included in the early records. However, this method has limitations, especially when JSON keys vary across records, potentially missing keys not present in the initial rows. This process involves parsing the first five hundred rows of a table to determine the keys present in the JSON fields. If you’d like more technical resources to set up your data stack with Metabase, connect with a Metabase Expert.Metabase employs a unique approach to infer the JSON schema within databases like MySQL, where JSON fields do not have a predefined schema. Developers guideĬontribute to the Metabase open source project! Data and Business Intelligence Glossary Source code repository on GitHubĪ list of all Metabase releases, including both the Enterprise Edition and the Open Source Edition. Metabase Cloudįor docs specific to Metabase Cloud plans. Learn Metabase has a ton of articles on how to use Metabase, data best practices, and more. Some Metabase plans offer additional features.
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