MindsDB exposes collected metadata from connected data sources via virtual tables in the INFORMATION_SCHEMA schema. These views allow users to inspect and query the Data Catalog using familiar SQL syntax.

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Available Data Catalog Tables

To filter results for a specific data integration, use WHERE TABLE_SCHEMA = '<integration_name>'.

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INFORMATION_SCHEMA.META_TABLES

Provides high-level metadata about available tables in a given integration. Here are the available columns:
  • TABLE_NAME (string): Name of the table.
  • TABLE_TYPE (string, optional): Type of table (e.g., BASE TABLE, VIEW).
  • TABLE_SCHEMA (string, optional): Schema name or integration name.
  • TABLE_DESCRIPTION (string, optional): Description of the table.
  • ROW_COUNT (integer, optional): Estimated row count.
Here is how to query it foe a specific data integration: 
SELECT * FROM INFORMATION_SCHEMA.META_TABLES 
WHERE TABLE_SCHEMA = 'integration_name';

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INFORMATION_SCHEMA.META_COLUMNS

Returns detailed column-level metadata for all tables in the specified integration. Here are the available columns:
  • TABLE_NAME (string): Name of the table.
  • COLUMN_NAME (string): Column name.
  • DATA_TYPE (string): Data type of the column.
  • COLUMN_DESCRIPTION (string, optional): Description of the column.
  • IS_NULLABLE (boolean, optional): Whether nulls are allowed.
  • COLUMN_DEFAULT (string, optional): Default value, if any.
Here is how to query it foe a specific data integration: 
SELECT * FROM INFORMATION_SCHEMA.META_COLUMNS 
WHERE TABLE_SCHEMA = 'integration_name';

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INFORMATION_SCHEMA.META_COLUMN_STATISTICS

Provides statistical insights about each column’s values and distribution. Here are the available columns:
  • TABLE_NAME (string): Name of the table.
  • COLUMN_NAME (string): Column name.
  • MOST_COMMON_VALUES (array of strings, optional)
  • MOST_COMMON_FREQUENCIES (array of integers, optional)
  • NULL_PERCENTAGE (float, optional)
  • MINIMUM_VALUE (string, optional)
  • MAXIMUM_VALUE (string, optional)
  • DISTINCT_VALUES_COUNT (integer, optional)
Here is how to query it foe a specific data integration: 
SELECT * FROM INFORMATION_SCHEMA.META_COLUMN_STATISTICS 
WHERE TABLE_SCHEMA = 'integration_name';

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INFORMATION_SCHEMA.META_KEY_COLUMN_USAGE

Describes the primary key columns for tables in the integration. Here are the available columns:
  • TABLE_NAME (string): Name of the table.
  • COLUMN_NAME (string): Column name.
  • ORDINAL_POSITION (integer, optional)
  • CONSTRAINT_NAME (string, optional)
Here is how to query it foe a specific data integration: 
SELECT * FROM INFORMATION_SCHEMA.META_KEY_COLUMN_USAGE 
WHERE TABLE_SCHEMA = 'integration_name';

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INFORMATION_SCHEMA.META_TABLE_CONSTRAINTS

Lists table-level constraints, including primary and foreign keys. Here are the available columns:
  • TABLE_NAME (string): Name of the table.
  • CONSTRAINT_NAME (string, optional)
  • CONSTRAINT_TYPE (string): e.g., PRIMARY KEY, FOREIGN KEY
Here is how to query it foe a specific data integration: 
SELECT * FROM INFORMATION_SCHEMA.META_TABLE_CONSTRAINTS 
WHERE TABLE_SCHEMA = 'integration_name';

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INFORMATION_SCHEMA.META_HANDLER_INFO

Returns a textual summary of the integration implementation, including supported SQL features and capabilities. Here are the available columns:
  • HANDLER_INFO (string): Description.
Here is how to query it foe a specific data integration: 
SELECT * FROM INFORMATION_SCHEMA.META_HANDLER_INFO 
WHERE TABLE_SCHEMA = 'integration_name';