Module datafusion::catalog_common

Interfaces and default implementations of catalogs and schemas.

Implementations

• Simple memory based catalog: MemoryCatalogProviderList, MemoryCatalogProvider, MemorySchemaProvider
• Information schema: information_schema
• Listing schema: listing_schema

Re-exports

• pub use memory::MemoryCatalogProvider;
• pub use memory::MemoryCatalogProviderList;
• pub use memory::MemorySchemaProvider;

Modules

• information_schema
  InformationSchemaProvider that implements the SQL Information Schema for DataFusion.
• listing_schema
  ListingSchemaProvider: SchemaProvider that scans ObjectStores for tables automatically
• memory
  MemoryCatalogProvider, MemoryCatalogProviderList: In-memory implementations of CatalogProviderList and CatalogProvider.

Structs

• ResolvedTableReference
  A fully resolved path to a table of the form “catalog.schema.table”

Enums

• TableReference
  A multi part identifier (path) to a table that may require further resolution (e.g. foo.bar).

Traits

• CatalogListDeprecated
  See CatalogProviderList
• CatalogProvider
  Represents a catalog, comprising a number of named schemas.
• CatalogProviderList
  Represent a list of named CatalogProviders.
• SchemaProvider
  Represents a schema, comprising a number of named tables.

Functions

• resolve_table_references
  Collects all tables and views referenced in the SQL statement. CTEs are collected separately. This can be used to determine which tables need to be in the catalog for a query to be planned.