Module planner

SqlToRel: SQL Query Planner (produces LogicalPlan from SQL AST)

Structs

• IdentNormalizer
  Ident Normalizer
• ParserOptions
  SQL parser options
• PlannerContext
  Struct to store the states used by the Planner. The Planner will leverage the states to resolve CTEs, Views, subqueries and PREPARE statements. The states include Common Table Expression (CTE) provided with WITH clause and Parameter Data Types provided with PREPARE statement and the query schema of the outer query plan.
• SqlToRel
  SQL query planner
• ValueNormalizer
  Value Normalizer

Traits

• ContextProvider
  Provides the SQL query planner meta-data about tables and functions referenced in SQL statements, without a direct dependency on other DataFusion structures

Functions

• object_name_to_qualifier
  Construct a WHERE qualifier suitable for e.g. information_schema filtering from the provided object identifiers (catalog, schema and table names).
• object_name_to_table_reference
  Create a TableReference after normalizing the specified ObjectName