Module mz_sql::func

TBD: Currently, sql::func handles matching arguments to their respective built-in functions (for most built-in functions, at least).

Structs

• Candidate
  Tracks candidate implementations.
• FuncImpl
  Describes a single function’s implementation.
• FuncImplCatalogDetails
  Describes how each implementation should be represented in the catalog.
• Operation
  Builds an expression that evaluates a scalar function on the provided input expressions.
• ReturnType
• TableFuncPlan

Enums

• Func
• FuncSpec
  A specifier for a function or an operator.
• ParamList
  Describes possible types of function parameters.
• ParamType
  Describes parameter types.

Statics

• INFORMATION_SCHEMA_BUILTINS
• MZ_CATALOG_BUILTINS
• MZ_INTERNAL_BUILTINS
• MZ_UNSAFE_BUILTINS
• OP_IMPLS
  Correlates an operator with all of its implementations.
• PG_CATALOG_BUILTINS
  Correlates a built-in function name to its implementations.

Functions

• resolve_op
  Resolves the operator to a set of function implementations.
• select_impl
  Selects the best implementation given the provided args using a process similar to PostgreSQL’s parser, and returns the ScalarExpr to invoke that function.
• sql_impl
  Backing implementation for sql_impl_func and sql_impl_cast. See those functions for details.