Module mz_sql::func

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

Macros

• builtins 🔒
  Constructs builtin function map.
• catalog_name_only 🔒
  Functions using this macro should be transformed/planned away before reaching function selection code, but still need to be present in the catalog during planning.
• impl_def 🔒
• params 🔒
  Provides shorthand for converting Vec<ScalarType> into Vec<ParamType>.
• privilege_fn 🔒
  Generates an (OID, OID, TEXT) SQL implementation for has_X_privilege style functions.

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.
• PolymorphicSolution 🔒
  Represents a solution to a set of polymorphic constraints, expressed as the params of a function and the user-supplied args.
• ReturnType
• TableFuncPlan

Enums

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

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

• array_to_string 🔒
• coerce_args_to_types 🔒
• current_settings 🔒
• digest 🔒
• experimental_sql_impl_table_func 🔒
• find_match 🔒
  Finds an exact match based on the arguments, or, if no exact match, finds the best match available. Patterned after PostgreSQL’s type conversion matching algorithm.
• 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.
• sql_impl_func 🔒
• sql_impl_table_func 🔒
• sql_impl_table_func_inner 🔒