Module 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.

TableFuncImpl

The implementation of a table function is either

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.