CreateMacroStmt <- MacroOrFunction IfNotExists? QualifiedName List(MacroDefinition)

MacroOrFunction <- 'MACRO' / 'FUNCTION'

MacroDefinition <- Parens(MacroParameters?) 'AS' (TableMacroDefinition / ScalarMacroDefinition)

MacroParameters <- List(MacroParameter)
MacroParameter <- NamedParameter / (TypeFuncName Type?)

ScalarMacroDefinition <- Expression
TableMacroDefinition <- 'TABLE' SelectStatement