Eval evaluates expr against a map.

IsAggregate check if an expression is aggregate with the binding alias info.

MultiValuer returns a Valuer that iterates over multiple Valuer instances to find a match.

Should only be called by stream to make sure a single instance for an operation.

Should only be called by stream to make sure a single instance for an operation.

OrderedBy returns a Sorter that sorts using the less functions, in order.

Validate select statement without context.

ImplicitStateFuncs is a set of functions that read/update global state implicitly.

AffiliateRow part of other row types do help calculation of newly added cols.

Alias will not need to convert cases.

FunctionValuer ONLY use NewFunctionValuer function to initialize.

GroupedTuples is a collection of tuples grouped by a key.

JoinTuple is a row produced by a join operation.

MultiSorter implements the Sort interface, sorting the changes within.

Tuple The input row, produced by the source.

ValuerEval will evaluate an expression using the Valuer.

AggregateData Could be a tuple or collection.

AliasValuer is used to calculate and cache the alias value.

CallValuer implements the Call method for evaluating function calls.

Collection A collection of rows as a table.

CollectionRow is the aggregation row of a non-grouped collection.

EmittedData is data that is produced by a specific source.

FuncValuer can calculate function type value like window_start and window_end.

MultiFunc hack for builtin functions that works for multiple functions.

RawRow is the basic data type for logical row.

Valuer is the interface that wraps the Value() method.

Message is a valuer that substitutes values for the mapped interface.