Type Definition mz_sql::query_model::mir::ColumnMap
source · type ColumnMap = HashMap<ColumnReference, usize>;
Expand description
Maps a column reference to a specific column position.
This is used for resolving column references when lowering expressions
on top of a MirRelationExpr
, where it maps each column reference with
with a column position within the projection of that MirRelationExpr
.