Module datafusion::physical_plan::projection
source · [−]Expand description
Defines the projection execution plan. A projection determines which columns or expressions
are returned from a query. The SQL statement SELECT a, b, a+b FROM t1 is an example
of a projection on table t1 where the expressions a, b, and a+b are the
projection expressions. SELECT without FROM will only evaluate expressions.
Structs
Execution plan for a projection