Calcite - Physical Plan

About

Sql Engine - (Physical|Execution) Plan in calcite.

The physical plan is the relation algebra expression that describe how to perform the operation on the data. It's the output of the optimizer

Example

Example of output of a physical_plan (There is no node that starts with the term logical, otherwise, it's a logical_plan)

1628:EnumerableProject(name=[$2])
  1627:EnumerableHashJoin(condition=[=($1, $5)], joinType=[inner])
    1626:EnumerableFilter(condition=[=($0, 100)])
      94:EnumerableTableScan(table=[[HR, emps]])
    92:EnumerableTableScan(table=[[HR, depts]])

Management

Print

As the physical plan is a relational expression, see relation expression print

Explain

Explain is just another term for printing.


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