In the above example, begin by looking at the leaves of the tree. In this case the leaves of the tree are implemented using a full table scans of the PRODUCTS and the SALES tables. The rows produced by these table scans will be consumed by the join operator. Here the join operator is...
For example, the statistics for a join operation also includes the statistics for its two inputs. The statistics in V$SQL_PLAN_STATISTICS are available for cursors that have been compiled with the STATISTICS_LEVEL initialization parameter set to ALL. The V$SQL_PLAN_STATISTICS_ALL view enables ...
In this blog we described what the explain plan function does and introduced its result, the execution plan. We distinguished two types of execution plans, the estimated execution plan and the actual execution plan and pointed out what you can see in ST04 and ST05 for the different database ...
If you perform a join, the estimated max memory allocation is also reported for the join. For example: EXPLAINANALYZESELECT*FROMvehiclesJOINridesONrides.vehicle_id=vehicles.idandrides.city=vehicles.citylimit100; info --- planning time: 1ms execution time: 18ms distribution: full vectorized: true...
In the above example, begin by looking at the leaves of the tree. In this case the leaves of the tree are implemented using a full table scans of the PRODUCTS and the SALES tables. The rows produced by these table scans will be consumed by the join operator. Here the join operator is...
In the above example, begin by looking at the leaves of the tree. In this case the leaves of the tree are implemented using a full table scans of the PRODUCTS and the SALES tables. The rows produced by these table scans will be consumed by the join operator. Here the join operator...