Query Plan Operator Control Parameters

Query Plan Operator Control Parameters

The following parameters control the types of plan operations the legacy query optimizer can use. Enable or disable plan operations to force the legacy query optimizer to choose a different plan. This is useful for testing and comparing query performance using different plan types.

enable_bitmapscan

enable_groupagg

enable_hashagg

enable_hashjoin

enable_indexscan

enable_mergejoin

enable_nestloop

enable_seqscan

enable_sort

enable_tidscan

gp_enable_adaptive_nestloop

gp_enable_agg_distinct

gp_enable_agg_distinct_pruning

gp_enable_direct_dispatch

gp_enable_fallback_plan

gp_enable_fast_sri

gp_enable_groupext_distinct_ gather

gp_enable_groupext_distinct_ pruning

gp_enable_multiphase_agg

gp_enable_predicate_ propagation

gp_enable_preunique

gp_enable_relsize_collection

gp_enable_sequential_window_ plans

gp_enable_sort_distinct

gp_enable_sort_limit

gp_inline_simple_cte