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#pragma once
#include <Interpreters/Context_fwd.h>
#include <cstddef>
namespace DB
{
struct Settings;
struct QueryPlanOptimizationSettings
{
/// If not zero, throw if too many optimizations were applied to query plan.
/// It helps to avoid infinite optimization loop.
size_t max_optimizations_to_apply = 0;
/// If disabled, no optimization applied.
bool optimize_plan = true;
/// If filter push down optimization is enabled.
bool filter_push_down = true;
/// if distinct in order optimization is enabled
bool distinct_in_order = false;
/// If read-in-order optimisation is enabled
bool read_in_order = true;
/// If aggregation-in-order optimisation is enabled
bool aggregation_in_order = false;
/// If removing redundant sorting is enabled, for example, ORDER BY clauses in subqueries
bool remove_redundant_sorting = true;
bool aggregate_partitions_independently = false;
/// If removing redundant distinct steps is enabled
bool remove_redundant_distinct = true;
/// If reading from projection can be applied
bool optimize_projection = false;
bool force_use_projection = false;
bool optimize_use_implicit_projections = false;
static QueryPlanOptimizationSettings fromSettings(const Settings & from);
static QueryPlanOptimizationSettings fromContext(ContextPtr from);
};
}
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