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[FEAT MERGE] skip scan feature and performance optimization

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This commit is contained in:
obdev
2023-01-04 09:08:22 +00:00
committed by ob-robot
parent ad415b4359
commit 07b1224a51
119 changed files with 6176 additions and 2010 deletions
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11
src/sql/optimizer/ob_access_path_estimation.h
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@ -15,6 +15,7 @@
#include "sql/optimizer/ob_opt_est_cost.h"
#include "sql/optimizer/ob_optimizer_context.h"
#include "sql/optimizer/ob_join_order.h"
namespace oceanbase {
namespace sql {
class AccessPath;
@ -69,6 +70,16 @@ private:
ObTableMetaInfo &meta,
ObIArray<AccessPath *>& paths);
static int calc_skip_scan_prefix_ndv(AccessPath &ap, double &prefix_ndv);
static int get_skip_scan_prefix_exprs(ObIArray<ColumnItem> &column_items,
int64_t skip_scan_offset,
ObIArray<ObRawExpr*> &prefix_exprs);
static int update_use_skip_scan(ObCostTableScanInfo &est_cost_info,
ObIArray<ObExprSelPair> &all_predicate_sel,
OptSkipScanState &use_skip_scan);
static int do_storage_estimation(ObOptimizerContext &ctx,
ObBatchEstTasks &tasks);