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feat(rbo,rules): use EI statistics for filter ranges

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drrtuy
2025-07-18 13:41:30 +00:00
parent 428be12b9b
commit e600f11aa9
3 changed files with 14 additions and 134 deletions
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6
dbcon/mysql/ha_mcs_impl_if.h
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@@ -120,6 +120,12 @@ using ColumnName = std::string;
using ColumnStatisticsMap = std::unordered_map<ColumnName, Histogram_json_hb>;
using TableStatisticsMap = std::unordered_map<SchemaAndTableName, ColumnStatisticsMap, SchemaAndTableNameHash>;
// This structure is used to store MDB AST -> CSEP translation context.
// There is a column statistics for some columns in a query.
// As per 23.10.5 "some" means first column of the index in projection list of CSEP
// satisfies the condition of applyParallelCSEP RBO rule.
// Note that statistics must be merged from subquery/derived table
// to the statistics of the outer query.
struct gp_walk_info
{
execplan::CalpontSelectExecutionPlan::ReturnedColumnList returnedCols;