database/mariadb-columnstore-engine
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feat(rbo,rules,QA): changed to way statistics is collected

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This commit is contained in:
drrtuy
2025-07-30 22:36:03 +00:00
parent da09a1b5d0
commit 112ba9f162
2 changed files with 44 additions and 5 deletions
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36
dbcon/mysql/ha_mcs_execplan.cpp
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@@ -5207,9 +5207,38 @@ int processFrom(bool& isUnion, SELECT_LEX& select_lex, gp_walk_info& gwi, SCSEP&
// trigger system catalog cache
if (columnStore)
{
gwi.csc->columnRIDs(
make_table(table_ptr->db.str, table_ptr->table_name.str, lower_case_table_names), true);
}
else
{
for (uint j = 0; j < table_ptr->table->s->keys; j++)
{
// for (uint i = 0; i < table_ptr->table->s->key_info[j].usable_key_parts; i++)
{
Field* field = table_ptr->table->key_info[j].key_part[0].field;
std::cout << "j index " << j << " i column " << 0 << " fieldnr "
<< table_ptr->table->key_info[j].key_part[0].fieldnr << " " << field->field_name.str;
if (field->read_stats)
{
auto* histogram = dynamic_cast<Histogram_json_hb*>(field->read_stats->histogram);
if (histogram)
{
std::cout << " has stats ";
SchemaAndTableName tableName = {field->table->s->db.str,
field->table->s->table_name.str};
gwi.tableStatisticsMap[tableName][field->field_name.str] = *histogram;
}
else
{
std::cout << " no stats ";
}
}
std::cout << std::endl;
}
}
}
string table_name = table_ptr->table_name.str;
// @bug5523
@@ -6307,7 +6336,8 @@ void extractColumnStatistics(Item_field* ifp, gp_walk_info& gwi)
auto* histogram = dynamic_cast<Histogram_json_hb*>(ifp->field->read_stats->histogram);
if (histogram)
{
SchemaAndTableName tableName = {ifp->field->table->s->db.str, ifp->field->table->s->table_name.str};
SchemaAndTableName tableName = {ifp->field->table->s->db.str,
ifp->field->table->s->table_name.str};
auto tableStatisticsMapIt = gwi.tableStatisticsMap.find(tableName);
if (tableStatisticsMapIt == gwi.tableStatisticsMap.end())
{
@@ -6418,7 +6448,7 @@ int processSelect(SELECT_LEX& select_lex, gp_walk_info& gwi, SCSEP& csep, vector
case Item::FIELD_ITEM:
{
Item_field* ifp = (Item_field*)item;
extractColumnStatistics(ifp, gwi);
// extractColumnStatistics(ifp, gwi);
// Handle * case
if (ifp->field_name.length && string(ifp->field_name.str) == "*")
{