From 877bd85d6a548edcc1ae7600ba0a3cc117e484ff Mon Sep 17 00:00:00 2001
From: drrtuy <drrtuy@gmail.com>
Date: Wed, 6 Aug 2025 12:20:57 +0000
Subject: [PATCH] chore(QA): removed commented code.

---
 dbcon/mysql/ha_mcs_execplan.cpp | 48 ++-------------------------------
 1 file changed, 2 insertions(+), 46 deletions(-)

diff --git a/dbcon/mysql/ha_mcs_execplan.cpp b/dbcon/mysql/ha_mcs_execplan.cpp
index f5fa7db42..57a0abc62 100644
--- a/dbcon/mysql/ha_mcs_execplan.cpp
+++ b/dbcon/mysql/ha_mcs_execplan.cpp
@@ -5204,10 +5204,8 @@ void setExecutionParams(gp_walk_info& gwi, SCSEP& csep)
     csep->umMemLimit(get_um_mem_limit(gwi.thd) * 1024ULL * 1024);
 }
 
-// Loop over available indexes to find and extract corresponding EI column statistics
-// for the first column of the index if any.
-// Statistics is stored in GWI context.
-// Mock for ES 10.6
+// Loop over indexes available for a table to find and extract corresponding Engine Independent column
+// statistics for the first column of the index if any. Statistics are stored in a GWI context. Mock for ES 10.6
 // TODO clean up extra logging when the feature is ready
 #if MYSQL_VERSION_ID >= 110401
 void extractColumnStatistics(TABLE_LIST* table_ptr, gp_walk_info& gwi)
@@ -6440,48 +6438,6 @@ int processLimitAndOffset(SELECT_LEX& select_lex, gp_walk_info& gwi, SCSEP& csep
   return 0;
 }
 
-// Loop over available indexes to find and extract corresponding EI column statistics
-// for the first column of the index if any.
-// Statistics is stored in GWI context.
-// Mock for ES 10.6
-// #if MYSQL_VERSION_ID >= 120401
-// void extractColumnStatistics(Item_field* ifp, gp_walk_info& gwi)
-// {
-//   for (uint j = 0; j < ifp->field->table->s->keys; j++)
-//   {
-//     for (uint i = 0; i < ifp->field->table->s->key_info[j].usable_key_parts; i++)
-//     {
-//       if (ifp->field->table->s->key_info[j].key_part[i].fieldnr == ifp->field->field_index + 1)
-//       {
-//         if (i == 0 && ifp->field->read_stats)
-//         {
-//           assert(ifp->field->table->s);
-//           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};
-//             auto tableStatisticsMapIt = gwi.tableStatisticsMap.find(tableName);
-//             if (tableStatisticsMapIt == gwi.tableStatisticsMap.end())
-//             {
-//               gwi.tableStatisticsMap.insert({tableName, {{ifp->field->field_name.str, *histogram}}});
-//             }
-//             else
-//             {
-//               tableStatisticsMapIt->second.insert({ifp->field->field_name.str, *histogram});
-//             }
-//           }
-//         }
-//       }
-//     }
-//   }
-// }
-// #else
-// void extractColumnStatistics(Item_field* /*ifp*/, gp_walk_info& /*gwi*/)
-// {
-// }
-// #endif
-
 /*@brief  Process SELECT part of a query or sub-query      */
 /***********************************************************
  * DESCRIPTION: