add a comment about partitioning unsupported

21f27346 · Nikita Malyavin · a0a34398 · 21f27346
Commit 21f27346 authored Dec 03, 2019 by Nikita Malyavin
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sql/sql_table.cc sql/sql_table.cc +2 -0

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--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -4589,6 +4589,8 @@ static bool append_system_key_parts(THD *thd, HA_CREATE_INFO *create_info,
      }
      if (thd->work_part_info)
      {
+        // Unfortunately partitions do not support searching upper/lower bounds
+        // (i.e. ha_index_read_map with KEY_OR_PREV, KEY_OR_NEXT)
        my_error(ER_PERIOD_WITHOUT_OVERLAPS_PARTITIONED, MYF(0));
        return true;
      }