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a4652c3b · Oleksandr Byelkin · f7740b66 · a4652c3b
Commit a4652c3b authored Jan 29, 2017 by Oleksandr Byelkin
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sql/sql_select.cc sql/sql_select.cc +4 -0

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--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -18008,6 +18008,10 @@ bool instantiate_tmp_table(TABLE *table, KEY *keyinfo,
 {
  if (table->s->db_type() == TMP_ENGINE_HTON)
  {
+    /*
+      If it is not heap (in-memory) table then convert index to unique
+      constrain.
+    */
    if (create_internal_tmp_table(table, keyinfo, start_recinfo, recinfo,
                                  options))
      return TRUE;