diff options
Diffstat (limited to 'sql/sql_select.cc')
| -rw-r--r-- | sql/sql_select.cc | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 6d5dc963320..37547024318 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -19638,12 +19638,30 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order, if (table->reginfo.not_exists_optimize) extra.append(STRING_WITH_LEN("; Not exists")); + /* if (quick_type == QUICK_SELECT_I::QS_TYPE_RANGE && !(((QUICK_RANGE_SELECT*)(tab->select->quick))->mrr_flags & HA_MRR_USE_DEFAULT_IMPL)) { extra.append(STRING_WITH_LEN("; Using MRR")); } + */ + if (quick_type == QUICK_SELECT_I::QS_TYPE_RANGE) + { + char mrr_str_buf[128]; + mrr_str_buf[0]=0; + int len; + uint mrr_flags= + ((QUICK_RANGE_SELECT*)(tab->select->quick))->mrr_flags; + len= table->file->multi_range_read_explain_info(mrr_flags, + mrr_str_buf, + sizeof(mrr_str_buf)); + if (len > 0) + { + extra.append(STRING_WITH_LEN("; ")); + extra.append(mrr_str_buf, len); + } + } if (need_tmp_table) { |