diff options
Diffstat (limited to 'sql/sql_select.cc')
| -rw-r--r-- | sql/sql_select.cc | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc index b9fe8f3162a..7a6a028ee9c 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -2462,6 +2462,17 @@ void JOIN::save_explain_data(Explain_query *output, bool can_overwrite, bool need_tmp_table, bool need_order, bool distinct) { + /* + If there is SELECT in this statemet with the same number it must be the + same SELECT + */ + DBUG_ASSERT(select_lex->select_number == UINT_MAX || + select_lex->select_number == INT_MAX || + !output || + !output->get_select(select_lex->select_number) || + output->get_select(select_lex->select_number)->select_lex == + select_lex); + if (select_lex->select_number != UINT_MAX && select_lex->select_number != INT_MAX /* this is not a UNION's "fake select */ && have_query_plan != JOIN::QEP_NOT_PRESENT_YET && @@ -24601,6 +24612,11 @@ int JOIN::save_explain_data_intern(Explain_query *output, bool need_tmp_table, { explain= new (output->mem_root) Explain_select(output->mem_root, thd->lex->analyze_stmt); + if (!explain) + DBUG_RETURN(1); // EoM +#ifndef DBUG_OFF + explain->select_lex= select_lex; +#endif join->select_lex->set_explain_type(true); explain->select_id= join->select_lex->select_number; |