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Merge branch '10.3' into 10.4

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This commit is contained in:
Oleksandr Byelkin
2021-07-31 22:59:58 +02:00
parent 77992bc710 1423cf5e3d
commit 7841a7eb09
339 changed files with 7425 additions and 2358 deletions
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24
sql/sql_cte.cc
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@ -937,7 +937,8 @@ bool With_clause::prepare_unreferenced_elements(THD *thd)
with_elem;
with_elem= with_elem->next)
{
if (!with_elem->is_referenced() && with_elem->prepare_unreferenced(thd))
if ((with_elem->is_hanging_recursive() || !with_elem->is_referenced()) &&
with_elem->prepare_unreferenced(thd))
return true;
}
@ -1125,14 +1126,6 @@ st_select_lex_unit *With_element::clone_parsed_spec(LEX *old_lex,
lex->unit.include_down(with_table->select_lex);
lex->unit.set_slave(with_select);
lex->unit.cloned_from= spec;
last_clone_select= lex->all_selects_list;
while (last_clone_select->next_select_in_list())
last_clone_select= last_clone_select->next_select_in_list();
old_lex->all_selects_list=
(st_select_lex*) (lex->all_selects_list->
insert_chain_before(
(st_select_lex_node **) &(old_lex->all_selects_list),
last_clone_select));
/*
Now all references to the CTE defined outside of the cloned specification
@ -1148,6 +1141,15 @@ st_select_lex_unit *With_element::clone_parsed_spec(LEX *old_lex,
goto err;
}
last_clone_select= lex->all_selects_list;
while (last_clone_select->next_select_in_list())
last_clone_select= last_clone_select->next_select_in_list();
old_lex->all_selects_list=
(st_select_lex*) (lex->all_selects_list->
insert_chain_before(
(st_select_lex_node **) &(old_lex->all_selects_list),
last_clone_select));
lex->sphead= NULL; // in order not to delete lex->sphead
lex_end(lex);
err:
@ -1285,6 +1287,7 @@ bool With_element::is_anchor(st_select_lex *sel)
With_element *st_select_lex::find_table_def_in_with_clauses(TABLE_LIST *table)
{
With_element *found= NULL;
With_clause *containing_with_clause= NULL;
st_select_lex_unit *master_unit;
st_select_lex *outer_sl;
for (st_select_lex *sl= this; sl; sl= outer_sl)
@ -1297,6 +1300,7 @@ With_element *st_select_lex::find_table_def_in_with_clauses(TABLE_LIST *table)
*/
With_clause *attached_with_clause= sl->get_with_clause();
if (attached_with_clause &&
attached_with_clause != containing_with_clause &&
(found= attached_with_clause->find_table_def(table, NULL)))
break;
master_unit= sl->master_unit();
@ -1304,7 +1308,7 @@ With_element *st_select_lex::find_table_def_in_with_clauses(TABLE_LIST *table)
With_element *with_elem= sl->get_with_element();
if (with_elem)
{
With_clause *containing_with_clause= with_elem->get_owner();
containing_with_clause= with_elem->get_owner();
With_element *barrier= containing_with_clause->with_recursive ?
NULL : with_elem;
if ((found= containing_with_clause->find_table_def(table, barrier)))