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MDEV-11953: support of brackets in UNION/EXCEPT/INTERSECT operations

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This commit is contained in:
Oleksandr Byelkin
2018-05-22 19:08:39 +02:00
parent 1b981b9edb
commit de745ecf29
298 changed files with 36118 additions and 3473 deletions
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26
sql/sql_cte.h
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@ -279,8 +279,7 @@ private:
*/
With_clause *next_with_clause;
/* Set to true if dependencies between with elements have been checked */
bool dependencies_are_checked;
bool dependencies_are_checked;
/*
The bitmap of all recursive with elements whose specifications
are not complied with restrictions imposed by the SQL standards
@ -304,9 +303,8 @@ public:
bool with_recursive;
With_clause(bool recursive_fl, With_clause *emb_with_clause)
: owner(NULL),
embedding_with_clause(emb_with_clause), next_with_clause(NULL),
dependencies_are_checked(false), unrestricted(0),
: owner(NULL), embedding_with_clause(emb_with_clause),
next_with_clause(NULL), dependencies_are_checked(false), unrestricted(0),
with_prepared_anchor(0), cleaned(0), stabilized(0),
with_recursive(recursive_fl)
{ }
@ -320,8 +318,12 @@ public:
last_next= &this->next_with_clause;
}
st_select_lex_unit *get_owner() { return owner; }
void set_owner(st_select_lex_unit *unit) { owner= unit; }
void attach_to(st_select_lex *select_lex);
With_clause *pop() { return embedding_with_clause; }
bool check_dependencies();
@ -354,7 +356,6 @@ bool With_element::is_unrestricted()
}
inline
bool With_element::is_with_prepared_anchor()
{
return owner->with_prepared_anchor & get_elem_map();
@ -436,11 +437,14 @@ void With_element::prepare_for_next_iteration()
inline
void st_select_lex_unit::set_with_clause(With_clause *with_cl)
{
with_clause= with_cl;
if (with_clause)
with_clause->set_owner(this);
void With_clause::attach_to(st_select_lex *select_lex)
{
for (With_element *with_elem= with_list.first;
with_elem;
with_elem= with_elem->next)
{
select_lex->register_unit(with_elem->spec, NULL);
}
}