mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-04-26 18:25:30 +02:00
Code Issues Projects Releases Packages Wiki Activity

Fixed many problems in the code of With_element::check_unrestricted_recursive().

Browse source 
Added the check whether there are set functions in the specifications of recursive CTE.
Added the check whether there are recursive references in subqueries.
Introduced boolean system variable 'standards_compliant_cte'. By default it's set to 'on'.
When it's set to 'off' non-standard compliant CTE can be executed.
This commit is contained in:
Galina Shalygina 2016-05-19 22:07:53 +03:00
commit 46a2e41398
13 changed files with 675 additions and 52 deletions
Download patch file Download diff file Expand all files Collapse all files

12
sql/sql_cte.h
View file

@ -35,6 +35,7 @@ private:
directly or indirectly from the i-th with element.
*/
table_map derived_dep_map;
table_map sq_dep_map;
table_map work_dep_map; // dependency map used for work
/* Dependency map of with elements mutually recursive with this with element */
table_map mutually_recursive;
@ -90,7 +91,7 @@ public:
List <LEX_STRING> list,
st_select_lex_unit *unit)
: next_elem(NULL), base_dep_map(0), derived_dep_map(0),
work_dep_map(0), mutually_recursive(0),
sq_dep_map(0), work_dep_map(0), mutually_recursive(0),
references(0), table(NULL),
query_name(name), column_list(list), spec(unit),
is_recursive(false), with_anchor(false),
@ -151,7 +152,8 @@ public:
friend class With_clause;
friend
bool st_select_lex::check_unrestricted_recursive();
bool
st_select_lex::check_unrestricted_recursive(bool only_standard_compliant);
friend
bool TABLE_LIST::is_with_table_recursive_reference();
};
@ -241,9 +243,11 @@ public:
friend class With_element;
friend
bool check_dependencies_in_with_clauses(THD *thd, With_clause *with_clauses_list);
bool
check_dependencies_in_with_clauses(THD *thd, With_clause *with_clauses_list);
friend
bool st_select_lex::check_unrestricted_recursive();
bool
st_select_lex::check_unrestricted_recursive(bool only_standard_compliant);
};