database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

MDEV-7773: Aggregate stored functions

Browse Source 
This commit implements aggregate stored functions. The basic idea behind
the feature is:

* Implement a special instruction FETCH GROUP NEXT ROW that will pause
the execution of the stored function. When the instruction is reached,
execution of the initial query resumes "as if" the function returned.
This gives the server the opportunity to advance to the next row in the
result set.

* Stored aggregates behave like regular aggregate functions. The
implementation of thus resides in the class Item_sum_sp. Because it is
an aggregate function, for each new row in the group, the
Item_sum_sp::add() method will be called. This is when execution resumes
and the function does another iteration to "add" one extra element to
the final result.

* When the end of group is reached, val_xxx() method will be called for
the item. This case is handled by another execute step for the stored
function, only with a special flag to force a call to the return
handler. See Item_sum_sp::execute() for details.

To allow this pause and resume semantic, we must preserve the function
context across executions. This is stored in Item_sp::sp_query_arena only for
aggregate stored functions, but has no impact for regular functions.

We also enforce aggregate functions to include the "FETCH GROUP NEXT ROW"
instruction.

Signed-off-by: Vicențiu Ciorbaru <vicentiu@mariadb.org>
This commit is contained in:
Varun Gupta
2017-11-22 21:09:24 +02:00
committed by Vicențiu Ciorbaru
parent 7448b01bb5
commit 60c446584c
33 changed files with 2307 additions and 84 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
mysql-test/suite/funcs_1/r/storedproc.result
View File

@ -1771,48 +1771,48 @@ Testcase 4.1.9:
drop procedure
--------------------------------------------------------------------------------
SELECT * from mysql.proc where specific_name='sp9';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
DROP PROCEDURE IF EXISTS sp9;
SELECT * from mysql.proc where specific_name='sp9';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
CREATE PROCEDURE sp9()SELECT * from t1;
SELECT * from mysql.proc where specific_name='sp9';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db_storedproc sp9 PROCEDURE sp9 SQL CONTAINS_SQL NO DEFINER SELECT * from t1 root@localhost created modified latin1 latin1_swedish_ci latin1_swedish_ci SELECT * from t1
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
db_storedproc sp9 PROCEDURE sp9 SQL CONTAINS_SQL NO DEFINER SELECT * from t1 root@localhost created modified latin1 latin1_swedish_ci latin1_swedish_ci SELECT * from t1 NONE
DROP PROCEDURE sp9;
SELECT * from mysql.proc where specific_name='sp9';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
CREATE PROCEDURE sp9()SELECT * from t1;
SELECT * from mysql.proc where specific_name='sp9';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db_storedproc sp9 PROCEDURE sp9 SQL CONTAINS_SQL NO DEFINER SELECT * from t1 root@localhost created modified latin1 latin1_swedish_ci latin1_swedish_ci SELECT * from t1
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
db_storedproc sp9 PROCEDURE sp9 SQL CONTAINS_SQL NO DEFINER SELECT * from t1 root@localhost created modified latin1 latin1_swedish_ci latin1_swedish_ci SELECT * from t1 NONE
DROP PROCEDURE IF EXISTS sp9;
SELECT * from mysql.proc where specific_name='sp9';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
Testcase 4.1.10:
----------------
DROP FUNCTION
--------------------------------------------------------------------------------
SELECT * from mysql.proc where specific_name='fn10' and type='function';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
DROP FUNCTION IF EXISTS fn10;
SELECT * from mysql.proc where specific_name='fn10' and type='function';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
CREATE FUNCTION fn10() returns int return 100;
SELECT * from mysql.proc where specific_name='fn10' and type='function';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db_storedproc fn10 FUNCTION fn10 SQL CONTAINS_SQL NO DEFINER int(11) return 100 root@localhost created modified latin1 latin1_swedish_ci latin1_swedish_ci return 100
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
db_storedproc fn10 FUNCTION fn10 SQL CONTAINS_SQL NO DEFINER int(11) return 100 root@localhost created modified latin1 latin1_swedish_ci latin1_swedish_ci return 100 NONE
DROP FUNCTION fn10;
SELECT * from mysql.proc where specific_name='fn10' and type='function';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
CREATE FUNCTION fn10() returns int return 100;
SELECT * from mysql.proc where specific_name='fn10' and type='function';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db_storedproc fn10 FUNCTION fn10 SQL CONTAINS_SQL NO DEFINER int(11) return 100 root@localhost created modified latin1 latin1_swedish_ci latin1_swedish_ci return 100
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
db_storedproc fn10 FUNCTION fn10 SQL CONTAINS_SQL NO DEFINER int(11) return 100 root@localhost created modified latin1 latin1_swedish_ci latin1_swedish_ci return 100 NONE
DROP FUNCTION IF EXISTS fn10;
SELECT * from mysql.proc where specific_name='fn10' and type='function';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
Testcase 4.1.11:
----------------
@ -16172,15 +16172,15 @@ insert into t43 values('abcde', 'a!@#$%^&*(');
CREATE PROCEDURE d1.sp4()
SELECT * from d1.t43;
SELECT * from mysql.proc where specific_name = 'sp4';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
d1 sp4 PROCEDURE sp4 SQL CONTAINS_SQL NO DEFINER SELECT * from d1.t43 root@localhost modified created latin1 latin1_swedish_ci latin1_swedish_ci SELECT * from d1.t43
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
d1 sp4 PROCEDURE sp4 SQL CONTAINS_SQL NO DEFINER SELECT * from d1.t43 root@localhost modified created latin1 latin1_swedish_ci latin1_swedish_ci SELECT * from d1.t43 NONE
USE db_storedproc;
DROP DATABASE d1;
CREATE DATABASE d1;
USE d1;
create table t44(a char(5), b char(10));
SELECT * from mysql.proc where specific_name = 'sp4';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
USE db_storedproc;
DROP DATABASE d1;
@ -16222,8 +16222,8 @@ CREATE PROCEDURE sp8 ( n char(20) ) sql security DEFINER comment 'initial'
USE d2;
alter procedure d1.sp8 sql security DEFINER comment 'updated';
SELECT * from mysql.proc where specific_name='sp8' and db='d1';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
d1 sp8 PROCEDURE sp8 SQL CONTAINS_SQL NO DEFINER n char(20) SELECT * from t1 where t1.f1 = n root@localhost modified created updated latin1 latin1_swedish_ci latin1_swedish_ci SELECT * from t1 where t1.f1 = n
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
d1 sp8 PROCEDURE sp8 SQL CONTAINS_SQL NO DEFINER n char(20) SELECT * from t1 where t1.f1 = n root@localhost modified created updated latin1 latin1_swedish_ci latin1_swedish_ci SELECT * from t1 where t1.f1 = n NONE
Testcase 4.4.9:
--------------------------------------------------------------------------------
@ -16239,7 +16239,7 @@ END//
USE d2;
alter function d1.fn2 sql security DEFINER comment 'updated';
SELECT * from mysql.proc where specific_name='fn2' and db='d1';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
d1 fn2 FUNCTION fn2 SQL CONTAINS_SQL NO DEFINER n int int(11) BEGIN
declare a int;
set a = 0.9 * n;
@ -16248,7 +16248,7 @@ END root@localhost modified created updated latin1 latin1_swedish_ci latin1_swe
declare a int;
set a = 0.9 * n;
return a;
END
END NONE
Testcase 4.4.10:
--------------------------------------------------------------------------------
@ -16258,7 +16258,7 @@ SELECT * from t1 where t1.f1 = n;
USE d2;
DROP PROCEDURE d1.sp9;
SELECT * from mysql.proc where specific_name='sp9' and db='d1';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
Testcase 4.4.11:
--------------------------------------------------------------------------------
@ -16272,7 +16272,7 @@ END//
USE d2;
DROP FUNCTION d1.fn3;
SELECT * from mysql.proc where specific_name='fn3' and db='d1';
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8
db name type specific_name language sql_data_access is_deterministic security_type param_list returns body definer created modified sql_mode comment character_set_client collation_connection db_collation body_utf8 aggregate
USE db_storedproc;
DROP DATABASE d1;
DROP DATABASE d2;