ネストされた SP を呼び出すこの MySQL SP があります。負荷がかかるとうまく機能しないようです。
この SP は、ネストされた SP を呼び出し、一時テーブルを使用してデータをメイン SP に渡すため、負荷がかかると遅くなる可能性がありますか?
DELIMITER $$
drop procedure if exists `GeoAreaFlattened_Select`;
create procedure `GeoAreaFlattened_Select`(
_areas MEDIUMTEXT,
_comparisonGroup varchar(21844),
_parentArea varchar(21844),
_areaType varchar(21844)
)
begin
drop temporary table if exists areas;
-- areas
call CreateAreas(_areas, _comparisonGroup, _parentArea, _areaType);
SELECT
areas.ID,
areas.Code,
areas.Name,
areas.LevelId,
GeoAreaLevel.Name AS AreaTypeLabel,
GeoAreaLevel.Identifier AS AreaTypeIdentifier
FROM
areas
INNER JOIN
GeoAreaLevel
ON
areas.levelid = GeoAreaLevel.id
ORDER BY areas.name ASC;
drop temporary table areas;
end
ネストされた SP:
-- --------------------------------------------------------------------------------
-- Routine DDL
-- Note: comments before and after the routine body will not be stored by the server
-- --------------------------------------------------------------------------------
drop procedure if exists `CreateAreas`;
DELIMITER $$
CREATE PROCEDURE `CreateAreas`(
_areas varchar(21844),
_comparisonGroup varchar(21844),
_parentArea varchar(21844),
_areaType varchar(21844)
)
BEGIN
-- create temporary table "areas"
-- fill with area ids
create temporary table areas (
id int not null,
code varchar(30),
name varchar(100),
shortName varchar(100),
levelid int not null,
sortOrder int not null,
key (id)
);
-- assumes that only one of the 3 options is valid, areas, comparison group, bounded comparison group
if (_areas is not null) then
set @sql = concat('insert into areas (id, code, name, shortName, levelid, sortOrder) select id, Code, Name, ShortName, LevelID, 0 from GeoArea where Code in (''', replace(_areas, ',', ''','''), ''')');
prepare stmt from @sql;
execute stmt;
deallocate prepare stmt;
elseif (_comparisonGroup is not null) then
-- might not be the most efficient way, but is consistent with the approach above, and we do not expect the list to be long
insert into areas (id, code, name, shortName, levelid, sortOrder)
select GeoAreaID, GeoArea.Code, GeoArea.Name, GeoArea.ShortName, GeoArea.LevelID, SortOrder
from ComparisonGroupGeoAreaLink
INNER JOIN
GeoArea
ON GeoArea.ID = GeoAreaID
where ComparisonGroupID = (select id from ComparisonGroup where Identifier = _comparisonGroup)
and IsMember = 1;
elseif (_parentArea is not null and _areaType is not null) then
-- might not be the most efficient way, but is consistent with the approach above, and we do not expect the list to be long
insert into areas (id, code, name, shortName, levelid, sortOrder)
select a.ID, a.Code, a.Name, a.ShortName, a.LevelID, 0
from (select id from GeoArea where Code = _parentArea) as t
INNER JOIN
GeoAreaLinkCache c
ON
c.ParentAreaID = t.id
inner join GeoArea a
on c.ChildAreaID = a.ID
INNER JOIN
(select id from GeoAreaLevel where Identifier = _areaType) as l
ON
a.LevelID = l.id;
elseif (_areaType is not null) then
-- might not be the most efficient way, but is consistent with the approach above, and we do not expect the list to be long
set @sql = concat('insert into areas (id, code, name, shortName, levelid, sortOrder)
select a.ID, a.Code, a.Name, a.ShortName, a.LevelID, 0
from
(select id from GeoAreaLevel where Identifier in (''', replace(_areaType, ',', ''','''), ''')) l
INNER JOIN
GeoArea a
ON
a.LevelID = l.id');
prepare stmt from @sql;
execute stmt;
deallocate prepare stmt;
end if;
END