Mysql innerjoin very slow - mysql

Question

I have an SQL query that takes over 4 hours to complete.
The query is as follows
UPDATE carepathaction a1
INNER JOIN carepathaction a2
ON a1.sourceoid = a2.oid
INNER JOIN carepathgroup g
ON g.sourceoid = a2.carepathgroupoid
INNER JOIN carepathphase f
ON f.oid = g.carepathphaseoid
SET a1.carepathgroupoid = g.oid
WHERE f.code = 'EDIT'
He has to update 65000 items. Is there some optimalization i can do in this query?
CarePathAction
CREATE TABLE `carepathaction`
(
`oid` INT(11) NOT NULL,
`typeid` CHAR(1) NOT NULL DEFAULT 'X',
`sequencenumber` INT(11) NOT NULL,
`description` VARCHAR(1024) NOT NULL,
`duration` INT(11) NOT NULL comment 'In minutes',
`deadline` INT(11) NOT NULL comment
'# dagen in combinatie met deadlineType (sinds begin traject of sinds begin deze actie)'
,
`deadlinetype` INT(11) NOT NULL comment
'1) = deadline sinds zorgpad\n2) = deadline sinds start deze actie\n3) = deadline sinds zorgpadfase'
,
`repeatperweek` INT(11) DEFAULT NULL,
`numbertorepeat` INT(11) DEFAULT NULL,
`carepathoid` INT(11) DEFAULT NULL,
`usertaskoid` INT(11) DEFAULT NULL,
`templateattachment` VARCHAR(45) DEFAULT NULL,
`partyrolecategoryoid` INT(11) DEFAULT NULL,
`automatic` BIT(1) NOT NULL DEFAULT b'0',
`carepathphaseoid` INT(11) DEFAULT NULL,
`parentoid` INT(11) DEFAULT NULL,
`documentoid` INT(11) DEFAULT NULL,
`epdtemplateoid` INT(11) DEFAULT NULL,
`producttypeoid` INT(11) DEFAULT NULL,
`evaluateby` INT(11) DEFAULT NULL,
`pathlock` BIT(1) NOT NULL DEFAULT b'0',
`carepathgroupoid` INT(11) NOT NULL,
`activitygroupoid` INT(11) DEFAULT NULL,
`title` VARCHAR(45) DEFAULT NULL,
`carepathactionswitchtype` INT(11) DEFAULT NULL,
`modulesdomaincode` VARCHAR(10) DEFAULT NULL,
`startday` INT(11) NOT NULL DEFAULT '0',
`sourceoid` INT(11) DEFAULT NULL,
`templatefilename` VARCHAR(100) DEFAULT NULL,
`istask` BIT(1) NOT NULL DEFAULT b'0',
`typecontact` INT(11) DEFAULT NULL,
`carepathactionepdoid` INT(11) DEFAULT NULL,
`carepathactiontreatmentplanoid` INT(11) DEFAULT NULL,
`clientportalenabled` BIT(1) DEFAULT NULL,
`startafternumberofdaysepddatefield` INT(11) DEFAULT NULL,
`startafterdateepdfieldoid` INT(11) DEFAULT NULL,
`epdtemplatefieldoid` INT(11) DEFAULT NULL,
PRIMARY KEY (`oid`),
KEY `carepathactionfk1_idx` (`carepathoid`),
KEY `carepathactionfk2_idx` (`carepathphaseoid`),
KEY `carepathactionfk3_idx` (`documentoid`),
KEY `carepathactionfk4_idx` (`epdtemplateoid`),
KEY `carepathactionfk5_idx` (`producttypeoid`),
KEY `carepathactionfk6_idx` (`carepathgroupoid`),
KEY `carepathactionfk6_idx1` (`activitygroupoid`),
KEY `carepathactionfk7_idx` (`parentoid`),
KEY `carepathactionfk8_idx` (`usertaskoid`),
KEY `carepathactionfk10_idx` (`partyrolecategoryoid`),
KEY `carepathactionfk11_idx` (`carepathactionepdoid`),
KEY `carepathactionfk12_idx` (`carepathactiontreatmentplanoid`),
KEY `carepathactionfk13_idx` (`startafterdateepdfieldoid`),
KEY `carepathactionfk14_idx` (`epdtemplatefieldoid`),
CONSTRAINT `carepathactionfk14` FOREIGN KEY (`epdtemplatefieldoid`)
REFERENCES `epdtemplatefield` (`oid`) ON DELETE no action ON UPDATE no
action,
CONSTRAINT `carepathactionfk1` FOREIGN KEY (`carepathoid`) REFERENCES
`carepath` (`oid`) ON DELETE no action ON UPDATE no action,
CONSTRAINT `carepathactionfk10` FOREIGN KEY (`partyrolecategoryoid`)
REFERENCES `partyrolecategory` (`oid`) ON DELETE no action ON UPDATE no
action,
CONSTRAINT `carepathactionfk11` FOREIGN KEY (`carepathactionepdoid`)
REFERENCES `carepathaction` (`oid`) ON DELETE no action ON UPDATE no action
,
CONSTRAINT `carepathactionfk12` FOREIGN KEY (
`carepathactiontreatmentplanoid`) REFERENCES `carepathaction` (`oid`) ON
DELETE no action ON UPDATE no action,
CONSTRAINT `carepathactionfk13` FOREIGN KEY (`startafterdateepdfieldoid`)
REFERENCES `carepathaction` (`oid`) ON DELETE no action ON UPDATE no action
,
CONSTRAINT `carepathactionfk2` FOREIGN KEY (`carepathphaseoid`) REFERENCES
`carepathphase` (`oid`) ON DELETE no action ON UPDATE no action,
CONSTRAINT `carepathactionfk3` FOREIGN KEY (`documentoid`) REFERENCES
`document` (`oid`) ON DELETE no action ON UPDATE no action,
CONSTRAINT `carepathactionfk4` FOREIGN KEY (`epdtemplateoid`) REFERENCES
`epdtemplate` (`oid`) ON DELETE no action ON UPDATE no action,
CONSTRAINT `carepathactionfk5` FOREIGN KEY (`producttypeoid`) REFERENCES
`producttype` (`oid`) ON DELETE no action ON UPDATE no action,
CONSTRAINT `carepathactionfk6` FOREIGN KEY (`carepathgroupoid`) REFERENCES
`carepathgroup` (`oid`) ON DELETE no action ON UPDATE no action,
CONSTRAINT `carepathactionfk7` FOREIGN KEY (`parentoid`) REFERENCES
`carepathaction` (`oid`) ON DELETE no action ON UPDATE no action,
CONSTRAINT `carepathactionfk8` FOREIGN KEY (`usertaskoid`) REFERENCES
`tasktoschedule` (`oid`) ON DELETE no action ON UPDATE no action
)
CarePathGroup
CREATE TABLE `carepathgroup`
(
`oid` INT(11) NOT NULL,
`sequencenumber` INT(11) NOT NULL,
`title` VARCHAR(50) NOT NULL,
`carepathoid` INT(11) DEFAULT NULL,
`carepathphaseoid` INT(11) NOT NULL,
`sourceoid` INT(11) DEFAULT NULL,
PRIMARY KEY (`oid`),
KEY `carepathgroupfk1_idx` (`carepathoid`),
KEY `carepathgroupfk2_idx` (`carepathphaseoid`),
CONSTRAINT `carepathgroupfk2` FOREIGN KEY (`carepathphaseoid`) REFERENCES
`carepathphase` (`oid`) ON DELETE no action ON UPDATE no action
)
CarePathPhase
CREATE TABLE `carepathphase`
(
`oid` INT(11) NOT NULL,
`code` VARCHAR(6) NOT NULL,
`description` VARCHAR(45) NOT NULL,
`sequencenumber` INT(11) NOT NULL DEFAULT '0',
`carepathoid` INT(11) DEFAULT NULL,
`carepathphasetype` INT(11) NOT NULL DEFAULT '0',
`sourceoid` INT(11) DEFAULT NULL,
PRIMARY KEY (`oid`),
KEY `carepathphasefk1_idx` (`carepathoid`),
CONSTRAINT `carepathphasefk1` FOREIGN KEY (`carepathoid`) REFERENCES
`carepath` (`oid`) ON DELETE no action ON UPDATE no action
)
explain
1 SIMPLE f ALL PRIMARY 61925 Using where
1 SIMPLE g ref CarePathGroupFK2_idx CarePathGroupFK2_idx 4 amis.f.Oid 1
1 SIMPLE a1 ALL 166582 Using join buffer
1 SIMPLE a2 eq_ref PRIMARY,CarePathActionFK6_idx PRIMARY 4 amis.a1.SourceOid 1 Using where

Answer 1

There are two ALL join types in the explain, these are the ones you need to focus (for details see mysql documentation on explain output).
The create table statements show that:
You do not have index on the carepathphase.code field, which is used in the where criteria, so you should rectify that.
There is no index on carepathaction.sourceoid, which is used in the join, so you should create one there. You may try to create a combined index on oid, sourceoid fields (or the other way around) because mysql may be able to use the combined index to match the rows.
Run explain on the select (if you have mysql v5.6 or newer, then you can run it directly on the update) after adding the indexes and see, if the ALLs change. The 2nd all next to a2 seems to be the real critical stuff to me.