I have the following SQL statement. Which is working okay. Except in some cases the processing of the query takes a lot of time, resulting in a system time out. So I need to convert the statement. Probably with a JOIN.
I can't figure out how to convert this statement:
SELECT table1.id as id,
FROM table1, table2, table3, table4, table5
WHERE table1.id = table2.tabel1id
AND table2.table2id = table3.table2id
AND table3.table3id = table5.table3id
AND table5.somecode = '5'
AND table3.table3id = table4.name
AND table1.firstname LIKE '%John%'
GROUP BY table1.id
ORDER BY table3.name, table1.firstname, table1.lastname
select t1.id,t1.firstname,t3.name,t4.name from table1 as t1 inner join table2 as t2 on t1.id=t2.tabel1id inner join on table3 as t3 on t2.table2id=t3.table2id inner join on table4 as t4 on t3.table3id=t4.name inner join on table5 as t5 on t5.table3id=table3.table3id where t1.firstname like '%John%' and t5.somecode='5' group by t1.id order by t3.name,t1.firstname,t1.lastname