I have a enquiry about creating view in MySQL workbench. I have error: " View's SELECT contains a subquery in the FROM clause" when saving.
This is a copy of my statement:
CREATE VIEW viewMorningReport AS
select z.AllocationDate, z.LocationName, z.StationName, a.00000100, b.01000200, c.02000300 from
(SELECT DISTINCT AllocationDate, LocationName, StationName FROM satsschema.employeeslot
where LocationName = 'T2 PML'
and StationName is not null) z
left outer join
(SELECT AllocationDate, LocationName, StationName, EmpName AS '00000100' FROM satsschema.employeeslot
WHERE Assigned = true
and (EmpTime = '00:00:00' && EmpTime < '01:00:00')) a
on z.LocationName = a.LocationName and z.StationName = a.StationName
left outer join
(SELECT AllocationDate, LocationName, StationName, EmpName AS '01000200' FROM satsschema.employeeslot
WHERE Assigned = true
and (EmpTime = '01:00:00' && EmpTime < '02:00:00')) b
on a.LocationName = b.LocationName and a.StationName = b.StationName
left outer join
(SELECT AllocationDate, LocationName, StationName, EmpName AS '02000300' FROM satsschema.employeeslot
WHERE Assigned = true
and (EmpTime = '02:00:00' && EmpTime < '03:00:00')) c
on b.LocationName = c.LocationName and b.StationName = c.StationName
Any idea where went wrong?
Best Answer
As the official documentation says
One option could be creating a View for each subquery. Another one, is modify your view, to avoid
subquerys
in thefrom
clause