jpa + hibernate Query for get records from two tables with join

Question

I need to get record like :-

toolTypeId, quantity, toolName , onTruck, Damage, loss
    2         50        test1      20      25      5

onTruck, Damage, loss :- total records from list

first 3 are from toolsType table and last 3 from userTools.

My model classes :-

ToolsType.java

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String toolName;
private Long quantity;

UserTools.java

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;

@OneToOne
private ToolsType toolsType;
private Long loss;
private Long onTruck;
private Long damage;

I am trying something like that in my Repository file :- select count(toolstype.id), toolstype.toolName, quantity FROM toolstype GROUP BY(toolstype.id);

I know its not correct Please help me for correct query for this issue.

Thanks

Answer 1

Use this query. Hope it will help you. You need to use alias in this case.

select count(ttype.id), ttype.toolName, ttype.quantity FROM toolstype as ttype GROUP BY(ttype.id);

UPDATED Query is given below:

select count(ttype.id), ttype.toolName, ttype.quantity, utools.onTruck, utools.damage, utools.loss
FROM toolstype ttype, usertools utools 
where ttype.id = utools.id
GROUP BY ttype.toolName, ttype.quantity, utools.onTruck, utools.damage, utools.loss

Answer 2

You must use this JPQL query:

select tt.id, count(tt.id), tt.toolname, ut.onTruck, ut.damage, ut.loss
from UserTools ut
join ut.toolsType tt
group by tt.id, tt.toolname, ut.onTruck, ut.damage, ut.loss

You need to put all select values in the group by clause for the query to group the results.

UPDATE:

If you need the sum of UserTools values and all the ToolsType values in the result, the query would be:

select tt.id, count(tt.id), tt.toolname, sum(ut.onTruck), sum(ut.damage), sum(ut.loss)
from ToolsType tt, UserTools ut
where tt.id = ut.toolsType.id
group by tt.id, tt.toolname, ut.onTruck, ut.damage, ut.loss

I also think that the relation between UserTools and ToolType would be @ManyToOne instead of @OneToOne .