如何将 SQL 写入 JPQL

Question

I am learning JPQL, but I think this is very complex, I am good sql server user, but I cant translate this, help please.

SELECT * FROM liquidacion AS l INNER JOIN tipo_plan AS tp ON l.plan_id = tp.id 
WHERE ((tp.nombre like @nombrePlan OR @nombrePlan IS NULL ) AND 
    (tp.id_ips = @idPlanIps OR @idPlanIps IS NULL) AND
    (l.periodo = @periodo OR @periodo IS NULL))

Answer 1

You'll need to switch " * " to "l", in front of parameter names you should use " : " and instead of name tables you'll have the name of the class that represents the entity that you're using. So in the end you'll have something like: SELECT l FROM Liquidacion AS l INNER JOIN TipoPlan AS tp ON l.plan_id = tp.id WHERE ((tp.nombre like :nombrePlan OR :nombrePlan IS NULL ) AND (tp.id_ips = :idPlanIps OR :idPlanIps IS NULL) AND (l.periodo = :periodo OR :periodo IS NULL))