I want to use DBunit to test my query in our application. I know that there is Itable Object in the DBunit so it can support Table query, but there is a view in my SQL and I don't find any Object like Iview. So does DBunit support View query and how to deal with this situation?
Thanks for your help in advance.
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I am able to obtain all required data from SQL Query. is it good practice to execute big select sql query in JPA in In spring boot. or get required fields from select query. write logic in service level.
Hello I am using a spring boot application and my requirement is to query pg_stat_statements table for some metrics. I am confused as I cant define a repository because this is not an entity.
Try to create view with this table, add row_number() as Id of this view, then create entity based on this view and use it in HQL
I am new to tuning and I am trying hard learn things as Oracle is like an ocean.
I have a query built on views that is running longer. I have query like:
select t2.col1,t2.col2
from vw_tab1 t1,vw_tab1 t2,tab3 t3
where t1.col3=123
and t2.col3<>123
and t2.col4=t1.col5
AND t3.col2=t2.col2;
We are using single view multiple times in the same query. Does this run the query in view twice? Suggestions much appreciated. I am running this query in Oracle 11g single instance database.
Yes, the tables that make up the view vw_tab1 will be queried twice, once for each instance ( t1 and t2 ). If you were to issue an explain plan of your statement, you should see oracle querying the tables that make up the view, not the actual view.
I would like to know how I can get the metadata of an object in a Vertica database; like metadata of a table. Is there any table that stores the metadata of objects (functions, views, tables) in Vertica Database.
For example in Oracle, I could type the following and get a detailed description of tables or see the code of a procedure.
oracle :> desc table_name;
or
oracle :> edit proc_name;
I know that I can see the tables from my schemas with \dt command, but is there any way I can see the DDL statements that created the objects?
Thanks, but this is not what I want. I was looking for is the export_objects() function:
select export_objects('','object_name')
This way you will get the creation script for the object.
\d table-name should get you what you need.
Extra tip: If you specify only the schema, you will get all of the objects inside that schema. Sure beats having to enter a loop where you run export_objects() for every object.
For example, in Hibernate, there is the saveOrUpdate method, which does a select first, and depending on if there is a record available, it does and insert or an update. However, Oracle DB supports an 'upsert', in which you can do an insert or an update in one statement.
I know Hibernate doesn't support this out of the box, are there any other ORM's that support it? Also, has anyone managed to override Hibernate to support upserts?
Many thanks