If I have an application where I’m building the IN list dynamically, and it might end up empty, what I sometimes do is initialize the list with an impossible value and add to that. E.g. if it’s a list of usernames, I’ll start with an empty string, since that’s not a possible username. If it’s … Read more
The above accepted answer is not correct and led me off track for many days !! JPA and Hibernate both accept collections in native query using Query. You just need to do String nativeQuery = “Select * from A where name in :names”; //use (:names) for older versions of hibernate Query q = em.createNativeQuery(nativeQuery); q.setParameter(“names”, … Read more
An in statement will be parsed identically to field=val1 or field=val2 or field=val3. Putting a null in there will boil down to field=null which won’t work. (Comment by Marc B) I would do this for clairity SELECT * FROM tbl_name WHERE (id_field IN (‘value1’, ‘value2’, ‘value3’) OR id_field IS NULL)
You can’t use the IN clause like that. It compiles to a single string in your IN clause. But an IN clause needs separate values. WHERE id_campo not in (@idcamposexcluidos) compiles to WHERE id_campo not in (‘817,803,495’) but it should be WHERE id_campo not in (‘817′,’803′,’495’) To overcome this either use dynamic SQL or in … Read more
This is an example where I use the table variable to list multiple values in an IN clause. The obvious reason is to be able to change the list of values only one place in a long procedure. To make it even more dynamic and alowing user input, I suggest declaring a varchar variable for … Read more
How about session.query(MyUserClass).filter(MyUserClass.id.in_((123,456))).all() edit: Without the ORM, it would be session.execute( select( [MyUserTable.c.id, MyUserTable.c.name], MyUserTable.c.id.in_((123, 456)) ) ).fetchall() select() takes two parameters, the first one is a list of fields to retrieve, the second one is the where condition. You can access all fields on a table object via the c (or columns) property.
From the manual: The number of values in the IN list is only limited by the max_allowed_packet value.
There’s indeed no straightforward way to do this in JDBC. Some JDBC drivers seem to support PreparedStatement#setArray() on the IN clause. I am only not sure which ones that are. You could just use a helper method with String#join() and Collections#nCopies() to generate the placeholders for IN clause and another helper method to set all … Read more
An analysis of the various options available, and the pros and cons of each is available in Jeanne Boyarsky’s Batching Select Statements in JDBC entry on JavaRanch Journal. The suggested options are: Prepare SELECT my_column FROM my_table WHERE search_column = ?, execute it for each value and UNION the results client-side. Requires only one prepared … Read more
Put the values in a temporary table and then do a select where id in (select id from temptable)