Question

I am trying to use dynamically created list in WHERE, for example:

select * from books where id in (123, 120, 125) and bookCover = 'Hardcover'

I want to use it with rawQuery and I have prepared SQL in “?” form, for example:

select * from books here id in (?) and bookCover = ?

is there any way, how to put a list of “ids” in the IN clause of the select? or do I have to forget about prepared statements with “?” ?

Thanks in advance for any help. Searched

Answer 1

No – I do NOT know ANY DB (like Oracle, SQL Server, SQLite, Postgres etc.) which provides for what you ask…

The nearest solution you can get is to insert the IDs into a second table and then use a subquery in the IN part…

MyIDTable hat 2 fields QNO (is just a key) and ID (contains the IDs you want in your IN… you first insert 3 rows with the same QNO and the respective IDs…

INSERT INTO MyIDTable (QNO, ID) VALUES (3, 120);
INSERT INTO MyIDTable (QNO, ID) VALUES (3, 123);
INSERT INTO MyIDTable (QNO, ID) VALUES (3, 125);

Then you can do a SELECT like this:

select * from books where id in (SELECT T.ID FROM MyIDTable T WHERE T.QNO = 3) and
bookCover = 'Hardcover'

Which basically allows for this:

select * from books where id in (SELECT T.ID FROM MyIDTable T WHERE T.QNO = ?) and
bookCover = ?

After you are done looking for that specific set of IDs you can clean up by DELETE FROM MyIDTable WHERE QNO = 3.