Can I ask JDBCTemplate to expand a list parameter for use in an in() clause?

Question

Can I do something like this:

select * from mytable m where m.group_id in (?)

... and pass in a list or array of arguments to be expanded in to my parameter, ie:

select * from mytable m where m.group_id in (1,2,3,4)

Specifically, I'm using Spring and the JdbcTemplate/SimpleJdbcTemplate classes.

Answer 1

You can do it by using NamedParameterJdbcTemplate.

With your sample it would go something like:

NamedParameterJdbcTemplate db = ...;
List paramList = ...;

Map idsMap = Collections.singletonMap("ids", paramList);
db.query("select * from mytable m where m.group_id in (:ids)", idsMap);