PreparedStatement IN clause alternatives?

Question

What are the best workarounds for using a SQL IN clause with instances of java.sql.PreparedStatement, which is not supported for multiple values du

Answer 1

You can use Collections.nCopies to generate a collection of placeholders and join them using String.join:

List params = getParams();
String placeHolders = String.join(",", Collections.nCopies(params.size(), "?"));
String sql = "select * from your_table where some_column in (" + placeHolders + ")";
try (   Connection connection = getConnection();
        PreparedStatement ps = connection.prepareStatement(sql)) {
    int i = 1;
    for (String param : params) {
        ps.setString(i++, param);
    }
    /*
     * Execute query/do stuff
     */
}