Ruby DBI: How to add the execute arguments when use method "in (?)" -


here sample code using dbi:

begin   dbh = dbi.connect("dbi:mysql:test:localhost", "testuser", "testpassword")    sql = "select u.email, u.account_name, u.height, u.weight           test_users           id in (?)          group u.id          order u.id          outfile '/tmp/test.csv'          fields terminated ','          enclosed '\"'          lines terminated '\n'"    sth = dbh.prepare(sql)   sth.execute('1,2,3')   sth.finish rescue dbi::databaseerror => e   puts "an error occurred"   puts "error code:    #{e.err}"   puts "error message: #{e.errstr}" ensure   # disconnect server   dbh.disconnect if dbh end

but sql gives me like, value of "in" method incorrect:

  select u.email, u.account_name, u.height, u.weight    test_users    id in ('1,2,3')   group u.id   order u.id   outfile '/tmp/test.csv'   fields terminated ','   enclosed '\"'   lines terminated '\n'"

i want this(notice change result is: "id in (1,2,3)"):

   select u.email, u.account_name, u.height, u.weight     test_users     id in (1,2,3)    group u.id    order u.id    outfile '/tmp/test.csv'    fields terminated ','    enclosed '\"'

that's not how in clause works, need have same amount of ? number of arguments, in case, should have:

sql = "select u.email, u.account_name, u.height, u.weight           test_users           id in (?,?,?)          group u.id          order u.id          outfile '/tmp/test.csv'          fields terminated ','          enclosed '\"'          lines terminated '\n'"

and pass each value query.


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