== Using connections

When you need to execute sequential queries (without a transaction), you can create a new connection
or borrow one from the pool:

[source,java]
----
pool.getConnection(ar1 -> {
  if (ar1.succeeded()) {
    SqlConnection connection = ar1.result();

    connection
      .query("SELECT * FROM users WHERE id='julien'")
      .execute(ar2 -> {
      if (ar1.succeeded()) {
        connection
          .query("SELECT * FROM users WHERE id='paulo'")
          .execute(ar3 -> {
          // Do something with rows and return the connection to the pool
          connection.close();
        });
      } else {
        // Return the connection to the pool
        connection.close();
      }
    });
  }
});
----

Prepared queries can be created:

[source,java]
----
connection.prepare("SELECT * FROM users WHERE first_name LIKE $1", ar1 -> {
  if (ar1.succeeded()) {
    PreparedStatement pq = ar1.result();
    pq.query().execute(Tuple.of("julien"), ar2 -> {
      if (ar2.succeeded()) {
        // All rows
        RowSet<Row> rows = ar2.result();
      }
    });
  }
});
----