title: Partition in postgresql
body: <p>everyone!</p>
  <p>Im new in postgresql and try to partition the existing table.
  So I want something like</p>
  <p><code>alter table t1 partition by range (c_date);</code></p>
  <p>but get a syntax error at or near partition.
  Also I tried to add <code>start from</code> and get same error too.
  Can I partition table without create new one?</p>