public function buildPgSQLDefinitionSql(BaseDriver $driver, ArgumentArray $args)
{
$isa = $this->isa ?: 'str';
$sql = '';
$sql .= $driver->quoteIdentifier($this->name);
$sql .= $this->buildTypeClause($driver);
$sql .= $this->buildTimeZoneClause($driver);
$sql .= $this->buildUnsignedClause($driver);
$sql .= $this->buildNullClause($driver);
$sql .= $this->buildDefaultClause($driver);
return $sql;
}