public function havingString()
{
$ret = '';
if (is_array($this->having) && count($this->having)) {
foreach ($this->having as $having_data) {
if (is_numeric($having_data['value'])) {
$value = $having_data['value'];
} else {
$value = '\'' . $having_data['value'] . '\'';
}
if ($having_data['table']) {
$field_string = $having_data['table'] . '.' . $having_data['field'];
} else {
$field_string = $having_data['field'];
}
if ($having_data['function']) {
$field_string = $having_data['function'] . '(' . $field_string . ')';
}
$cur_str = $field_string . ' ' . Clause::getStringSeparator($having_data['type']) . ' ' . $value;
if ($ret) {
$ret = '(' . $ret . ') ' . Clause::relateHowToString($having_data['relate_how']) . ' (' . $cur_str . ')';
} else {
$ret = $cur_str;
}
}
$ret = ' HAVING(' . $ret . ')';
} else {
if ($this->having) {
throw new Exception('Incorrect having clause: ' . $this->having);
}
}
return $ret;
}
