php - 按季度分组年度

Question

我需要在我的 .php 文件中按年按季度分组。在 bold 类型中，我显示了需要修复的代码，也就是 switch case 4。刚才我对年、月、周和日进行了分组，但现在我需要季度名称 case 4。我试过了GROUP FUNCTION 的代码，但在 2010 年和 2011 年向我展示了 5 个组，这是错误的。

switch ($level) 
{

  case '4':**
    $group = "FLOOR(EXTRACT(YEAR_MONTH FROM FROM_UNIXTIME(invoice_date))/3)";</b>
    break;
}

固定是

SQL PARTcase '4':                    $group = "EXTRACT(YEAR FROM FROM_UNIXTIME(invoice_date)) as group_field2, EXTRACT(QUARTER FROM FROM_UNIXTIME(invoice_date))";                    break;    $sql_select = $db->query("SELECT sum(amount) AS invoice_amount, " . $group . " AS group_field FROM                 " . DB_PREFIX . "invoices WHERE invoice_date>= " . $startup . " " . $user_query . " GROUP BY group_field, group_field2 ORDER BY group_field2 DESC, group_field DESC");TEXT - LINK PART                    case '4':                        $start = strtotime('+' . (($view_details_received['group_field'] - 1) * 3) . ' months', strtotime($view_details_received['group_field2'] . '/1/1'));                        $finish = strtotime('+' . (($view_details_received['group_field'] - 1) * 3 + 3) . ' months', strtotime($view_details_received['group_field2'] . '/1/1'));                        $start = getdate($start);                        $finish = getdate($finish - 86400);                        $title = 'Q' . $view_details_received['group_field2'] . ', ' . $view_details_received['group_field'];                        break;

Answer 1

您可以在 SQL 中使用 EXTRACT(QUARTER FROM date) 然后进行常规 GROUP BY

参见 EXTRACT documentation在 MySQL 网页和 table of possible arguments