如何使用 PHP 显示具有 MIN、MAX 和 AVG 值（变量 2）的 SQL SUM 查询结果（变量 1）？

Question

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一个关于手术的数据库包含很多 table 和这些字段：table dat_patient（患者，缩写为“p”）数字大约 100，table dat_optherapie（手术，缩写为“op”）大约 1,000 个字段。以下是我用于查询的字段的说明：

p.ID 是与手术中的op.patID相关的自动增量患者指数table。

op.OP1OPVerfahren 包含手术过程，每个手术过程可以有 29 个字符串值（从“1”到“28”和“99”）。

op.OP1Datum 包含手术日期。

op.revision 显示给定数据集的修订次数（对于跟踪更改很重要）。

我现在想列举 table 中执行的所有不同的外科手术 (29)。将 SQL 查询代码嵌入到我的 PHP 框架中效果很好：

基本SQL查询:

    SELECT
        SUM(op.OP1OPVerfahren = "0") AS "Keine Operation durchgeführt",
        SUM(op.OP1OPVerfahren = "1") AS "Bioenterics Intragastric Ballon (BIB)",
        SUM(op.OP1OPVerfahren = "2") AS "Gastric Banding",
        SUM(op.OP1OPVerfahren = "3") AS "Roux-en-Y Gastric Bypass",
        SUM(op.OP1OPVerfahren = "4") AS "Roux-en-Y Gastric Bypass banded",
        SUM(op.OP1OPVerfahren = "5") AS "Scopinaro",
        SUM(op.OP1OPVerfahren = "6") AS "Duodenal Switch (DS)",
        SUM(op.OP1OPVerfahren = "7") AS "Sleeve Resection",
        SUM(op.OP1OPVerfahren = "8") AS "Gastric Pacemaker",
        SUM(op.OP1OPVerfahren = "9") AS "Billroth II",
        SUM(op.OP1OPVerfahren = "10") AS "Gastroplasty",
        SUM(op.OP1OPVerfahren = "11") AS "Fobi / Capella Bypass",
        SUM(op.OP1OPVerfahren = "12") AS "Larrad",
        SUM(op.OP1OPVerfahren = "13") AS "Santoro",
        SUM(op.OP1OPVerfahren = "14") AS "DJB",
        SUM(op.OP1OPVerfahren = "15") AS "TOGA",
        SUM(op.OP1OPVerfahren = "16") AS "Endobarrier",
        SUM(op.OP1OPVerfahren = "17") AS "Gastric Plication",
        SUM(op.OP1OPVerfahren = "18") AS "Stomaphyx",
        SUM(op.OP1OPVerfahren = "19") AS "Omega Loop Bypass",
        SUM(op.OP1OPVerfahren = "20") AS "Omega Loop Bypass banded",
        SUM(op.OP1OPVerfahren = "21") AS "Long Limb Bypass",
        SUM(op.OP1OPVerfahren = "22") AS "Distal Very Long Gastric Bypass (Thurnheer)",
        SUM(op.OP1OPVerfahren = "23") AS "Endoscopic Sclerosation",
        SUM(op.OP1OPVerfahren = "24") AS "Swedish Adjustable Gastric Bypass (SAGB)",
        SUM(op.OP1OPVerfahren = "25") AS "Vertical Banded Gastroplasty (VBG)",
        SUM(op.OP1OPVerfahren = "26") AS "Plastic Abdominal Wall Reconstruction (PAWR)",
        SUM(op.OP1OPVerfahren = "27") AS "Inner Hernia Repair",
        SUM(op.OP1OPVerfahren = "28") AS "Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S)",
        SUM(op.OP1OPVerfahren = "99") AS "Anderes OP-Verfahren",
        SUM(op.OP1OPVerfahren LIKE "%") AS "Summe"

        FROM dat_patient p
        LEFT OUTER JOIN dat_optherapie op ON op.patID = p.ID

        WHERE op.OP1Datum BETWEEN "2017-01-01" AND "2020-12-31"
        AND NOT EXISTS (SELECT 1 FROM dat_optherapie op2 WHERE op2.patID = p.ID AND op2.revision > op.revision);

SQL 编辑器中的 结果如下所示（绿色箭头仅总结了所有找到的手术）：

我的 PHP 代码 中的 结果如下所示：

我现在介绍一下每次手术的时间：

op.OP1Dauer 这是进行手术所用的分钟数

我想将 SQL 查询代码扩展为所有汇总手术的最小、最大和平均持续时间，作为三个附加列：

[...] SUM(op.OP1OPVerfahren LIKE "%") AS "Summe", MIN(op.OP1Dauer) AS "MIN", MAX(op.OP1Dauer) AS "MAX", AVG(op.OP1Dauer) AS "AVG" FROM dat_patient p [...]

PHP 应显示如下：

+-------------------------+---------+---------+---------+---------+ | Surgeries performed | Sum | MIN | MAX | AVG | +-------------------------+---------+---------+---------+---------+ | surgery x | 9 | 25 | 348 | 125 | +-------------------------+---------+---------+---------+---------+ | surgery y | 107 | 87 | 244 | 167 | +-------------------------+---------+---------+---------+---------+ | surgery z | 97 | 5 | 57 | 23 | +-------------------------+---------+---------+---------+---------+ | sum | 1019 | not really relevant here | +-------------------------+---------+---------+---------+---------+

当我以下列模式更改 SQL 查询时...

已更改 SQL 查询:

SELECT SUM(op.OP1OPVerfahren = "0") AS "Keine Operation durchgeführt", SUM(op.OP1OPVerfahren = "1") AS "Bioenterics Intragastric Ballon (BIB)", SUM(op.OP1OPVerfahren = "2") AS "Gastric Banding", [... abreviated because the same as in first SQL query ...] SUM(op.OP1OPVerfahren = "27") AS "Inner Hernia Repair", SUM(op.OP1OPVerfahren = "28") AS "Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S)", SUM(op.OP1OPVerfahren = "99") AS "Anderes OP-Verfahren", SUM(op.OP1OPVerfahren LIKE "%") AS "Summe", MIN(op.OP1Dauer), MAX(op.OP1Dauer), AVG(op.OP1Dauer) FROM dat_optherapie op LEFT OUTER JOIN dat_patient p ON op.patID = p.ID WHERE op.OP1Datum BETWEEN "2017-01-01" AND "2020-12-31" AND NOT EXISTS (SELECT 1 FROM dat_optherapie op2 WHERE op2.patID = p.ID AND op2.revision > op.revision) GROUP BY op.OP1OPVerfahren

...，我在 SQL 编辑器 中看到以下 结果：

基本上，这是显示（受控）正确值的内容（请不要因为“-1”而责备我，这些是我的实验数据，“-1”已被遗留用于测试目的。 ..).此外，我已将由 dat_optherapie 加入的主要 table dat_patient 更改为相反的方式（即使查询中未在此处显示，我需要与患者的关联 table 由于内部区分哪些患者是真实的，哪些仅用于测试目的）。

在 PHP 代码中，我按以下方式显示结果：

<?php [... Preceding PHP code for exporting the results as CSV / XLSX ...] function getOP1OPVerfahrenStratification() { global $oDatabase; $qQuery = ' [... SQL query ...] '; $rQuery = mysql_query($qQuery, $oDatabase); $result = array("count" => mysql_num_rows($rQuery ), "result" => $rQuery); return $result; } function writeOP1OPVerfahrenStratification($rQuery) { if (!$rQuery) { $message = ' '; $message .= 'Ungültige Abfrage: ' . mysql_error() . ' '; $message .= 'Gesamte Abfrage: ' . $qQuery . ' '; echo $message; } if (mysql_num_rows($rQuery) == 0) { $message = ' '; $message .= 'Zu diesem Zeitraum liegen noch keine Daten vor. ' . mysql_error() . ' '; echo $message; } while ($row = mysql_fetch_assoc($rQuery)) { echo '<tr>'; echo '<td>'; echo "Keine Operation durchgeführt"; echo '</td>'; echo '<td class="data_table_r">'; echo $row['Keine Operation durchgeführt']; echo '</td>'; //echo '<td>'; //echo "MIN"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['MIN']; echo '</td>'; //echo '<td>'; //echo "MAX"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['MAX']; echo '</td>'; //echo '<td>'; //echo "AVG"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['AVG']; echo '</td>'; echo '</tr>'; echo '</tr>'; echo '<tr>'; echo '<td>'; echo "Bioenterics Intragastric Ballon (BIB)"; echo '</td>'; echo '<td class="data_table_r">'; echo $row['Bioenterics Intragastric Ballon (BIB)']; echo '</td>'; //echo '<td>'; //echo "MIN"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['MIN']; echo '</td>'; //echo '<td>'; //echo "MAX"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['MAX']; echo '</td>'; //echo '<td>'; //echo "AVG"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['AVG']; echo '</td>'; echo '</tr>'; echo '</tr>'; [...] echo '<tr>'; echo '<td>'; echo "Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S)"; echo '</td>'; echo '<td class="data_table_r">'; echo $row['Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S)']; echo '</td>'; //echo '<td>'; //echo "MIN"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['MIN']; echo '</td>'; //echo '<td>'; //echo "MAX"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['MAX']; echo '</td>'; //echo '<td>'; //echo "AVG"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['AVG']; echo '</td>'; echo '</tr>'; echo '</tr>'; echo '<tr>'; echo '<td>'; echo "Anderes OP-Verfahren"; echo '</td>'; echo '<td class="data_table_r">'; echo $row['Anderes OP-Verfahren']; echo '</td>'; //echo '<td>'; //echo "MIN"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['MIN']; echo '</td>'; //echo '<td>'; //echo "MAX"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['MAX']; echo '</td>'; //echo '<td>'; //echo "AVG"; //echo '</td>'; echo '<td class="data_table_r">'; echo $row['AVG']; echo '</td>'; echo '</tr>'; echo '</tr>'; echo '<tr>'; echo '<td style="font-size: 30px;">'; echo "Summe"; echo '</td>'; echo '<td class="data_table_r" style="font-size: 30px;">'; echo $row['Summe']; echo '</td>'; echo '</tr>'; } } $beginn = microtime(true); $ListResult = getOP1OPVerfahrenStratification(); $dauer = microtime(true) - $beginn; $ListCount = $ListResult['count']; ?> [... HTML, CSS, JavaScript files - begin ...] <?php writeOP1OPVerfahrenStratification($ListResult['result']); mysql_free_result($result); ?> [... HTML, CSS, JavaScript files - end ...]

您可能会发现所有这些都是根据情况构建的，我部分同意 - 尽管如此，我的问题不是关于美化。

沿着这条路或者已经在我的 SQL 查询中我修改了代码以便在 PHP 中正确显示。 我看到我得到了显示只有一个且始终相同的单值三元组 MIN、Max 和 AVG：

如果有人能告诉我我的错误在哪里，我将不胜感激。 PHP table 显示出现在许多 echo ... 命令中，我想我应该以我不理解的正确方式将 MIN、MAX 和 AVG 命令集成到那里到目前为止。

Answer 1

自己的解决方案：

当然，上面提到的一个 SUM(...) 一个接一个的聚集是行不通的，因为这会在显示相关 MIN、MAX 的行中构建一个 SQL 查询结果集数组和手术类型（不是总和！）的 AVG 持续时间，但使用 PHP.

无法显示

得到的SQL查询代码是这样的：

    SELECT
    CASE
        WHEN op.OP1OPVerfahren = 0 THEN "keines"
        WHEN op.OP1OPVerfahren = 1 THEN "Bioenterics Intragastric Ballon (BIB)"
        WHEN op.OP1OPVerfahren = 2 THEN "Gastric Banding"
        WHEN op.OP1OPVerfahren = 3 THEN "Roux-en-Y Gastric Bypass"
        WHEN op.OP1OPVerfahren = 4 THEN "Roux-en-Y Gastric Bypass banded"
        WHEN op.OP1OPVerfahren = 5 THEN "Scopinaro"
        WHEN op.OP1OPVerfahren = 6 THEN "Duodenal Switch (DS)"
        WHEN op.OP1OPVerfahren = 7 THEN "Sleeve Resection"
        WHEN op.OP1OPVerfahren = 8 THEN "Gastric Pacemaker"
        WHEN op.OP1OPVerfahren = 9 THEN "Billroth II"
        WHEN op.OP1OPVerfahren = 10 THEN "Gastroplasty"
        WHEN op.OP1OPVerfahren = 11 THEN "Fobi / Capella Bypass"
        WHEN op.OP1OPVerfahren = 12 THEN "Larrad"
        WHEN op.OP1OPVerfahren = 13 THEN "Santoro"
        WHEN op.OP1OPVerfahren = 14 THEN "DJB"
        WHEN op.OP1OPVerfahren = 15 THEN "TOGA"
        WHEN op.OP1OPVerfahren = 16 THEN "Endobarrier"
        WHEN op.OP1OPVerfahren = 17 THEN "Gastric Plication"
        WHEN op.OP1OPVerfahren = 18 THEN "Stomaphyx"
        WHEN op.OP1OPVerfahren = 19 THEN "Omega Loop Bypass"
        WHEN op.OP1OPVerfahren = 20 THEN "Omega Loop Bypass banded"
        WHEN op.OP1OPVerfahren = 21 THEN "Long Limb Bypass"
        WHEN op.OP1OPVerfahren = 22 THEN "Distal Very Long Gastric Bypass (Thurnheer)"
        WHEN op.OP1OPVerfahren = 23 THEN "Endoscopic Sclerosation"
        WHEN op.OP1OPVerfahren = 24 THEN "Swedish Adjustable Gastric Bypass (SAGB)"
        WHEN op.OP1OPVerfahren = 25 THEN "Vertical Banded Gastroplasty (VBG)"
        WHEN op.OP1OPVerfahren = 26 THEN "Plastic Abdominal Wall Reconstruction (PAWR)"
        WHEN op.OP1OPVerfahren = 27 THEN "Inner Hernia Repair"
        WHEN op.OP1OPVerfahren = 28 THEN "Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S)"
        WHEN op.OP1OPVerfahren = 99 THEN "Anderes OP-Verfahren"
    END "OP-Verfahren",

    SUM(op.OP1OPVerfahren LIKE "%") AS "Summe der Eingriffe",

    MIN(op.OP1Dauer) AS "MIN",
    MAX(op.OP1Dauer) AS "MAX",
    ROUND(AVG(op.OP1Dauer),2) AS "AVG"
                    
    FROM dat_patient p
    LEFT OUTER JOIN dat_optherapie op ON op.patID = p.ID
    WHERE op.OP1Datum BETWEEN "1950-01-01" AND "2050-12-31"
    AND op.OP1Dauer != -1
    AND p.Testzwecke = 0
    AND NOT EXISTS (SELECT 1 FROM dat_optherapie op2 WHERE op2.patID = p.ID AND op2.revision > op.revision)

    GROUP BY op.OP1OPVerfahren
    ORDER BY op.OP1OPVerfahren

这将导致以下 PHP table 显示：

最后三列是尚未命名的 MIN、MAX 和 AVG（仍需要根据各自的样式进行改编 sheet）。此外，以这种方式执行操作时，不会自动显示那些没有可计算的最小、最大和平均持续时间的手术程序，因为显然，当执行了 0 次手术时，不可能有任何持续时间。

如何使用 PHP 显示具有 MIN、MAX 和 AVG 值（变量 2）的 SQL SUM 查询结果（变量 1）？

Howto display an SQL SUM query result (variable 1) with MIN, MAX and AVG values (variable 2) using PHP?

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