php - 使用 DB2 查询加入 mysql 数据进行插入

Question

我试图在 php 中获取一个脚本，该脚本使用 sql 从 DB2 获取查询，然后通过将其等同于另一个连接中的 mysql 表中的数据来使用该结果集，并将基于该结果的结果插入到另一个连接中.

基本上，我的 db2 查询返回几个字段，这些字段需要确定我的 SQL 中的表的 ID

下面我举个例子:

我从这里选择:DB2 查询结果

Dealer | Style | Frame | Cover | Color | Placements | shipdate
---------------------------------------------------------------
123        1      1234    12       1         2         20180219
123        2      1235    12       1         2         20180219
123        3      1236    12       1         2         20180219

从某种意义上说，我需要将前面的数据加入到后面的数据中SKU表(db2.style = sku.groupID, db2.frame = sku.frame, db2.cover = sku.cover, and db2.color = sku.color)以获得正确的ID

ID | Frame | GroupID | cover | color 
------------------------------------
15    1234      1        12      1
16    1235      2        12      1
17    1236      3        12      1

然后在下面，我需要插入先前确定的 ID，以及来自原始 DB2 查询的一些数据(将 style 插入 groupID，将 dealer 插入 dealerID，将 shipdate 插入 startdate，将 placements 插入 placements)

INSERT 将导致:(skuplacement 表)

sku_id | groupID | dealerID | startDate | expirationDate          | placements
------------------------------------------------------------------------------
15          1       123        20180226    (shipdate + 127 days)       2
16          2       123        20180226    (shipdate + 127 days)       2
17          3       123        20180226    (shipdate + 127 days)       2

我希望这是有道理的。

我现在已经包括了我的完整脚本，但是我的 MYSQL 的 INSERT/SELECT/JOIN 丢失了。我不确定现在该怎么做，但我的两个连接都在工作。这只是创建正确查询的问题。

我很乐意回答任何问题以消除困惑。

            <?php


            //Establilsh MySql Connection
            $mysqlConn = new mysqli($mysqlServer, $mysqlUser, $mysqlPass);

            //Check MySQL connection
            if($mysqlConn->connect_error){
              die("Connection Failed: " .$mysqlConn->connect_error);
            }
            echo "Connected Succssfully to Mysql";

            //Establish DB2 connection
            $DB2Conn = odbc_connect();

            //Check DB2 Connection
            if(!$DB2Conn){
              die("Could not connect");
            }else{
                echo"Connected to DB2";
            }



            $plcQueryDB2 = "

                   select
                        xcstno as dealer,
                        p.style as Style,
                        trim(p.framfmt) as Frame,
                        p.cover1 as Cover,
                        p.color1 as Color,
                        sum(skunoc) as placements,
                        p.extd1d as shipdate
                    from pieces p
                    where left(shipdate, 4) >= '2016'
                    group by xcstno, xslsno, sup, f.style, f.grpnam, f.framfmt, f.cover1, f.color1, f.coldss,a.extd1d
                    order by left(shipdate, 4) ASC, REP
                ";

            $prep = odbc_prepare($DB2Conn, $plcQueryDB2);
            $exec = odbc_execute($prep);

            $result = odbc_exec($DB2Conn, $plcQueryDB2);

            if(!$prep){
                die("Could Not Run Query");
            }else{
                echo "DB2 Query Successful";
            }


            while(odbc_fetch_row($result)){
                     for($i=1;$i<=odbc_num_fields($result);$i++){
                    echo "Result is ".odbc_result($result,$i);
                }
            }


            /*Need to get an INSERT created here*/

            $InsertSKUS = "

                    INSERT INTO skuPlacement
                    values (?,?,?,?,?,?)     
            ";

            /* This is my problem. I need to select from another table called skus and insert into skuPlacement based on equating fields from my previous DB2 query and the skus table*/


            ////*CLOSE CONNECTIONS*////


            if (mysqli_close($mysqlConn)){
                echo "MySQL Closed";
            }

            //$CloseDB2 =  odbc_close( $DB2Conn);

            if(odbc_close( $DB2Conn)){
                echo "DB2 Closed";
            }





            ?>

Answer 1

考虑将您的 DB2 查询结果保存到 csv 文件。然后使用 LOAD DATA INFILE 将 csv 文件导入 MySQL (快速批量工具)并在 MySQL 中运行所需的连接追加查询:

DB2 查询 CSV

try {
    $DB2Conn = odbc_connect();

    $plcQueryDB2 = "...";
    $prep = odbc_prepare($DB2Conn, $plcQueryDB2);
    $exec = odbc_execute($prep);
    $result = odbc_exec($DB2Conn, $plcQueryDB2);
}
catch(Exception $e) {  
    echo $e->getMessage();  
} 

// Writing column headers
$columns = array('Dealer', 'Style', 'Frame', 'Cover', 'Color', 'Placements', 'shipdate');
$fs = fopen('DB2_Query.csv', 'w');
fputcsv($fs, $columns);      
fclose($fs);

// Writing data rows
while($arr = odbc_fetch_array($result)) {
    $fs = fopen('DB2_Query.csv', 'a');
      fputcsv($fs, $arr);
    fclose($fs);
}

odbc_close($DB2Conn);
$DB2Conn = null;

MySQL 查询(在 PHP 或控制台中单独运行)

$mysqlConn->query("CREATE TABLE IF NOT EXISTS db2Temp (
                       dealer INTEGER,
                       style INTEGER,
                       frame INTEGER,
                       cover INTEGER,
                       color INTEGER,
                       placements INTEGER,
                       shipdate DATE
                  )");

$mysqlConn->query("DELETE FROM db2Temp");

$mysqlConn->query("LOAD DATA LOCAL INFILE /path/to/DB2Query.csv
                   INTO TABLE db2temp
                   FIELDS TERMINATED BY ','
                   OPTIONALLY ENCLOSED BY '\"'
                   LINES TERMINATED BY '\n'
                   IGNORE 1 LINES");

$mysqlConn->query("INSERT INTO skuPlacement (sku_id, groupID, dealerID, startDate,
                                             expirationDate, placements)
                   SELECT sku.ID, sku.Group_ID, db2.dealer, db2.shipDate,
                          DATE_ADD(
                               DATE_FORMAT(CONVERT(db2.shipDate, CHAR(8)), '%Y-%m-%d'), 
                               INTERVAL 127 DAY) as expirationDate,
                          db2.placements
                   FROM sku
                   INNER JOIN db2temp db2
                   ON db2.style = sku.groupID
                   AND db2.frame = sku.frame
                   AND db2.cover = sku.cover
                   AND db2.color = sku.color
                   WHERE NOT EXISTS                  
                      (SELECT 1 FROM skuPlacement p
                       WHERE sku.ID = p.sku_ID)");