Question

我正在尝试使用LOAD DATA INFILE方法（csv数据到数据库）保存其中一列的递增值。我没有尝试任何工作。没有额外的serial_no字段，所有导入都很好，如果我将一个硬编码值设置为serial_no，那也可以。只是不能让它为每条记录增加1的数值。

-

$loadsqlfiletodb = "SET @a:=".$serial_no_max_new.";
        LOAD DATA LOCAL INFILE '".$target_file."'
        INTO TABLE ".DB_NAME2.".list_data
        FIELDS TERMINATED BY ','
        OPTIONALLY ENCLOSED BY '\"' 
        LINES TERMINATED BY '\n'
        IGNORE 1 LINES 
        (first,last,address,city,state,zip,company,tracking_number,vin,year,make,model,rough,average,clean,misc1,misc2,misc3,misc4,misc5,misc6,misc7,misc8,misc9,misc10,list,email,phone,image_name,image_path)
        SET cid = ".$campaignid.",
            jid = ".$jobid.",
            serial_no = @a:=@a+1 ";

        mysql_query($loadsqlfiletodb) or die(mysql_error());

-

$loadsqlfiletodb = "
        SET @a:='".$serial_no_max_new."'
        LOAD DATA LOCAL INFILE '".$target_file."'
        INTO TABLE ".DB_NAME2.".list_data
        FIELDS TERMINATED BY ','
        OPTIONALLY ENCLOSED BY '\"' 
        LINES TERMINATED BY '\n'
        IGNORE 1 LINES 
        (first,last,address,city,state,zip,company,tracking_number,vin,year,make,model,rough,average,clean,misc1,misc2,misc3,misc4,misc5,misc6,misc7,misc8,misc9,misc10,list,email,phone,image_name,image_path)
        SET cid = ".$campaignid.",
            jid = ".$jobid.",
            serial_no = @a:=@a+1 ";

        mysql_query($loadsqlfiletodb) or die(mysql_error());

-

$loadsqlfiletodb = "LOAD DATA LOCAL INFILE '".$target_file."'
        INTO TABLE ".DB_NAME2.".list_data
        FIELDS TERMINATED BY ','
        OPTIONALLY ENCLOSED BY '\"' 
        LINES TERMINATED BY '\n'
        IGNORE 1 LINES 
        (first,last,address,city,state,zip,company,tracking_number,vin,year,make,model,rough,average,clean,misc1,misc2,misc3,misc4,misc5,misc6,misc7,misc8,misc9,misc10,list,email,phone,image_name,image_path)
        SET cid = ".$campaignid.",
            jid = ".$jobid.",
            serial_no = ".$serial_no_max_new."+1 ";

        mysql_query($loadsqlfiletodb) or die(mysql_error());

-

$loadsqlfiletodb = "LOAD DATA LOCAL INFILE '".$target_file."'
        INTO TABLE ".DB_NAME2.".list_data
        FIELDS TERMINATED BY ','
        OPTIONALLY ENCLOSED BY '\"' 
        LINES TERMINATED BY '\n'
        IGNORE 1 LINES 
        (first,last,address,city,state,zip,company,tracking_number,vin,year,make,model,rough,average,clean,misc1,misc2,misc3,misc4,misc5,misc6,misc7,misc8,misc9,misc10,list,email,phone,image_name,image_path)
        SET cid = ".$campaignid.",
            jid = ".$jobid.",
            serial_no = ".$serial_no_max_new." = ".$serial_no_max_new."+1 ";

        mysql_query($loadsqlfiletodb) or die(mysql_error());

更新

这是完整的事情。序列号始终为9位数。不多也不少。当串口达到999999999时，下一个记录的序列将是000000000.但是，不要担心9到9的零点。此时我正在尝试使用将文件导入数据库的LOAD DATA INFILE方法计算出该列的值增加1。

$query_max = mysql_fetch_array(mysql_query("SELECT id, latest_serial_no FROM ".DB_NAME2.".latest_serial_number WHERE id=1"), MYSQL_ASSOC);
        $serial_no_max = $query_max["latest_serial_no"];
        $serial_no_max_new = $serial_no_max;
        if ($serial_no_max > 999999998) {$serial_no_max_new = 000000000;}

        $padd = "";
        $serial_len = strlen($serial_no_max_new);
        if($serial_len < 9) {
            $serial_len = (9 - $serial_len);
            for($is=0;$is<$serial_len;$is++) {
                $padd .= "0";
            }
            $serial_no_max_new = $padd . $serial_no_max_new;
        }
        $query_serial = trim($serial_no_max_new);
        //echo "q_s: ".$query_serial;

        //Import uploaded file to Database
        //$target_file is where the uploaded file is located

        $loadsqlfiletodb = "SET @a:=".$query_serial.";
        LOAD DATA LOCAL INFILE '".$target_file."'
        INTO TABLE ".DB_NAME2.".list_data
        FIELDS TERMINATED BY ','
        OPTIONALLY ENCLOSED BY '\"' 
        LINES TERMINATED BY '\n'
        IGNORE 1 LINES 
        (first,last,address,city,state,zip,company,tracking_number,vin,year,make,model,rough,average,clean,misc1,misc2,misc3,misc4,misc5,misc6,misc7,misc8,misc9,misc10,list,email,phone,image_name,image_path)
        SET cid = ".$campaignid.",
            jid = ".$jobid.",
            serial_no = @a:=@a+1 ";

        mysql_query($loadsqlfiletodb) or die(mysql_error());

Answer 1

也许是这样的：

 /*1 get last serial number.

 open csv file.
 foreach row in csv file:
    increment serial number.
    if max number
       set serial number to 0.
    add new field to csv row

 close csv file

 insert csv to database*/


    $query_max = mysql_fetch_array(mysql_query("SELECT id, latest_serial_no FROM ".DB_NAME2.".latest_serial_number WHERE id=1"), MYSQL_ASSOC);
    $serial_no_max = $query_max["latest_serial_no"];
    $serial_no_max_new = $serial_no_max;
    if ($serial_no_max > 999999998) {$serial_no_max_new = 000000000;}

    $padd = "";
    $serial_len = strlen($serial_no_max_new);
    if($serial_len < 9) {
        $serial_len = (9 - $serial_len);
        for($is=0;$is<$serial_len;$is++) {
            $padd .= "0";
        }
        $serial_no_max_new = $padd . $serial_no_max_new;
    }
    $query_serial = trim($serial_no_max_new);
    //echo "q_s: ".$query_serial;

    // Add serail number to csv code
    $csv = fopen($target_file, "r");
    $tmp_csv_addr = $target_file . "2";
    $tmp_csv = fopen($tmp_csv_addr, "a");
    while (($data = fgetcsv($csv, 0, ",")) !== FALSE) {
        $data[] = $query_serial;
        fputcsv($tmp_csv, $data, ",");
    }
    fclose($csv);
    fclose($tmp_csv);

    // Insert into database
    $loadsqlfiletodb = "LOAD DATA LOCAL INFILE '".$tmp_csv_addr."'
    INTO TABLE ".DB_NAME2.".list_data
    FIELDS TERMINATED BY ','
    OPTIONALLY ENCLOSED BY '\"' 
    LINES TERMINATED BY '\n'
    IGNORE 1 LINES 
    (first,last,address,city,state,zip,company,tracking_number,vin,year,make,model,rough,average,clean,misc1,misc2,misc3,misc4,misc5,misc6,misc7,misc8,misc9,misc10,list,email,phone,image_name,image_path,serial_no)
    SET cid = ".$campaignid.",
        jid = ".$jobid;

    mysql_query($loadsqlfiletodb) or die(mysql_error());

    unlink($tmp_csv);

Answer 2

使用auto_incement列（id）将数据加载到表中。

之后运行更新：

UPDATE list_data
SET serail_no = MOD(id, 1000000000)

如何使用php mysql LOAD DATA INFILE为每条记录增加1的变量值

2 个答案: