MySQL“加載本地數據文件”

Question

我遇到了一個問題，我似乎無法克服。 我正在使用LOAD LOCAL DATA INFILE從文本文件（兩列29.12 23.42，例如，用一個空格分隔）中獲取信息。 最初，這只在MySQL中只處理一列，但是我不得不添加一個ID AUTO INCREMENT以便可以使用最新的條目，此外，我現在想將另一列存儲在數據庫中。 這是我的代碼，它可能很明顯，但是我似乎找不到：

<?PHP
$username = "root";
$password = "";
$hostname = "localhost";
$table = "Received_Data";

// Connect to Database and Table

$dbhandle = mysql_connect($hostname, $username, $password)
    or die("Unable to connect to MySQL");
echo "Connected to MySQL<br>";

$selectdatabase = mysql_select_db("IWEMSData",$dbhandle)
    or die("Could not select IWEMSData");
echo "Connected to IWEMSData<br>";

// Clear Current Table and ReCreate

$dt = /*"UPDATE Received_Data SET PotVal = ''";*/ "DROP TABLE Received_Data";
mysql_query($dt);

$ctb = "CREATE TABLE Received_Data
(
Current DECIMAL(30,2) NOT NULL,
PotVal DECIMAL(30,2) NOT NULL, 

ID BIGINT NOT NULL AUTO_INCREMENT,
PRIMARY KEY(ID,PotVal,Current)
)";

mysql_query($ctb, $dbhandle);

echo "Received_Data Table has been created";

// Text File to read in

$Textfile = 'IWEMSData.txt';

mysql_query('

LOAD DATA LOCAL INFILE "IWEMSData.txt" 
REPLACE INTO TABLE Received_Data 
FIELDS TERMINATED BY "" 
LINES TERMINATED BY "\\r\\n
(PotVal, Current)
";')

or die('Error Loading Data File.<br>' . mysql_error());

// Close Database connection when complete

mysql_close($dbhandle);
?>

所以我想要的是列1是ID，該ID在每次輸入時都會自動增加。 第二行是PotVal，第三行是Current。 然后，我只想存儲在第二列和第三列中。

我得到的問題是ID和Current顯示的值不正確，我似乎只能得到一行。

提前致謝！

Answer 1

mysql_query('
LOAD DATA LOCAL INFILE "IWEMSData.txt" 
REPLACE INTO TABLE Received_Data 
FIELDS TERMINATED BY "" /*<- terminated by nothing? Shouldn't there be a space in it?*/
LINES TERMINATED BY "\\r\\n /*<- the closing " is missing*/
(PotVal, Current)
";') /*<- ah, here's the missing " What does it do here?*/

像這樣寫：

mysql_query('
LOAD DATA LOCAL INFILE "IWEMSData.txt" 
REPLACE INTO TABLE Received_Data 
FIELDS TERMINATED BY " " 
LINES TERMINATED BY "\\r\\n"
(PotVal, Current)
;')