我有一个运行和插入的脚本，但它不会更新，至少不会在初始批处理中更新。如果我运行脚本，第一个和主要的SELECT查询将获得大约800条记录。它插入并执行我下面的逻辑（脚本底部有多个if，elseif和for循环）但是我需要它来处理初始选择中的每个单独的记录。
所以：选择所有记录，对于第一个记录，在目的地表上执行选择以查看该经销商是否存在sku。如果没有，请插入，如果确实如此，则更新。
问题是，当我为初始数据移植运行它时，目标表是空的，因此它不会检查任何内容。我在代码中添加了一个foreach来说“对于每条记录，执行目标表上的选择/检查，然后执行逻辑以确定是否插入或更新”
我也在下面添加了一个小提琴，但使用这些值来选择：
(12345, 133, 1234, '2018-02-02', 10, 10),
(12345, 133, 1235, '2018-02-02', 10, 10),
(12345, 133, 1236, '2018-02-02', 10, 10),
(12346, 133, 1234, '2018-03-02', 30, 10);
逻辑是，对于每个经销商，他们应该记录每个sku最多等于他们的商店号码。
根据上面的数据，它应该为第一个sku插入10个记录，为第二个sku插入10个记录，为第3个sku插入10个记录，然后由于第4个sku与第1个相同而日期在expire_date之前，我们将根据超过店面的数量更新该行30次。
我知道逻辑很奇怪。但是这部分有效，我只需要帮助foreach逻辑，以确保我对初始选择中的每条记录执行检查，以便它可以实际确定是否需要更新。
我可以根据需要澄清。
$detailStatCheck = "
SELECT
orderNum,
custNum,
sku,
shipDate,
quantity,
stores
FROM orders
WHERE custNum= 133";
try {
$detailCheck = $DB2conn->prepare($detailStatCheck);
$detailRslt = $detailCheck->execute();
$count2 = $detailCheck->fetch();
print_r($count2);
} catch(PDOException $ex) {
echo "QUERY ONE FAILED!: " .$ex->getMessage();
}
$existingCheck = "
SELECT
sku,
custNum,
expire_date,
quantity
FROM individualProducts
WHERE customer = :customer
AND sku = :sku
";
$updatePlacement = "
UPDATE individualProducts
SET expire_date = DATE_ADD(DATE_FORMAT(CONVERT(current_date(), CHAR(20)), '%Y-%m-%d'),INTERVAL 127 DAY),
quantity = :quantity
";
$insertPlacement = "
INSERT ignore INTO individualProducts (sku, customer, start_date, expire_date, locations, quantity)
VALUES(
:sku,
:customer,
date_add(convert(:SHIPDATE,date), interval 7 day) as start_date,
date_add(convert(:SHIPDATE,date), interval 127 day) as expire_date,
:stores,
:quantity)
";
$checkExisting = $MysqlConn->prepare($existingCheck);
$insert = $MysqlConn->prepare($insertPlacement);
$update = $MysqlConn->prepare($updatePlacement);
$orders = [];
while ($row2 = $detailCheck->fetch(PDO::FETCH_ASSOC)) {
$orders[] = $row2;
foreach($orders as $order){
$values = [
":customer" => $row2["customer"],
":shipDate" => $row2["shipDate"],
":stores" => $row2["stores"],
":quantity" => $row2["quantity"],
":sku" => $row2["sku"],
];
$existingRslt = $checkExisting->execute($values);
$count3 = $checkExisting->fetch(PDO::FETCH_ASSOC);
//if no existing records, insert. If quantity is greater than stores, insert records to equal store number. If quantity is less than stores, insert records to equal quantity
if(empty($count3)){
print_r("Inserting");
if($row2["quantity"] > $row2["stores"]){
for($i=0; $i<$row2["stores"]; $i++){
try{
$insertRslt = $insert->execute($values);
}catch(PDOException $ex){
echo "QUERY THREE FAILED!!!: " . $ex->getMessage();
}
}
}elseif($row2["quantity"] < $row2["stores"]){
for($i=0; $i<$row2["quantity"]; $i++){
try{
$insertRslt = $insert->execute($values);
}catch(PDOException $ex){
echo "QUERY THREE FAILED!!!: " . $ex->getMessage();
}
}
}
}elseif(!empty($count3) && curdate() < $count3['expire_date']){
print_r("Updating");
if($row2["QUANTITY"] > $row2["STORES"]){
for($i=0; $i<$row2['STORES']; $i++){
try{
$updateRslt = $update->execute($values3);
}catch(PDOException $ex){
echo "QUERY FIVE FAILED!!!: " . $ex->getMessage();
}
}
}elseif($row2["QUANTITY"] < $row2["STORES"]){
for($i=0; $i<$row2['QUANTITY']; $i++){
try{
$updateRslt = $update->execute($values3);
}catch(PDOException $ex){
echo "QUERY FIVE FAILED!!!: " . $ex->getMessage();
}
}
}
}else{
print_r("Inserting");
if($row2["quantity"] > $row2["stores"]){
for($i=0; $i<$row2["stores"]; $i++){
try{
$insertRslt = $insert->execute($values);
}catch(PDOException $ex){
echo "QUERY THREE FAILED!!!: " . $ex->getMessage();
}
}
}elseif($row2["quantity"] < $row2["stores"]){
for($i=0; $i<$row2["quantity"]; $i++){
try{
$insertRslt = $insert->execute($values);
}catch(PDOException $ex){
echo "QUERY THREE FAILED!!!: " . $ex->getMessage();
}
}
}
}
$MysqlConn = null;
这是小提琴：http://sqlfiddle.com/#!9/0efffb
编辑：
创建表格语法
create table orders(
orderNum int(11),
custNum int(11),
sku int(11),
shipDate DATE,
quantity int(11),
stores int(11)
);
insert into orders
values (12345, 133, 1234, '2018-02-02', 10, 10),
(12345, 134, 1234, '2018-02-02', 10, 10),
(12345, 135, 1234, '2018-02-02', 10, 10),
(12346, 133, 1234, '2018-03-02', 30, 10);
create table individualProducts(
sku int(11),
customer int(11),
start_date DATE,
expire_date DATE,
locations int(11),
quantity int(11)
);
答案 0 :(得分：2)
可能您知道，但是，如果您对错误处理更感兴趣，可以阅读this（一般）和this（针对PDO）文章。
仍然很难理解更新阶段。我只是希望，你至少可以从我的代码中获取一些想法。别接受我的回答。我发布它只是为了帮助你一点。如果你愿意，可以问我任何事情。
<?php
require 'connections.php';
/*
* ====================
* Get the orders list.
* ====================
*/
$sql = 'SELECT
orderNum,
custNum,
sku,
shipDate,
quantity,
stores
FROM orders
WHERE custNum = :custNum';
$ordersStatement = $DB2conn->prepare($sql);
$ordersStatement->execute([
':custNum' => 133,
]);
$orders = $ordersStatement->fetchAll(PDO::FETCH_ASSOC);
/*
* ======================================================
* Prepare the sql for selecting the individual products.
* ======================================================
*/
$sql = 'SELECT
id,
expire_date,
quantity
FROM individualProducts
WHERE
sku = :sku
AND customer = :customer
ORDER BY id DESC';
$productsStatement = $MysqlConn->prepare($sql);
/*
* ====================================================
* Prepare the sql for inserting an individual product.
* ====================================================
*/
$sql = 'INSERT INTO individualProducts (
sku,
customer,
start_date,
expire_date,
locations,
quantity
) VALUES (
:sku,
:customer,
DATE_ADD(CONVERT(:shipDate, date), INTERVAL 7 DAY),
DATE_ADD(CONVERT(:shipDate, date), INTERVAL 127 DAY),
:locations,
:quantity
)';
$insertProductStatement = $MysqlConn->prepare($sql);
/*
* ===================================================
* Prepare the sql for updating an individual product.
* ===================================================
*/
$sql = 'UPDATE individualProducts
SET
expire_date = DATE_ADD(DATE_FORMAT(CONVERT(current_date(), CHAR(20)), "%Y-%m-%d"),INTERVAL 129 DAY),
quantity = :quantity
WHERE id = :id';
$updateProductStatement = $MysqlConn->prepare($sql);
/*
* ==================================
* Update/insert individual products.
* ==================================
*/
foreach ($orders as $orderItem) {
$orderItemCustomer = $orderItem['custNum'];
$orderItemSku = $orderItem['sku'];
$orderItemShipDate = $orderItem['shipDate'];
$orderItemQuantity = $orderItem['quantity'];
$orderItemStores = $orderItem['stores'];
/*
* =================================
* Get products by sku and customer.
* =================================
*/
$productsStatement->execute([
':sku' => $orderItemSku,
':customer' => $orderItemCustomer,
]);
$products = $productsStatement->fetchAll(PDO::FETCH_ASSOC);
if (!$products) { // No individual products found.
// How many products should be inserted?
$numberOfProductsToInsert = ($orderItemQuantity >= $orderItemStores) ? $orderItemStores : $orderItemQuantity;
// Insert the product $numberOfProductsToInsert times.
for ($i = 0; $i < $numberOfProductsToInsert; $i++) {
$insertProductStatement->execute([
':sku' => $orderItemSku,
':customer' => $orderItemCustomer,
':shipDate' => $orderItemShipDate,
':locations' => $orderItemStores,
':quantity' => $orderItemQuantity,
]);
}
} else { // Individual products found.
$numberOfProducts = count($products);
$numberOfUpdatedProducts = 0;
$currentDate = date('Y-m-d', time());
// How many products should be updated?
$numberOfProductsToUpdate = ($orderItemQuantity >= $orderItemStores) ? $orderItemStores : $orderItemQuantity;
$numberOfProductsToUpdate = ($numberOfProductsToUpdate >= $numberOfProducts) ? $numberOfProducts : $numberOfProductsToUpdate;
// Update each product (maximal $numberOfProducts).
foreach ($products as $product) {
if ($numberOfUpdatedProducts == $numberOfProductsToUpdate) {
break;
}
$productId = $product['id'];
$productExpireDate = $product['expire_date'];
if ($currentDate < $productExpireDate) {
$updateProductStatement->execute([
':quantity' => $orderItemQuantity,
':id' => $productId,
]);
$numberOfUpdatedProducts++;
}
}
}
}
<?php
// Db configs.
define('HOST', 'localhost');
define('PORT', 3306);
define('DATABASE', 'tests');
define('USERNAME', 'root');
define('PASSWORD', 'root');
define('CHARSET', 'utf8');
error_reporting(E_ALL);
ini_set('display_errors', 1); /* SET IT TO 0 ON A LIVE SERVER! */
/*
* Create a DB2 connection.
*/
$DB2conn = new PDO(
sprintf('mysql:host=%s;port=%s;dbname=%s;charset=%s', HOST, PORT, DATABASE, CHARSET)
, USERNAME
, PASSWORD
, [
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => TRUE,
PDO::ATTR_PERSISTENT => FALSE,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
]
);
/*
* Create a MySQL connection.
*/
$MysqlConn = new PDO(
sprintf('mysql:host=%s;port=%s;dbname=%s;charset=%s', HOST, PORT, DATABASE, CHARSET)
, USERNAME
, PASSWORD
, [
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_EMULATE_PREPARES => TRUE,
PDO::ATTR_PERSISTENT => FALSE,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
]
);
CREATE TABLE `orders` (
`orderNum` int(11) DEFAULT NULL,
`custNum` int(11) DEFAULT NULL,
`sku` int(11) DEFAULT NULL,
`shipDate` date DEFAULT NULL,
`quantity` int(11) DEFAULT NULL,
`stores` int(11) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `individualProducts` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`sku` int(11) DEFAULT NULL,
`customer` int(11) DEFAULT NULL,
`start_date` date DEFAULT NULL,
`expire_date` date DEFAULT NULL,
`locations` int(11) DEFAULT NULL,
`quantity` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;