如何使用 PHP SQL 解析器将数组值转换为 MySQL 查询？
How to convert array values to MySQL query using PHP SQL Parser?
我正在使用 PHP SQL PARSER
我的代码
<?php
require_once dirname(__FILE__) . '/../src/PHPSQLParser.php';
$sql = 'SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate
FROM Orders
LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID where
Customers.CustomerName = "Siddhu"';
$sql = strtolower($sql);
echo $sql . "\n";
$parser = new PHPSQLParser($sql, true);
echo "<pre>";
print_r($parser->parsed);
?>
我得到如下数组的输出
Array (
[SELECT] => Array
(
[0] => Array
(
[expr_type] => colref
[alias] =>
[base_expr] => orders.orderid
[no_quotes] => orders.orderid
[sub_tree] =>
[delim] => ,
[position] => 7
)
[1] => Array
(
[expr_type] => colref
[alias] =>
[base_expr] => customers.customername
[no_quotes] => customers.customername
[sub_tree] =>
[delim] => ,
[position] => 23
)
[2] => Array
(
[expr_type] => colref
[alias] =>
[base_expr] => orders.orderdate
[no_quotes] => orders.orderdate
[sub_tree] =>
[delim] =>
[position] => 47
)
)
[FROM] => Array
(
[0] => Array
(
[expr_type] => table
[table] => orders
[no_quotes] => orders
[alias] =>
[join_type] => JOIN
[ref_type] =>
[ref_clause] =>
[base_expr] => orders
[sub_tree] =>
[position] => 70
)
[1] => Array
(
[expr_type] => table
[table] => customers
[no_quotes] => customers
[alias] =>
[join_type] => LEFT
[ref_type] => ON
[ref_clause] => Array
(
[0] => Array
(
[expr_type] => colref
[base_expr] => orders.customerid
[no_quotes] => orders.customerid
[sub_tree] =>
[position] => 101
)
[1] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 118
)
[2] => Array
(
[expr_type] => colref
[base_expr] => customers.customerid
[no_quotes] => customers.customerid
[sub_tree] =>
[position] => 119
)
)
[base_expr] => customers on orders.customerid=customers.customerid
[sub_tree] =>
[position] => 88
)
)
[WHERE] => Array
(
[0] => Array
(
[expr_type] => colref
[base_expr] => customers.customername
[no_quotes] => customers.customername
[sub_tree] =>
[position] => 146
)
[1] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 169
)
[2] => Array
(
[expr_type] => const
[base_expr] => "siddhu"
[sub_tree] =>
[position] => 171
)
)
)
现在我想使用这个数组生成查询。我为什么要这样做，稍后我会向这个数组添加额外的参数。就像我在 WHERE 子句或 Table
中传递附加条件一样
例如：
上一个查询
$sql = 'SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate
FROM Orders
LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID where
Customers.CustomerName = "Siddhu"';
现在我想在 where 条件 Customers.CustomerID = "123" and status = "Active" and created_by = 1;[=19= 之后在 where 子句中传递另外两个条件]
所以我的最终查询是这样的
$sql = 'SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate
FROM Orders
LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID where
Customers.CustomerName = "Siddhu" AND Customers.CustomerID = "123" and status = "Active" and created_by = 1;
那么如何实现呢，或者PHPSQLPARSER中是否有函数使用这个数组来生成查询？感谢您的提前和抱歉任何语法错误
老实说，我承认我没能完全理解这个问题。但试图从我能够理解的内容中回答它。
我相信您想使用第一个查询的输出并生成另一个带有附加 where 子句的查询。您可能只能通过在原始查询本身中使用 CONCAT 的简单附加 select 子句来做到这一点。将您的硬编码原始查询与所需列连接起来，并生成动态 SQL 作为附加输出列。
SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate,
CONCAT("SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID WHERE Customers.CustomerName = \"Siddhu\"", " AND Customers.CustomerID = \"", Customers.CustomerID, " and status = \"Active\" and created_by = 1;")
FROM Orders
LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID
WHERE Customers.CustomerName = "Siddhu"
如果状态字段也来自其中一个表，那么您可以中断 CONCAT 函数并改用该列名。希望能帮助到你。
要从数组构建查询，PHPSQLParser 有一个 creator 方法，
来自此处的文档：Parser manual
There are two ways in which you can create statements from parser output
Use the constructor
The constructor simply calls the create() method on the provided parser tree output for convenience.
$parser = new PHPSQLParser('select 1');
$creator = new PHPSQLCreator($parser->parsed);
echo $creator->created;
Use the create() method
$parser = new PHPSQLParser('select 2');
$creator = new PHPSQLCreator();
echo $creator->create($parser->parsed);
/* this is okay, the SQL is saved in the _created_ property. */
/* get the SQL statement for the last parsed statement */
$save = $creator->created;
当然因为$parser->parsed是一个array，你可以传递你自己的数组
echo $creator->create($myArray);
要向数组添加条件，可以将其添加到WHERE条件数组
每个条件都有 3 个数组定义 colref（列名）、operator（以及 .. 运算符）和 const（值）
棘手的部分是 WHERE 的子数组中的 position，因为您需要指定要插入这三个中的每一个的确切位置，因此基于 WHERE 在您提供的示例中，您可以看到运算符 = 的位置是 169 （从 0 开始）
检查此工具以查看 character position in a string（从 1 开始）。
并基于此Complexe example
你最终的 WHERE 数组应该是这样的（不过我不确定你是否需要 [no_quotes] 键）：
[WHERE] => Array
(
[0] => Array
(
[expr_type] => colref
[base_expr] => customers.customername
[no_quotes] => customers.customername
[sub_tree] =>
[position] => 146
)
[1] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 169
)
[2] => Array
(
[expr_type] => const
[base_expr] => "siddhu"
[sub_tree] =>
[position] => 171
)
// adding other conditions
[3] => Array
(
[expr_type] => operator
[base_expr] => and
[sub_tree] =>
[position] => 180
)
[4] => Array
(
[expr_type] => colref
[base_expr] => customers.CustomerID
[no_quotes] => customers.CustomerID
[position] => 184
)
[5] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 205
)
[6] => Array
(
[expr_type] => const
[base_expr] => "123"
[sub_tree] =>
[position] => 207
)
[7] => Array
(
[expr_type] => operator
[base_expr] => and
[sub_tree] =>
[position] => 213
)
[8] => Array
(
[expr_type] => colref
[base_expr] => status
[no_quotes] => status
[position] => 217
)
[9] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 224
)
[10] => Array
(
[expr_type] => const
[base_expr] => "Active"
[sub_tree] =>
[position] => 226
)
[11] => Array
(
[expr_type] => operator
[base_expr] => and
[sub_tree] =>
[position] => 235
)
[12] => Array
(
[expr_type] => colref
[base_expr] => created_by
[no_quotes] => created_by
[position] => 239
)
[13] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 250
)
[14] => Array
(
[expr_type] => const
[base_expr] => 1
[sub_tree] =>
[position] => 252
)
)
PS ：我在您提供的多个条件下使用了查询，并取消了缩进和换行符以找出位置，如果您可以使用这些值没有所需的字符串输出，因为这应该只是一个示例。
我希望这对您有所帮助，或者至少给您一个想法，祝您好运。
我正在使用 PHP SQL PARSER
我的代码
<?php
require_once dirname(__FILE__) . '/../src/PHPSQLParser.php';
$sql = 'SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate
FROM Orders
LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID where
Customers.CustomerName = "Siddhu"';
$sql = strtolower($sql);
echo $sql . "\n";
$parser = new PHPSQLParser($sql, true);
echo "<pre>";
print_r($parser->parsed);
?>
我得到如下数组的输出
Array (
[SELECT] => Array
(
[0] => Array
(
[expr_type] => colref
[alias] =>
[base_expr] => orders.orderid
[no_quotes] => orders.orderid
[sub_tree] =>
[delim] => ,
[position] => 7
)
[1] => Array
(
[expr_type] => colref
[alias] =>
[base_expr] => customers.customername
[no_quotes] => customers.customername
[sub_tree] =>
[delim] => ,
[position] => 23
)
[2] => Array
(
[expr_type] => colref
[alias] =>
[base_expr] => orders.orderdate
[no_quotes] => orders.orderdate
[sub_tree] =>
[delim] =>
[position] => 47
)
)
[FROM] => Array
(
[0] => Array
(
[expr_type] => table
[table] => orders
[no_quotes] => orders
[alias] =>
[join_type] => JOIN
[ref_type] =>
[ref_clause] =>
[base_expr] => orders
[sub_tree] =>
[position] => 70
)
[1] => Array
(
[expr_type] => table
[table] => customers
[no_quotes] => customers
[alias] =>
[join_type] => LEFT
[ref_type] => ON
[ref_clause] => Array
(
[0] => Array
(
[expr_type] => colref
[base_expr] => orders.customerid
[no_quotes] => orders.customerid
[sub_tree] =>
[position] => 101
)
[1] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 118
)
[2] => Array
(
[expr_type] => colref
[base_expr] => customers.customerid
[no_quotes] => customers.customerid
[sub_tree] =>
[position] => 119
)
)
[base_expr] => customers on orders.customerid=customers.customerid
[sub_tree] =>
[position] => 88
)
)
[WHERE] => Array
(
[0] => Array
(
[expr_type] => colref
[base_expr] => customers.customername
[no_quotes] => customers.customername
[sub_tree] =>
[position] => 146
)
[1] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 169
)
[2] => Array
(
[expr_type] => const
[base_expr] => "siddhu"
[sub_tree] =>
[position] => 171
)
)
)
现在我想使用这个数组生成查询。我为什么要这样做，稍后我会向这个数组添加额外的参数。就像我在 WHERE 子句或 Table
中传递附加条件一样例如： 上一个查询
$sql = 'SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate
FROM Orders
LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID where
Customers.CustomerName = "Siddhu"';
现在我想在 where 条件 Customers.CustomerID = "123" and status = "Active" and created_by = 1;[=19= 之后在 where 子句中传递另外两个条件]
所以我的最终查询是这样的
$sql = 'SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate
FROM Orders
LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID where
Customers.CustomerName = "Siddhu" AND Customers.CustomerID = "123" and status = "Active" and created_by = 1;
那么如何实现呢，或者PHPSQLPARSER中是否有函数使用这个数组来生成查询？感谢您的提前和抱歉任何语法错误
老实说，我承认我没能完全理解这个问题。但试图从我能够理解的内容中回答它。
我相信您想使用第一个查询的输出并生成另一个带有附加 where 子句的查询。您可能只能通过在原始查询本身中使用 CONCAT 的简单附加 select 子句来做到这一点。将您的硬编码原始查询与所需列连接起来，并生成动态 SQL 作为附加输出列。
SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate,
CONCAT("SELECT Orders.OrderID, Customers.CustomerName, Orders.OrderDate FROM Orders LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID WHERE Customers.CustomerName = \"Siddhu\"", " AND Customers.CustomerID = \"", Customers.CustomerID, " and status = \"Active\" and created_by = 1;")
FROM Orders
LEFT JOIN Customers ON Orders.CustomerID=Customers.CustomerID
WHERE Customers.CustomerName = "Siddhu"
如果状态字段也来自其中一个表，那么您可以中断 CONCAT 函数并改用该列名。希望能帮助到你。
要从数组构建查询，PHPSQLParser 有一个 creator 方法，
来自此处的文档：Parser manual
There are two ways in which you can create statements from parser output
Use the constructor
The constructor simply calls the create() method on the provided parser tree output for convenience.
$parser = new PHPSQLParser('select 1');
$creator = new PHPSQLCreator($parser->parsed);
echo $creator->created;
Use the create() method
$parser = new PHPSQLParser('select 2');
$creator = new PHPSQLCreator();
echo $creator->create($parser->parsed);
/* this is okay, the SQL is saved in the _created_ property. */
/* get the SQL statement for the last parsed statement */
$save = $creator->created;
当然因为$parser->parsed是一个array，你可以传递你自己的数组
echo $creator->create($myArray);
要向数组添加条件，可以将其添加到WHERE条件数组
每个条件都有 3 个数组定义 colref（列名）、operator（以及 .. 运算符）和 const（值）
棘手的部分是 WHERE 的子数组中的 position，因为您需要指定要插入这三个中的每一个的确切位置，因此基于 WHERE 在您提供的示例中，您可以看到运算符 = 的位置是 169 （从 0 开始）
检查此工具以查看 character position in a string（从 1 开始）。
并基于此Complexe example
你最终的 WHERE 数组应该是这样的（不过我不确定你是否需要 [no_quotes] 键）：
[WHERE] => Array
(
[0] => Array
(
[expr_type] => colref
[base_expr] => customers.customername
[no_quotes] => customers.customername
[sub_tree] =>
[position] => 146
)
[1] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 169
)
[2] => Array
(
[expr_type] => const
[base_expr] => "siddhu"
[sub_tree] =>
[position] => 171
)
// adding other conditions
[3] => Array
(
[expr_type] => operator
[base_expr] => and
[sub_tree] =>
[position] => 180
)
[4] => Array
(
[expr_type] => colref
[base_expr] => customers.CustomerID
[no_quotes] => customers.CustomerID
[position] => 184
)
[5] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 205
)
[6] => Array
(
[expr_type] => const
[base_expr] => "123"
[sub_tree] =>
[position] => 207
)
[7] => Array
(
[expr_type] => operator
[base_expr] => and
[sub_tree] =>
[position] => 213
)
[8] => Array
(
[expr_type] => colref
[base_expr] => status
[no_quotes] => status
[position] => 217
)
[9] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 224
)
[10] => Array
(
[expr_type] => const
[base_expr] => "Active"
[sub_tree] =>
[position] => 226
)
[11] => Array
(
[expr_type] => operator
[base_expr] => and
[sub_tree] =>
[position] => 235
)
[12] => Array
(
[expr_type] => colref
[base_expr] => created_by
[no_quotes] => created_by
[position] => 239
)
[13] => Array
(
[expr_type] => operator
[base_expr] => =
[sub_tree] =>
[position] => 250
)
[14] => Array
(
[expr_type] => const
[base_expr] => 1
[sub_tree] =>
[position] => 252
)
)
PS ：我在您提供的多个条件下使用了查询，并取消了缩进和换行符以找出位置，如果您可以使用这些值没有所需的字符串输出，因为这应该只是一个示例。
我希望这对您有所帮助，或者至少给您一个想法，祝您好运。