MySQL-插入查询
MySQL-插入查询 (MySQL - Insert Query)
To insert data into a MySQL table, you would need to use the SQL INSERT INTO command. You can insert data into the MySQL table by using the mysql> prompt or by using any script like PHP.
要将数据插入MySQL表中，您将需要使用SQL INSERT INTO命令。 您可以使用mysql>提示符或使用任何脚本(如PHP)将数据插入MySQL表。
句法 (Syntax)
Here is a generic SQL syntax of INSERT INTO command to insert data into the MySQL table −
这是INSERT INTO命令的通用SQL语法，用于将数据插入MySQL表-
INSERT INTO table_name ( field1, field2,...fieldN )
VALUES
( value1, value2,...valueN );
To insert string data types, it is required to keep all the values into double or single quotes. For example "value".
要插入字符串数据类型，需要将所有值都保留在双引号或单引号中。 例如“ value” 。
从命令提示符插入数据 (Inserting Data from the Command Prompt)
To insert data from the command prompt, we will use SQL INSERT INTO command to insert data into MySQL table tutorials_tbl.
要从命令提示符处插入数据，我们将使用SQL INSERT INTO命令将数据插入MySQL表tutorials_tbl。
例 (Example)
The following example will create 3 records into tutorials_tbl table −
下面的示例将在tutorials_tbl表中创建3条记录-
root@host# mysql -u root -p password;
Enter password:*******
mysql> use TUTORIALS;
Database changed
mysql> INSERT INTO tutorials_tbl
->(tutorial_title, tutorial_author, submission_date)
->VALUES
->("Learn PHP", "John Poul", NOW());
Query OK, 1 row affected (0.01 sec)
mysql> INSERT INTO tutorials_tbl
->(tutorial_title, tutorial_author, submission_date)
->VALUES
->("Learn MySQL", "Abdul S", NOW());
Query OK, 1 row affected (0.01 sec)
mysql> INSERT INTO tutorials_tbl
->(tutorial_title, tutorial_author, submission_date)
->VALUES
->("JAVA Tutorial", "Sanjay", '2007-05-06');
Query OK, 1 row affected (0.01 sec)
mysql>
NOTE − Please note that all the arrow signs (->) are not a part of the SQL command. They are indicating a new line and they are created automatically by the MySQL prompt while pressing the enter key without giving a semicolon at the end of each line of the command.
注意 -请注意，所有箭头符号(->)都不是SQL命令的一部分。 它们表示新行，它们是由MySQL提示符自动创建的，同时按下Enter键，而无需在命令的每一行末尾添加分号。
In the above example, we have not provided a tutorial_id because at the time of table creation, we had given AUTO_INCREMENT option for this field. So MySQL takes care of inserting these IDs automatically. Here, NOW() is a MySQL function, which returns the current date and time.
在上面的示例中，我们没有提供tutorial_id，因为在创建表时，我们为此字段提供了AUTO_INCREMENT选项。 因此，MySQL负责自动插入这些ID。 在这里， NOW()是一个MySQL函数，它返回当前日期和时间。
使用PHP脚本插入数据 (Inserting Data Using a PHP Script)
You can use the same SQL INSERT INTO command into the PHP function mysql_query() to insert data into a MySQL table.
您可以在PHP函数mysql_query()中使用相同SQL INSERT INTO命令，以将数据插入MySQL表。
例 (Example)
This example will take three parameters from the user and will insert them into the MySQL table −
此示例将从用户那里获取三个参数，并将其插入到MySQL表中-
<html>
<head>
<title>Add New Record in MySQL Database</title>
</head>
<body>
<?php
if(isset($_POST['add'])) {
$dbhost = 'localhost:3036';
$dbuser = 'root';
$dbpass = 'rootpassword';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
if(! $conn ) {
die('Could not connect: ' . mysql_error());
}
if(! get_magic_quotes_gpc() ) {
$tutorial_title = addslashes ($_POST['tutorial_title']);
$tutorial_author = addslashes ($_POST['tutorial_author']);
} else {
$tutorial_title = $_POST['tutorial_title'];
$tutorial_author = $_POST['tutorial_author'];
}
$submission_date = $_POST['submission_date'];
$sql = "INSERT INTO tutorials_tbl ".
"(tutorial_title,tutorial_author, submission_date) "."VALUES ".
"('$tutorial_title','$tutorial_author','$submission_date')";
mysql_select_db('TUTORIALS');
$retval = mysql_query( $sql, $conn );
if(! $retval ) {
die('Could not enter data: ' . mysql_error());
}
echo "Entered data successfully\n";
mysql_close($conn);
} else {
?>
<form method = "post" action = "<?php $_PHP_SELF ?>">
<table width = "600" border = "0" cellspacing = "1" cellpadding = "2">
<tr>
<td width = "250">Tutorial Title</td>
<td>
<input name = "tutorial_title" type = "text" id = "tutorial_title">
</td>
</tr>
<tr>
<td width = "250">Tutorial Author</td>
<td>
<input name = "tutorial_author" type = "text" id = "tutorial_author">
</td>
</tr>
<tr>
<td width = "250">Submission Date [ yyyy-mm-dd ]</td>
<td>
<input name = "submission_date" type = "text" id = "submission_date">
</td>
</tr>
<tr>
<td width = "250"> </td>
<td> </td>
</tr>
<tr>
<td width = "250"> </td>
<td>
<input name = "add" type = "submit" id = "add" value = "Add Tutorial">
</td>
</tr>
</table>
</form>
<?php
}
?>
</body>
</html>
While doing a data insert, it is best to use the function get_magic_quotes_gpc() to check if the current configuration for magic quote is set or not. If this function returns false, then use the function addslashes() to add slashes before the quotes.
进行数据插入时，最好使用函数get_magic_quotes_gpc()来检查是否设置了魔术引号的当前配置。 如果此函数返回false，则使用函数addlashes()在引号之前添加斜杠。
You can put many validations around to check if the entered data is correct or not and can take the appropriate action.
您可以进行很多验证来检查输入的数据是否正确，并可以采取适当的措施。
翻译自: https://www.tutorialspoint.com/mysql/mysql-insert-query.htm