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Comparison with MSSQL to learn about MYSQL (8) -- insert, update, delete, and mssqlmysql
Similarly, it will only explain the difference between SQL Server and SQL Server.
Insert
Insert multi-row query results into the table
Syntax
INSERT INTO
We have previously introduced the INSERT and REPLACE statements in MySQL database UPDATE statements. Today we will introduce the UPDATE, DELETE, and TRUNCATETABLE statements, and introduces the practical application functions of these statements.
Problems with insertions
When PHP is manipulating large amounts of data, the solution I think of IS as follows
Method One: Construct the SQL statement in the Foreach Loop traversal and insert the databaseINSERT into XXX values (xxx,xxx,xxx)
Method
The following article describes the update statements of the MySQL database in detail. We will introduce the INSERT and REPLACE statements to you today, we all know that the syntax of these two statements is very similar. The main difference between
This article describes how to use the UPDATE and DELETE statements in MySQL. it is the basic knowledge in MySQL beginners. For more information, see
How to use the UPDATE and DELETE statements in MySQL _ MySQL
UPDATE
The update set syntax is used
One, CGI mode installation security
Second, the Apache module to install security
When PHP is installed as an Apache module, it inherits the privileges of the Apache user (usually "nobody"). This has some impact on security and authentication. For
This article describes in detail how to prevent repeated mysql insert records. if you are interested, you can refer to many methods to prevent repeated mysql insert records. ignore is commonly used, replace, on duplicate key update, of course we can
A brief introduction to PHP syntax
1. Embedding Method:
Similar to the ASP
2. Reference Documents :
There are two ways to refer to a file: Require and include.Require use methods such as require ("myrequirefile.php"); This function is usually
Prevent repeated mysql insert records.
There are many methods to prevent repeated inserts of records in mysql. ignore, Replace, and on duplicate key update are commonly used. Of course, we can also judge them in php.
Solution 1:Use the ignore
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