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Reprint: http://new-restart.iteye.com/blog/1416765SQL like wildcard character fuzzy query techniques and special charactersSQL like wildcard character fuzzy query techniques and special charactersHow to deal with time query by 1,sql likeThere are
Transfer from http://new-restart.iteye.com/blog/1416765SQL like wildcard character fuzzy query techniques and special charactersHow to deal with time query by 1,sql likeThere are savetime (smalldatetime type) fields in the SQL data table with two
1. SQL like method for time query processing the SQL data table has a savetime (smalldatetime type) field with two records in the table with Savetime value: 2005-3-8 12:12:00 and 2005-6-6 14:02:02 I can not find anything with the
To prevent program SQL statement errors and SQL injection, single quotes must be processed. There are 2 ways to:1, use parameters, such as SELECT * from yourtable WHERE name = @name;In Java, you use preprocessing PreparedStatement to add parameters.2
For more information about bugs fixed in SQL Server 2000 Service Pack 4, click the following article number to view the article in the Microsoft Knowledge Base:314128 FIX: When an RPC call is performed, Access with conflicting values includes an
SQL Server uses fuzzy query to process special characters.
Today, when I was dealing with SQL queries, I encountered the like Query problem, so I analyzed the problem.
Problem:
Select * from v_workflow_rt_task_circulate where Name like '% [admin]
Php filters out special characters of SQL anti-injection code
// Method 1
// Filter ', ", SQL language name
Addslashes ();
// Method 2: Remove all html tags
Strip_tags ();
// Method 3: filter
1. SQL statements
Is a language
Meets ANSI standards
Keyword cannot be abbreviated
Use statements to control the definition information and data of tables in the database
SQL is the abbreviation of Structured Query Language (Structured Query
Next: T-SQL Dynamic Query (3)--Static SQLObjective:There's a lot of talk about dynamic queries, and this article describes some of the ways to use dynamic SQL to solve dynamic queries.Why use Dynamic sql:In many projects, dynamic SQL is widely used
When the where statement contains the like condition, if the parameter needs to match special characters such as % and _, it must be processed; otherwise, it will be processed as a wildcard. Sqlserver: two solutions are available: Replace [with [], %
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