sql str function

SQL 21:10:02 read 1029 comments 0 font size: large and small subscriptions STR () function in SQL Declare @ number smallintSet @ number = 2Select cast (replace (STR (@ number, 3), '', '0') as char (3 )) STR function [String]Function Returns

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The 1 str () function is used to convert numeric type data to non-character types.2 str () function syntaxSelect str (expression of numeric type [, total expression length] [, Number of digits after decimal point])The total length of the expression

Common String functions for MySQLOrganize yourself from official documents.1.1     SUBSTR or SUBSTRINGSUBSTR (Str,pos), SUBSTR (str from POS), SUBSTR (Str,pos,len), SUBSTR (str fromPOS for Len)SUBSTR () is a synonym for SUBSTRING ().SUBSTRING

Talking about PHP security and anti-SQL injection, prevent XSS attack, anti-theft chain, anti-CSRF Objective: First of all, the author is not a web security experts, so this is not a Web security expert-level article, but learning notes, careful

This article summarizes almost all possible PHP anti-SQL Injection code. Determine the XP_CMDSHELL executable status WEB virtual directory discovered Upload ASP, php, and jsp Trojans; Obtain the Administrator permission; // PHP full-site

Determine xp_cmdshell performance Discovery Web Virtual Directory Upload asp,php,jsp Trojan; Get administrator privileges; PHP Whole station Anti-injection program, need to require_once the document in the public fileJudge the state of

Php filters html strings to prevent SQL injection of instance code. Php filters html strings to prevent SQL injection. it uses functions to process the strings to be written to the database to filter illegal information and malicious html code! Code:

A string is usually used as an action object, such as finding a substring in a string, seeking a substring, inserting a substring at a point in a string, and deleting a substring. The necessary and sufficient condition for two strings to be equal is

PHP Filters HTML strings, prevents SQL injection, and uses functions to filter out illegal information, as well as malicious HTML code, by using a string that will be written to the database. Code: PHP Batch filter Post,get sensitive dataif