Hex String Literal Evaluation Examples

This section provides tutorial examples on how hex string literals are evaluated to values of different datatypes.

Hex string literal example - HexStringLiterals.sql:

-- HexStringLiterals.sql
-- Copyright (c) 2015, HerongYang.com, All Rights Reserved.
--
SELECT x'41424344' AS LINE_1;
SELECT x'31323334' AS LINE_2;
SELECT x'31323334' + 0 AS LINE_3;
SELECT x'01' + 0 AS LINE_4;
SELECT x'0001' + 0 AS LINE_5;
SELECT x'ff' + 0 AS LINE_6;
SELECT x'ffffffff' + 0 AS LINE_7;
SELECT x'ffffffffffffffff' + 0 AS LINE_8;

Run HexStringLiterals.sql on MySQL 5.7 server, you will get:

C:\herong>set "MySQL=\Program Files\MySQL\MySQL Server 5.7"
C:\herong>"%MySQL%\bin\mysql" --user=root --password=TopSecret test 
   < HexStringLiterals.sql

LINE_1
ABCD
LINE_2
1234
LINE_3
825373492
LINE_4
1
LINE_5
1
LINE_6
255
LINE_7
4294967295
LINE_8
18446744073709551615

Note that:

Run HexStringLiterals.sql on MySQL 5.6 and 5.0 servers, you will get:

LINE_1
ABCD
LINE_2
1234
LINE_3
825373492
LINE_4
1
LINE_5
1
LINE_6
255
LINE_7
4294967295
LINE_8
18446744073709552000

Note that:

Run HexStringLiterals.sql on MySQL 4.0 server, you will get:

LINE_1
ABCD
LINE_2
1234
LINE_3
825373492
LINE_4
1
LINE_5
1
LINE_6
255
LINE_7
4294967295
LINE_8
-1

Note that:

Last update: 2015.

Table of Contents

 About This Book

 Introduction of SQL

 MySQL Introduction and Installation

 Introduction of MySQL Programs

 Perl Programs and MySQL Servers

 PHP Programs and MySQL Servers

 Java Programs and MySQL Servers

Datatypes and Data Literals

 Introduction of Datatype

 Data Binary Representations

 Data Literals

 Data Literal Evaluation

 Character String Literal Evaluation Examples

Hex String Literal Evaluation Examples

 Numeric Literal Evaluation Examples

 Operations and Expressions

 Character Strings and Bit Strings

 Commonly Used Functions

 Table Column Types for Different Types of Values

 Using DDL to Create Tables and Indexes

 Using DML to Insert, Update and Delete Records

 Using SELECT to Query Database

 Transaction Management and Isolation Levels

 Locks Used in MySQL

 Defining and Calling Stored Procedures

 Variables, Loops and Cursors Used in Stored Procedures

 Outdated Tutorials

 References

 PDF Printing Version