mysql guid type

(Transferred from: http://blog.csdn.net/maonongwu/article/details/6327093)GUID IntroductionGUID (Global unique identifier) Globally unique identifier, which is a 16-byte binary value generated by the identity number on the network card (each network

Sometimes Toad or program may encounter the following errors: System. FormatExceptionThe GUID should contain 32 digits (xxxxxxxx-xxxx-xxxxxxxxxxxx) with four dashes ).Stack Trace:In System. Guid .. ctor (String g)In MySql. Data. Types.

UUID and guid UUID is a string generated after the 32-byte string is separated by four hyphens (-), with a total length of 36 bytes. For example: 550e8400-e29b-41d4-a716-446655440000 Http://gohands.blogbus.com/logs/147479174.html GUID is

Uses a GUID generated by a database of type string. guid:globally Unique Identifier, a globally unique identifier, also known as a UUID, is a 128-bit long number, expressed as a 16 binary. The core idea of the algorithm is to combine the machine's

Because the system uses a large number of GUIDs as primary keys, the data file is large and the data query speed is slow. The intent is converted to an int primary key. First look at the results of the next single table test GUID and int as the

Set the primary key. In general, int> Guid/string, guidstringSet the primary key. In general, int> Guid/string   Generally, setting int as the primary key is more

How complicated is event? It can be seen how the best addEvent came into being six years ago, and jQuery paid more than one thousand six hundred lines of hard-earned code (v 1.5.1) after six years, the browser with various cores is ready.I tried to

Data type Type Description Bit Integral type The bit data type is integral, and its value can only be 0, 1, or null. This data type is used to store data with only two possible values,

Syntax differences between MySQL and Oracle detailed comparison of some simple commands of bitsCN. comOracle and mysql 1) SQL> select to_char (sysdate, 'yyyy-mm-DD') from dual; SQL> select to_char (sysdate, 'hh24-mi-SS') from dual; Mysql> select

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