mysql field

Recently in MySQL to insert a character size, using the Mediumblob binary type, because the characters are large and small, is the log file returned by Sina, as follows:"A:13:{s:14:\" _input_charset\ "s:5:\" utf-8\ "s:10:\" gmt_create\ "s:14:\" 20160

EnumerationEnumeration types specify the number and content of values, which is useful for attributes that require a value to be qualified. For example, there are three kinds of sex, male, female, unknown, whether there are two types of printing,

How can mysql be corrected? SELECT (select replace ('500x1x10', 'X', '*') AS a)/5000; the result is 0.1, but it is actually 1. how to correct it? Reply to discussion (solution) String expressions are not computed.Mysql does not have functions

PHP compilation problem summary 1 , PDO_MYSQL make: *** [pdo_mysql.lo] Error 1 When compiling and installing the PDO_MYSQL extension module, the following message is always displayed: In file sorted ded

MySQL can be created in the http: // localhost/phpMyAdmin/index. php database. (Stateless table) MySQL and PostgreSQL are both available in PHP.The following is a simple example of PHP access between the two.Furthermore, it should be noted that the

How does PHP query MYSQL field addtime as the timestamp by date? U = 20130328 & amp; page = 1 & nbsp; & amp; page = This is used to query data on the day of 20130328 or 20130329 by page & lt ;? Phpinclude & nbsp; "../PHP how to query by date The

Proportion: the content of the field is 12. 34567. I want to extract the exact two digits after the decimal point 12.34. However, the number of digits before the decimal point is not fixed. You can use the following method.   Instr (STR, substr)

why migrate? First of all, from the operational cost considerations, with MySQL can save a lot of money. On the other hand, the stability and function of MySQL are constantly improved and enhanced, which can basically meet the needs of customers,

Create a databasein the process of creating a database encountered a problem, the original library should be created with the UTF8 character set, the system default character set is latin1 format, so even if you create a library with phpMyAdmin

3-5 years of Phper common face questions, 3-5phper questions See a lot of, summed up, more suitable for a certain experience of the Phper 1. What PHP books and blogs do you like? CSDN, tiger sniffing, cloud hunting2, JS closure is what?3, for and

MySQL dynamically modifies the varchar length bitsCN.com Although this situation should not happen, we should have designed it in advance and won't be able to change it in the future, but due to the negligence of our previous work, to be honest, it

BitsCN.com is a problem with mysql calling stored procedures for multiple times. when using mysql c api to build an application, one connection can only execute one stored procedure, no matter how free we use this connection again, there will be a

MySQL is case-insensitive by default. this involves the knowledge of the collate character set and validation rules. we will discuss the case-insensitive method for MySQL to query time zone strings. if you insert two rows of values 'A' and 'A' in A

How does PHP query MYSQL field addtime as the timestamp by date? U20130328 & amp; page1 & nbsp; & amp; page is used to query data of the day of 20130328 or 20130329 by page & lt ;? Phpinclude & nbsp; .. your Desong. inc. php; $ key & nbsp; PHP: How

If you insert two rows of values 'A' and 'A' in a column with a unique constraint on MySQL, MySQL considers it to be the same, but not in Oracle. is the default MySQL field value case-insensitive? This is a headache. See the following test: Mysql>

If you search for the difference between "mybatis # And $", there must be a lot of explanations. Here I will talk about my application in the project. I want to save a value in a MySQL field, such as a string separated by commas. If you use the $

What is the meaning of the number after the int In the MySQL field? What is the significance of the number after varchar? mysql> create table t(a int(1));Query OK, 0 rows affected (0.10 sec)mysql> insert into t values(123);Query OK, 1 row affected (0

On pycon, some kids shoes share similar concepts, but it is not suitable for general Internet projects. It feels a little too different. However, I implemented this solution before seeing pycon's sharing. The same requirement is different. Here, I

Today, we are preparing to design a complete database. So we Google the MySQL database design principles, mainly data types and table design, for fear that we may forget to sort them out. ReferenceArticle: MySQL field type Author: simaopig

The following are very usefulArticleFrom http://www.jb51.net/list/list_112_1.htm MySQL is stuck. Most threads are in the sending data state for a long time.Date: How to Set MySQL access from other computersDate: