mysql select max value from column

Data Types supported by Mysql (Summary of column types) and mysql Data Types I. Numerical type Mysql supports all numeric types in standard SQL, including strict data types (INTEGER, SMALLINT, DECIMAL, NUMBERIC), and approximate numeric data types

MySQL learning footprint record 10 -- Summary Data -- MAX (), MIN (), AVG (), SUM (), COUNT () bitsCN.com MySQL learning footprint record 10 -- Summary Data -- MAX (), MIN (), AVG (), SUM (), COUNT () Data used in this article mysql> SELECT prod_

The MySQL stored procedure uses dynamic row-to-column conversion. The instance described in this article successfully implements dynamic row-to-column conversion. The following is an example of a simple database. Data Table Structure Here, I will

MySQL learning footprint record 10 -- Summary Data -- data used in this article, such as MAX (), MIN (), AVG (), SUM (), and COUNT () mysql> SELECT prod_price FROM products;+------------+| prod_price |+------------+| 5.99 || 9.99 ||

1. download MySql 1. download MySql Open http://www.mysql.com/downloads/mysql/#downloads download in browser My downloaded version is Red Hat 5 version of http://www.mysql.com/downloads/mirror.php? Id = 407552 Upload the file to the server, or

Summary I haven't written SQL statements for a long time. I have a question in the Q & A today and I will study it. Problem link: about Mysql's hierarchical output problem scenario overview the scores recorded in the school. each person chooses

For MYSQL column types, refer to this appendix to introduce each column type provided by MySQL. For more information about how to use each type, see chapter 2nd. Unless otherwise specified, the listed types already exist in MySQL3.21.0. The

OverviewLong time no write SQL statements, today to see a question and answer, take a look.Problem Link: Hierarchical output problem with MySQLScenario BriefThe school records the results, each person's choice course is different, and later will add

1 InnoDB The problem of duplicate values in the self-increment columnStart with the problem and reproduce the bugUse Test;drop table t1;create table T1 (ID int. auto_increment, a int, primary key (ID)) Engine=innodb;insert into T1 values INSERT into

MySQL single-column index is what we often see in MySQL database, the difference between MySQL single-column index and composite index may be a lot of people do not know very well, the following for you to analyze the main differences, for your