MySQL statement notes

CREATE TABLE' Player ' (' ID ' )int( One) not NULLauto_increment, ' name 'Char( -) not NULL DEFAULT "'COMMENT'Site name', ' area 'varchar(255) not NULL DEFAULT "', ' Alexa 'int( One) not NULL DEFAULT '0'COMMENT'Alexa Rankings', ' team 'Char(Ten) not NULL DEFAULT "'COMMENT'National',  PRIMARY KEY(' id ')) ENGINE=InnoDB auto_increment=Ten DEFAULTCHARSET=UTF8;INSERT  into' Player 'VALUES('1','Leonard','San Antonio, USA',' the','Spurs'), ('2','Curry','United States Jinzhou','94','Warriors'), ('3','Durant','United States Jinzhou',' the','Warriors'), ('4','James','Cleveland, USA',' the','Knights'), ('5','Lillard','United States Oakland',' the','Pioneering person');

First, the header is created, and then the data is inserted

Table and library concept, (the database is equivalent to a file bag, there are many table tables)
Show databases;//View Gallery
Use map;//using a library
Show table;//all tables in the gallery
SELECT * from player;//table data in the Search table msg

The above learning in the database learndb, the inside injected with SQL script
Basic concepts
1. The database is a software for managing data
There are a lot of 2.mysql clients (MYSQL.EXE,PHPMYADMIN,NAVICAT)
Mysql.exe is a purely command-line client
Basic operations:
The most basic:
show databases; View Library
Use test; Select Library
Show tables; View the table of the library
SELECT * from player; retrieve all columns

A little to remember:
Retrieving data:
1. Retrieve all columns select * FROM Products;
2. Retrieving different values select DISTINCT vend_id from the products;
3. Search limit Results Select Prod_name from the products limit 5;

Sort the retrieved data:
1. Sort data Select Prod_name from the products order by Prod_name;
2. Sorting multiple columns Select Prod_id,prod_price,prod_name from the products order by Prod_price,prod_name;
3. Sort the column position select Prod_id,prod_price,prod_name from the products order by 2, 3;
4. Descending order Select Prod_id,prod_price,prod_name from the products order by Prod_price DESC;


Filter data:
1. Using the WHERE clause
Select Prod_name,prod_price from Products where prod_price=3.49;
The following is the operator of the WHERE clause:
(1) Check single value: Where prod_price<=10;
(2) Mismatch check: SELECT vend_id, prod_name from Products WHERE vend_id <> ' DLL01 ';
(3) Range value check: SELECT prod_name, prod_price from Products WHERE Prod_price between 5 and 10;
(4) Null value check:
Advanced filtering:

MySQL statement notes