MySQL basic syntax

MySQL basic syntax:

1. Create library: The name of the database;

Create a library with encoded format: Create database name character set encoding format;

Delete Library: drop database name;

2. CREATE TABLE: Name of Creation table table (field 1 type 1, field 2 Type 2, field 3 Type 3 ...) ）；

Delete table: drop database table name;

3, Increase (insert):

First format: INSERT into table name (Field 1, Field 2, Field 3, field 4) VALUES (value 1, value 2, value 3, value 4), (value 1, value 2, value 3, value 4), ...

Second format: INSERT into table name set field 1= value 1, field 2= value 2, field 3= value 3 ... ；

4. Delete (delete):

Delete from table name where condition

Such as:delete from table name where study number = 1;

5, change (update):

Update table name set field 1= value 1, field 2= value 2, field 3= value 3, ... Where condition

Such as:delete table name set Name= ' Zhang San ' where study number = ' 01 ';

6. Check (SELECT):

SELECT * from table name; Find all data in table

Select field 1, Field 2, ... from table name; Specify field value in lookup table

Select field 1 from table name where condition; find specified value for specified field in specified table

7. Logical operators common in MySQL: with (and), or (or), non (not)

8. Database query Language (DQL): Query statement for table, select

DB Definition Language (DDL): Create DATABASE, drop database, CREATE TABLE, drop table

Database manipulation Language (DML): UPDATE, INSERT, delete

MySQL basic syntax