SQL：select/distinct/where/and/or/asc/desc/insert into/update

• SELECT语句
  select city,name from Customers;

• DISTINCT语句
  select distinct city from Customers;

• WHERE语句
  select * from customers where city='Berlin';

• AND & OR语句
  SELECT * FROM CUSTOMERS WHERE CITY='Berlin' AND (CUSTOMERID=1 OR CUSTOMERID=2);

• ASC & DESC语句
  SELECT * FROM CUSTOMERS ORDER BY CITY DESC;

• ORDER BY语句
  SELECT * FROM CUSTOMERS ORDER BY CITY DESC;

• INSERT INTO语句
  insert into……values……
  INSERT INTO CUSTOMERS('CUSTOMERNAME','ADDRESS','CITY') VALUES('A','6','C');

• UPDATE语句
  update……set……where
  UPDATE CUSTOMERS SET CITY='Berlin' WHERE CUSTOMERID=2;