HappyFramework（幸福框架）

摘要： SQL 查询命令SELECT语法SELECT "column_name"FROM "table_name";返回一列1 SELECT Username FROM Users返回多列1 SELECT Username, Password From Users返回所有列1 SELECT * FROM UsersDISTINCT语法SELECT DISTINCT "column_name"FROM "table_name";示例1 SELECT DISTINCT Name FROM UsersWHERE语法SELECT 阅读全文