Let's say I have two tables:
假设我有两张桌子:
user (user_name varchar(50), project_name varchar(50))
project (project_name varchar(50), project_cost(integer))
userLet's say I have two tables:
假设我有两张桌子:
user (user_name varchar(50), project_name varchar(50))
project (project_name varchar(50), project_cost(integer))
user