--[[luarocks lua语言的包管理器luasql  https://luarocks.org/brew install luarocksluarocks install luasql-mysql   注意此处，如果你是 mariadb，然后要求指定 MYSQL_DIR 参数的时候，千万不要指到 mariadb 的安装目录，而是要指到一个真正的mysql 安将目录那是不是不能用 mariadb 呢，也不是，要手动安装一遍luarocks install luasql-sqlite3luarocks install luasql-postgresluarocks install luasql-mysqlluarocks install luasql-sqliteluarocks install luasql-odbc]]--local luasql = require("luasql.mysql");client = luasql.mysql();--创建连接
conn=client:connect("lua-test","root","12345678","127.0.0.1",3306); --数据库名，用户名，密码，IP，端口if conn == nil thenprint("连接失败");os.exit();
end--select
rs=conn:execute("select * from user_list order by id desc");row = rs:fetch({},"a");while row doprint(row.id,row.name,row.age);row = rs:fetch(row,"a");end--insert
--rs=conn:execute("insert into user_list (name,age)values('def',456)");
--print(rs);--update
rs=conn:execute("update user_list set name='DEF',age=789 where id<=4");
print(rs);--delete
rs=conn:execute("delete from  user_list where id=4");
print(rs);conn:close();
client:close();