sql("finedb","select id from fine_user WHERE userName = '${fine_username}'")
id为uniqueidentifier格式数据
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官方教程里的$fine_username函数使用可能更改了,应该为
sql("finedb","select id from fine_user WHERE userName = '" + $fine_username + "'",1)
sql("finedb","select id from fine_user WHERE userName = '${fine_username}'",1)