I found concatenating must be done in where condition select table_date from table_name where concat(DATE_FORMAT(now(),’%Y-%m’),’-‘,table_date) < curdate() solved How can I use MySQL alias in Where condition
string is an alias in C# for System.String. So technically, there is no difference. It’s like int vs. System.Int32. As far as guidelines, it’s generally recommended to use string any time you’re referring to an object. e.g. string place = “world”; Likewise, I think it’s generally recommended to use String if you need to refer … Read more