i am using mysql as back end in my android app but i want to do some if any user try to enter null record (empty fields) than it can’t write in mysql table is it possible to prevent to entering null record in table.
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i am using mysql as back end in my android app but i want to do some if any user try to enter null record (empty fields) than it can’t write in mysql table is it possible to prevent to entering null record in table.
You can mark the columns as
NOT NULL. This will prevent any NULL value to be entered in those columns.The query will fail to execute if aNULLvalue is entered. In the front end you can display an error msg if the if the query fails, to let the user enter the correct value.