I\'m using CakePHP. When trying to insert a null value into a field it turns into 1900-01-01 00:00:00.
Using Play! framework and it\'s JPASupport class I have run into a problem with a legacy database. I have the following class:
I know NULL is not zero... nor it is empty 开发者_开发问答string. But then what is the value of NULL... which the system keeps, to identify it?NULL is a special element of the SQL language that is nei
Another opinion question: What is the proper (in your opinion) to check for nulls in an MVC controller.For instance, if you have an edit controller that fetches a record from the db based on an id, w
For a while I have been struggling to integrate scala with java methods that might return null.I came up with the following utility w开发者_开发问答hich helps a lot:
I understand the purpose of the NULL constant in C/C++, a开发者_开发问答nd I understand that it needs to be represented some way internally.
I\'m completely ignorant of SQL/databases, but I was chatting with a friend who does a lot of database work about how some databases use a \"boolean\" field that can take a value of NULL in addition t
I had to write a routine that increments the value of a variable by 1 if its type is number and assigns 0 to the variable if not, where the variable is initially null or undefined.
I have a class with a Boolean attribute. When I instantiate and persist this class, the Boolean attribute is stored with the \"false\" value instead of the expectable 开发者_JAVA技巧\"null\". How can
Will null instanceof So开发者_C百科meClass return false or throw a NullPointerException?No, a null check is not needed before using instanceof.
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