The field type is DateTime,the default value is null
The field type is DateTime, the default value is null, and NullPointException when a query is mapped to a Java.

Hi @wdream, so the column is defined as ts DateTime DEFAULT NULL? Could you share more information to help me reproduce the issue?
gmt_register Nullable(DateTime) default NULL When you set it up like this, you get a problem
gmt_register Nullable(DateTime) default NULL When you set it up like this, you get a problem
I assume you're using latest driver but I was not able to reproduce the issue. Could you provide more details and maybe minimum code for reproducing?
I use Java programming and set the field type as Date. When the type in DB is Nullable(DateTime) default NULL and the value is NULL, an error will be reported when the query comes out