Why database is null immediately after it is loaded
49
What is a NullPointerException, and how do I fix it?
85113
@SessionScoped bean looses scope and gets recreated all the time, fields become null
59517
FATAL_ERROR|System.QueryException: List has no rows for assignment to SObject
43769
How do I Parameterize a null string with DBNull.Value clearly and quickly
67597
Can constructor return a null object?
98908
Is it good practice to set variables to null when they are no longer needed?
90310
Database DML method executes twice in any record has been failed
145158
When is Class.forName needed when connecting to a database via JDBC in a web app?
138823
Why cast null to Object?
143243
Is NULL always false?
2204
What Causes DatabaseTransactionOutOfOrderException and how do I fix this?
48022
Record passed from force:recordData to Apex controller method is null
70532
NullReferenceException after POST
93935
SObject row was retrieved via SOQL without querying the requested field:
114718
Is there a DBMS that allows the "= NULL" syntax?
19989
Apex JSON.serialize() with null values (RELOADED)
40469
Access is denied when attaching a database