notnull Questions
3
Consider the following table with approximately 10M rows
CREATE TABLE user
(
id bigint NOT NULL,
...
CONSTRAINT user_pk PRIMARY KEY (id)
)
WITH (
OIDS=FALSE
)
Then i applied the following al...
Telephonist asked 23/10, 2013 at 16:49
1
Solved
I'm having an issue with MySQL 5.6 InnoDb ignoring a NOT NULL foreign key when running an INSERT INTO xxx (col) SELECT .... The constraint is enforced properly when running insert statements in oth...
Abe asked 23/12, 2016 at 0:10
1
Just encountered a bug, where the issue was that i had:
@Column(name = "ACTIVE")
@NotNull
private boolean active;
In my code I had forgot to set the value but it still "worked" as the default of...
Petulance asked 21/10, 2016 at 9:8
2
Solved
I have a simple table of installs:
prod_code
email
install_slot
If the install_slot is NULL, then it's an available install slot. Not null -- then, used slot. I need to return a result of total...
4
I want to use a serializer that renders not null attributes
class PersonSerializer < ActiveModel::Serializer
attributes :id, :name, :phone, :address, :email
end
Is this possible.
Many th...
Interpret asked 27/11, 2014 at 9:49
2
Solved
I am trying to learn Java 8 feature Optional. I am confused about how Optional.orElse is working. Here is what i have tried:
public class OptionalsExample {
public static void main(String[] args...
Auxochrome asked 27/5, 2016 at 13:47
5
Solved
I have an Oracle database, and a table with several not null columns, all with default values.
I would like to use one insert statement for any data I want to insert, and don't bother to check if...
3
Solved
I'm using db2 version 9.7* and it seems impossible to make a NOT NULL column nullable in any straightforward way.
Unfortunately the solution of using a more developer friendly database is not ava...
Rowland asked 2/8, 2011 at 13:32
3
Solved
There is the @NotNull annotation which validates that a certain object is not null.
There is the @NotEmpty annotation which validates that a certain collection/map/string/... is not empty.
Is the...
Juan asked 16/1, 2015 at 12:37
5
Solved
I know you can change the default value of an existing column like this:
ALTER TABLE Employee ADD CONSTRAINT DF_SomeName DEFAULT N'SANDNES' FOR CityBorn;
But according to this my query supposed...
Yseulte asked 12/9, 2014 at 16:0
1
Solved
I have by pure chance discovered that the C# compiler turns this method:
static bool IsNotNull(object obj)
{
return obj != null;
}
…into this CIL:
.method private hidebysig static bool IsNotNu...
Repent asked 28/2, 2015 at 12:43
2
Solved
I have a sqlite table (sqlite version 3.7.3) where nulls inserted into the primary key column are being undesirably auto-incremented:
sqlite> CREATE TABLE foo(bar INTEGER NOT NULL PRIMARY KEY);...
Merrile asked 11/6, 2013 at 20:28
2
Solved
I have a Spring Entity with a field annotated with @NotNull from javax.validation.constraints
@Entity
public abstract class IdentifiableNamedEntity {
@NotNull
@Column(unique = true)
private Str...
4
Solved
I want to create a procedure in SQL Server that will select and join two tables. The parameters @company, @from and @to are always set but @serie_type can be NULL. If @serie_type is not NULL i just...
Antihalation asked 22/9, 2011 at 11:23
1
Solved
Scala compiler has -Xcheck-null which tries to check if there are any potential null pointer dereference in runtime.
It's ok for me, but I get too much false positives, i.e. suppose I define logge...
Trisect asked 28/8, 2013 at 17:16
1
Solved
Consider the following code:
public static void Foo()
{
Bar(null);
}
public static void Bar([NotNull] string s)
{
if (s == null)
throw new ArgumentNullException("s");
}
The [NotNull] a...
Fadil asked 22/5, 2012 at 0:12
4
Solved
I am curious to know is it possible to create a conditional not null constraint in sql? In otherwords is it possible to create a constraint such that a column B can be null as long column A contai...
Pangaro asked 23/4, 2012 at 1:25
2
Solved
I am using postgreSQL. I have a column that:
NOT NULL
However when I want to insert a row with an empty string as like:
''
it doesn't give me an error and accepts. How can I check insert valu...
Peter asked 31/10, 2011 at 7:59
2
Solved
I have a function which would return a record with type my_table%ROWTYPE, and in the caller, I could check if the returned record is null, but PL/SQL complains the if-statement that
PLS-00306: w...
1
Solved
I am trying to insert values to a table which contains two columns with inet types. When I try to insert a NULL value to these columns I get an error saying
ERROR: invalid input syntax for type ...
Enow asked 16/4, 2011 at 7:6
1
Solved
Notice: As of Scala 2.11, NotNull is deprecated.
As far as I understand, if you want a reference type to be non-nullable you have to mixin the magic NotNull trait, and the compiler will automatica...
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