"not null" Code Answer's

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javascript not null

By TC5550TC5550 on Jun 04, 2020 
if (variable !== null) {
  console.log("Var is NOT null");
}

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4

javascript is not null

By D3signaD3signa on Jul 06, 2020 
if(data !== null && data !== '') {
   // do something
}

Source: stackoverflow.com

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3

sql not null

By Hungry HippopotamusHungry Hippopotamus on Dec 07, 2020 
SELECT column_name FROM table_name 
WHERE column_name IS NOT NULL;

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6

sql is not null

By DevLorenzoDevLorenzo on Jan 07, 2021 
The reverse of NULL. Tests for values that aren’t empty / NULL
"Tests for empty (NULL) values.
Example: Returns users that haven’t given a contact number.
SELECT * FROM users
WHERE contact_number IS NULL;"

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1

NOT NULL SQL

By AnkurAnkur on Apr 21, 2020 
By default, a column can hold NULL values.
The NOT NULL constraint enforces a column to NOT accept NULL values.
This enforces a field to always contain a value, which means that you cannot insert a new record, or update a record without adding a value to this field.

Sql NOT NULL in creating a table
CREATE TABLE Persons (
    ID int NOT NULL,
    LastName varchar(255) NOT NULL,
    FirstName varchar(255) NOT NULL,
    Age int
);

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0

not null

By Cautious ChipmunkCautious Chipmunk on Apr 27, 2021 
SELECT NVL(emp_id,001)emp_id,emp_name FROM employee_details;

Source: www.tutorialscampus.com

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0

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