How To Resolve/Fix PostgreSQL Default Value Not Working || PostgreSQL Column Default Value | pgAdmin

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Description
——————

— In this video, we will

— Use A Default Value
— Default Value Not Working
— Alter Column With A Default Value
— Alter Column Datatype

— So, keep watching and subscribe to my channel

CREATE TABLE EMP(
ID NUMERIC,
NAME CHARACTER VARYING(20),
SALARY NUMERIC(10,2),
DEPTNO CHARACTER VARYING(10)
);

INSERT INTO EMP(id,name,salary,deptno)
values(1,’Akram’,100.23,’10’);

select * from emp;

— Now, let’s alter the table, and make Salary column default

Alter table emp alter column salary set default 50;

— First I will show you when it works and then it won’t work.

INSERT INTO EMP(id,name,deptno)
values(2,’Sohail’,’10’);
— This must have inserted salary as 50, which I have set default value.
— Let’s check

Select * from emp;

— Now, I will show you when default value won’t work

INSERT INTO EMP(id,name,salary,deptno)
values(3,’Knowledge 360′,null,’15’);

— Here, the salary must be inserted as NULL

Select * from emp;

— So, the conclusion is, whenever we give the default value, we do not
— need to mention the column in the insert statement.
— If we do so, then we have to put some value, even if it is null
— The database will accept the null

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