How to insert one field value to another field at same table,

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I have one table which has 11 field.field1(id) is primary key identity(1,1).i want to save the value of id to another filed at same time.another filed name is fid int.i am newer.help me

What I have tried:

BEGIN
declare faid int;
insert into member(id,Name,Fname,Gender,Add1,Add2,District,Pincode,Mobile,Email,Occupation,DateofBirth) values(id,name,fname,gender,add1,add2,district,pincode,mobile,email,occupation,dateofbirth);
select faid=MAX(id) from member;
insert into member(fid)values (faid);

END

Posted 20-Dec-16 0:16am

ramesh arunchalam

Updated 20-Dec-16 0:48am

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Afzaal Ahmad Zeeshan · Accepted Answer · 2016-12-20T00:48:00

If you are storing same data to multiple columns, then your data will be inconsistent and you will need to normalize the database[^]. There are many solutions, like using Views to show the data to users and there you can use duplicate data. But inside the tables, the data must be atomic and non redundant.

If your tables are not like this, then even after solving this issue you will stumble upon other errors in future. Database anomalies[^] has a bit more information on what problems this type of structure lead you to.

Your table will also have a lot of NULL values, in first INSERT INTO fid will be null, then in second one, all columns other than fid will be null. What are you doing?