如何在其值来自另一个表的位置插入新列？

Question

I have 2 different table (Table A and Table B).

Table A looks like this: enter image description here

Table B looks like this: enter image description here

I want to insert new column referred to productname in Table A, which its value based on productname in Table B.

How I can write the syntax?

Answer 1

I think what you need is to join the tables like this:

Select A.userid,
       A.itemid,
       A.insurance_amount,
       A.productid,
       B.productname
From A
Join B ON B.productid = A.productid