Question

I am using an INSERT ALL statement in Oracle to insert data into two different tables. The data is coming from a rather complex subquery rather than a VALUES clause.

My issue is that I don’t want to insert all the columns returned by the subquery into both tables.

As a simple example, suppose I have two tables tab1 and tab2 each containing three columns col1, col2 and col3.

Now suppose my subquery returns a single row with the values A, B and C.

So, I want A, B and C inserted into col1, col2 and col3 of tab1 respectively, but I want, say, only A and C to go into col1 and col3 of tab2.

My statement would look something like this:

INSERT ALL
INTO tab1
  (col1, col2, col3)
INTO tab2
  (col1, ?, col3)
FROM
( ...
 complex subquery which returns A, B, C
  ...
)

Is there a way I can use some sort of a ‘filler’ or ‘garbage column’ to allow me to achieve my objective?

Answer 1

Yes:

INSERT ALL
INTO tab1
  (col1, col2, col3) values (a, b, c)
INTO tab2
  (col1, col3) values (a, c)
SELECT a, b, c
FROM
( ...
 complex subquery which returns A, B, C
  ...
)