[Solved] Selecting the right column

Question

Both. In some rows, t2.number is number and in others t3.number is number.

The result of the union all in a single result set. The result set doesn’t know the origin of the values in any particular column (although you could include another column with this information).

Accepted Answer

Both. In some rows, t2.number is number and in others t3.number is number.

The result of the union all in a single result set. The result set doesn’t know the origin of the values in any particular column (although you could include another column with this information).