Question

I have 2 tables

Table 1:

DB1, DB2, DB3, DB4, DB5, Some other identifiers

Table 2:

EnumText, EnumValue, Some other identifiers

What I want to do is to:-

1. Select data from Table 1
2. During Select, change the alias of columns DB1 to DB5 using the Data in Table 2’s EnumText column where EnumValue will contain DB1 to DB5.

A sample command would be:

Select 
    DB1 as [Select EnumText from Table2 where EnumValue='DB1'], 
    DB2, DB3 
from Table1

This command won’t work but I hope you people got the idea.

Thank you in advance.

Answer 1

You can’t have dynamic aliases without dynamic SQL. If you did change the resultset column names, how do you access them via name? (I wouldn’t use index because it will break)

So, you can add a fixed column to describe it. And read that

Select 
    DB1, foo.EnumText AS DB1EnumText, 
    DB2, 
    DB3 
from 
    Table1
    CROSS JOIN
    (Select EnumText from Table2 where EnumValue='DB1') foo