SQLite: Is there any way to assign an Alias to the "Where" clause and not have to repeat it many times?

I have the following table structure:

Table: Table1

Columns: Entry, Tag1, Tag2, Tag3, Tag4.

(Entry is the row number, i.e. 1, 2, 3, etc.)

If I want to combine all tags into 1 in a single query, I'd do the following:

Select Tag1 FROM Table1 
UNION ALL 
Select Tag2 FROM Table1 
UNION ALL 
Select Tag3 FROM Table1 
UNION ALL 
Select Tag4 FROM Table1;

But let's say I want to do the above query but only on the entries where Entry is between 100 and 200, I'd use the following code:

Select Tag1 FROM Table1 
  WHERE Entry >= 100 AND Entry <= 200 
UNION ALL 
Select Tag2 FROM Table1  
  WHERE Entry >= 100 AND Entry <= 200 
UNION ALL 
Select Tag3 FROM Table1  
  WHERE Entry >= 100 AND Entry <= 200 
UNION ALL 
Select Tag4 FROM Table1 
  WHERE Entry >= 100 AND Entry <= 200;

Is there any way I can simply the second query without repeating "WHERE Entry >= 100 AND Entry <= 200" so many times? In other words, if I had to do the same sort of operation but had 100 columns of tags that I need to combine into a single column and has to be between 2 distinct entries in a table, is it possible to shorten the query significantly?