Why would someone use WHERE 1=1 AND in a SQL clause?

Question

Why would someone use WHERE 1=1 AND in a SQL clause (Either SQL obtained through concatenated strings, either view definition)

I\'ve

Answer 1

Indirectly Relevant: when 1=2 is used:

CREATE TABLE New_table_name 
as 
select * 
FROM Old_table_name 
WHERE 1 = 2;

this will create a new table with same schema as old table. (Very handy if you want to load some data for compares)