Browsed (googled) around with this question but could not find a definitive answer...
I have 20 columns containing numbers. All numbers are unique in row.
How can I find all the rows containing single value, that can be in any of the 20 columns?
This far I have only seen solutions like
WHERE col1=1 OR col2=1 OR col3...
While I can produce these queries without breaking a sweat with code, in my eternal quest for knowledge and more elaborate (efficient) solutions I present my question to you: Really, no other way than the one mentioned above?
Thanks for any input!