Question

Example Table (Person_data)

Name   |   Area      |   Id
=============================== 
Jack   | A_102       |  102   
Roy    | Abc-34      |  109   
tom    | ABC6778     |  107    
Aly    | hj23        |  122   
Saly   | dsfds       |  342

I need a query such that it returns all the rows where Area column doesn’t contain _ or - or Abc or ABC.

My query

Select * from Person_data 
where area not like '%-%' 
or area not like '%_%' 
or area not like '%Abc%' 
or area not like '%ABC%';

Answer 1

returns all the rows where Area column doesn’t contain ‘_’ or ‘-‘ or
‘Abc’ or ‘ABC’

You need to combine these search conditions with AND‘s, but the problem is the _ which is a a reserved wildcard in the LIKE predicate. You have to escape it in the LIKE predicate using [] or you can determine any escape character to use to escape it using the ESCAPE keyword something like LIKE '%\_%' ESCAPE '\', therefore it will treated like a literal, and it is the standard way to that like so:

SELECT * 
FROM PersonData
WHERE area NOT LIKE '%-%'
AND area NOT LIKE '%\_%' ESCAPE '\'
AND area NOT LIKE '%Abc%' 
AND area NOT LIKE '%ABC%';

Here is a SQL Fiddle demo