SQL How to write a NOT LIKE instruction

Question

SELECT * FROM [Table] WHERE (Izdava NOT LIKE NULL) 

// how to check if Izdava is NULL

Answer 1

This should work:

 SELECT * FROM [Table] WHERE Izdava IS NOT NULL 

Answer 2

 SELECT * FROM [Table] WHERE (Izdava IS NOT NULL) 

Answer 3

I think this is what you want.

 SELECT * FROM [Table] WHERE Izdara Is Not NULL 

NULL Information from MSDN :

The following is error information:

To check for null values ​​in a query, use NULL or IS NOT NULL in WHERE.

Answer 4

LIKE NULL makes no sense. It does not make sense. LIKE is used to compare a partial string using wildcards or a complete string without wildcards.

Depending on the DBMS, you should NOT have NULL,

 SELECT * FROM [Table] WHERE (NOT Izdava IS NULL) 

Answer 5

If you are checking for null, do not use a similar clause. Just write

 select * from tablename where columnmame is not null 

Answer 6

If it is MSSQL or Oracle, do the following:

 SELECT * FROM [Table] WHERE Izdava IS NOT NULL