Merge pull request Cheatsheet-lang#8 from Hemshree/master

AnuragAnalog · web-flow · commit 7445496d1bcc · 2021-10-08T21:02:29.000+05:30
Added more Queries
diff --git a/README.md b/README.md
@@ -282,6 +282,21 @@ select * from employee where salary > 3000 and salary < 4000;
 select * from employee where salary between 3000 and 4000;
 ```
 
+#### Null
+```sql
+select * from employee where salary is NULL;
+```
+
+#### Not null
+```sql
+select * from employee where salary is NOT NULL;
+```
+
+### ORDER BY Clause
+```sql
+select * from employee ORDER BY salary DESC;
+```
+
 #### Like Operator
 ```sql
 select * from employee where name like '%Jo%';          -- Similar to *Jo* in regrex
