SQLite COUNT() with HAVING Clause

SQLite COUNT

The function COUNT() is an aggregate function that returns the total number of items in a group based on the condition written and it also counts the null values if you do not specify the column name inside the count function....

Aggregate Function

In DBMS, an aggregate function is a function where the values of the single column and multiple row values are processed together to form a single summation value. The aggregate functions are SUM(), COUNT(), MAX(), MIN(), and so on. All aggregate functions are used for the different operations....

SQLite COUNT() with Distinct Function

It counts only the unique and non-null values. Unique values are nothing but the not repeated values....

SQLite COUNT (*)

Count (*) functionality is used to count all the rows from the table that you have chosen....

SQLite COUNT() with WHERE Clause

In SQLite, we use the WHERE clause with the Count() function to get the number of items that exist in a table based on the where expression. Basically, we used the WHERE Clause to apply the conditions on the operations....

SQLite COUNT() with GROUP BY Clause

The GROUP BY clause groups all records for each column that we need and then the count() function in conjunction with GROUP BY counts the number of records for each column name that we want to count....

SQLite COUNT() with HAVING Clause

In the Having clause, we will specify the condition and based on that the result displayed. Having clause works on the group by clause and the conditions are applied to the groups that are created by group by clause....

Conclusion

After reading the whole article, we have good understanding of SQLite COUNT() Functions. We also have seen some examples with the COUNT() like Count with Group By, Having and WHERE Clause. We have also checked that the COUNT() Function can count the NULL value or not?...