Posts Tagged with mysql count

Displaying 1-2 of 2 results.
Not Resolved: MySQL count where columns fields have same value
posted by admin on November 1, 2016
I have rows, and I want count my select with criteria IN and want to count rows, which is having same values for all rows
Example:

id name lastname age
1 Abc defghij 12
2 Def asdasd 15
3 Ghi qwewqeq 18
4 Abc zzzzz 12
5 Abc yyy 12
6 Abc uuuu 12

IN array

1, 4, 5, 6

Same fields:

`name`, `age`

I want to see RESULTS LIKE
Result SELECT:

id name lastname age
1 Abc defghij 12
4 Abc zzzzz 12
5 Abc yyy 12

Result SELECT COUNT(*):

3
Read more
Resolved: MySQL - Count Number of Unique Values
posted by admin on May 21, 2016
If I have three columns:

orderNumber, name, email

and I would like to count how many unique emails are in the table how would I go about doing so?

A statement like:

SELECT count(email) FROM orders

gives me the total count.
I tried

SELECT DISTINCT count(email) FROM orders

but that does not seem to be giving me the numbers I am expecting.Read more