MySQL query to get hour wise records

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hi.,

i have a table in MySQL having 3 columns called Name,Number,DateInserted. In DateInserted column i m inserting the date and time. now i want to get the records inserted by every hour means in the following format

FromHour - ToHour - counts
11 - 12 - 358

10 - 11 - 55

9 - 10 - 112

8 - 9 - 15

7 - 8 - 856

6 - 7 - 558

5 - 6 - 556

4 - 5 - 458

3 - 4 - 741

2 - 3 - 125

1 - 2 - 789

0 - 1 - 856

thanks to ALL..

..

Posted 26-Sep-12 21:31pm

Jagadish M Vadavatti

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**Zoltán Zörgő** · Answer 1 · 2012-09-26T22:05:00

Solution 1

here is a HOUR[^] function in MySQL. You can use it as GROUP field, like this:

SQL

select HOUR(DateInserted) as FromHour, count(*) from tabelname where ...
group by HOUR(DateInserted)

As HOUR will give you 1 from 1:00 till 1:59, you yous have to add 1 to get ToHour.

Posted 26-Sep-12 22:05pm

Zoltán Zörgő

Updated 26-Sep-12 22:07pm

v2

Comments

Mohibur Rashid 27-Sep-12 4:26am

This one is better than mine

Mohibur Rashid · Answer 2 · 2012-09-26T22:25:00

This is an example for you, rest is upto you

SQL

create table def(d DATETIME);
    -> insert into def values
    -> ('2012-01-02 12:10:11'),
    -> ('2012-01-02 12:12:11'),
    -> ('2012-01-02 01:12:11'),
    -> ('2012-01-02 01:32:11');
SELECT COUNT(*) FROM def GROUP BY MID(d, 1, 13);

Find out rest by yourself