Mysql – Get 2 counts in single query

aggregategroup byMySQLmysql-5.5

I need to get count of 2 columns with group by

This is my sample data

I need to get count of persons from particular state and count of persons from particular country

My output should be like

I need to manipulate data like this; how to create query for this

Best Answer

SELECT country, 
       COUNT(state) total,
       SUM(state='xxx') xxx,
       SUM(state='yyy') yyy,
       SUM(state='zzz') zzz
FROM table
GROUP BY country

PROPOSED QUERY

SELECT
    IFNULL(Hour,CONCAT('Total for ',IFNULL(Country,'All Countries'))) Statistic,
    COUNT(1) TotalHits
FROM
(
    SELECT Country,(time - INTERVAL MOD(UNIX_TIMESTAMP(time),3600) SECOND) Hour
    FROM hits WHERE time >= (DATE(NOW()) + INTERVAL 0 SECOND)
) AA
GROUP BY Country,Hour WITH ROLLUP;

YOUR SAMPLE DATA

USE test
DROP TABLE IF EXISTS hits;
CREATE TABLE hits
(
    id int not null auto_increment,
    time datetime,
    country varchar(20),
    PRIMARY KEY (id)
);
INSERT INTO hits (time,Country) VALUES
('2014-06-19 01:00:00','France'),
('2014-06-19 01:00:00','Brazil'),
('2014-06-19 01:00:00','USA'),
('2014-06-19 02:00:00','USA');

YOUR SAMPLE DATA LOADED

mysql> USE test
Database changed
mysql> DROP TABLE IF EXISTS hits;
Query OK, 0 rows affected (0.01 sec)

mysql> CREATE TABLE hits
    -> (
    ->     id int not null auto_increment,
    ->     time datetime,
    ->     country varchar(20),
    ->     PRIMARY KEY (id)
    -> );
Query OK, 0 rows affected (0.01 sec)

mysql> INSERT INTO hits (time,Country) VALUES
    -> ('2014-06-19 01:00:00','France'),
    -> ('2014-06-19 01:00:00','Brazil'),
    -> ('2014-06-19 01:00:00','USA'),
    -> ('2014-06-19 02:00:00','USA');
Query OK, 4 rows affected (0.00 sec)
Records: 4  Duplicates: 0  Warnings: 0

mysql> SELECT * FROM hits;
+----+---------------------+---------+
| id | time                | country |
+----+---------------------+---------+
|  1 | 2014-06-19 01:00:00 | France  |
|  2 | 2014-06-19 01:00:00 | Brazil  |
|  3 | 2014-06-19 01:00:00 | USA     |
|  4 | 2014-06-19 02:00:00 | USA     |
+----+---------------------+---------+
4 rows in set (0.00 sec)

mysql>

PROPOSED QUERY EXECUTED

mysql> SELECT
    ->     IFNULL(Hour,CONCAT('Total for ',IFNULL(Country,'All Countries'))) Statistic,
    ->     COUNT(1) TotalHits
    -> FROM
    -> (
    ->     SELECT Country,(time - INTERVAL MOD(UNIX_TIMESTAMP(time),3600) SECOND) Hour
    ->     FROM hits WHERE time >= (DATE(NOW()) + INTERVAL 0 SECOND)
    -> ) AA
    -> GROUP BY Country,Hour WITH ROLLUP;
+-------------------------+-----------+
| Statistic               | TotalHits |
+-------------------------+-----------+
| 2014-06-19 01:00:00     |         1 |
| Total for Brazil        |         1 |
| 2014-06-19 01:00:00     |         1 |
| Total for France        |         1 |
| 2014-06-19 01:00:00     |         1 |
| 2014-06-19 02:00:00     |         1 |
| Total for USA           |         2 |
| Total for All Countries |         4 |
+-------------------------+-----------+
8 rows in set (0.00 sec)

mysql>

I'll leave the formatting to you :-)

CAVEAT: Please make sure you have a time index on the table

ALTER TABLE hits ADD INDEX time_index (time);

An additional query could be

SELECT
    IFNULL(Country,CONCAT('Total for ',IFNULL(Hour,DATE(NOW())))) Statistic,
    COUNT(1) TotalHits
FROM
(
    SELECT Country,(time - INTERVAL MOD(UNIX_TIMESTAMP(time),3600) SECOND) Hour
    FROM hits WHERE time >= (DATE(NOW()) + INTERVAL 0 SECOND)
) AA
GROUP BY Hour,Country WITH ROLLUP;

whose output would be

+-------------------------------+-----------+
| Statistic                     | TotalHits |
+-------------------------------+-----------+
| Brazil                        |         1 |
| France                        |         1 |
| USA                           |         1 |
| Total for 2014-06-19 01:00:00 |         3 |
| USA                           |         1 |
| Total for 2014-06-19 02:00:00 |         1 |
| Total for 2014-06-19          |         4 |
+-------------------------------+-----------+
7 rows in set (0.00 sec)

UPDATE 2014-06-21 19:07 EDT

Perhaps the the two queries combined with UNION will work for you

SELECT
    IFNULL(Country,CONCAT('Total for ',IFNULL(Hour,DATE(NOW())))) Statistic,
    COUNT(1) TotalHits
FROM
(
    SELECT Country,(time - INTERVAL MOD(UNIX_TIMESTAMP(time),3600) SECOND) Hour
    FROM hits WHERE time >= (DATE(NOW()) + INTERVAL 0 SECOND)
) AA
GROUP BY Hour,Country
UNION
SELECT
    IFNULL(Hour,CONCAT('Total for ',IFNULL(Country,'All Countries'))) Statistic,
    COUNT(1) TotalHits
FROM
(
    SELECT Country,(time - INTERVAL MOD(UNIX_TIMESTAMP(time),3600) SECOND) Hour
    FROM hits WHERE time >= (DATE(NOW()) + INTERVAL 0 SECOND)
) AA
GROUP BY Country,Hour WITH ROLLUP;

I removed the WITH ROLLUP from the first one so that the total comes out once

MySQL Group By – Fetch Data Using Two Group By Clauses

SELECT
    SUM(IF(user_type='I',1,0)) Individual_Count,
    SUM(IF(user_type='G',1,0)) Group_Count,
    DATE_FORMAT(dt,'%M')       "Month"
FROM
(
    SELECT user_type,
    (MAKEDATE(YEAR(join_date),1) + INTERVAL (MONTH(join_date)-1) MONTH) dt
    FROM consultant WHERE join_date >= '2014-07-01 00:00:00'
) A GROUP BY dt;

SELECT
    SUM(user_type='I')   Individual_Count,
    SUM(user_type='G')   Group_Count,
    DATE_FORMAT(dt,'%M') "Month"
FROM
(
    SELECT user_type,
    (MAKEDATE(YEAR(join_date),1) + INTERVAL (MONTH(join_date)-1) MONTH) dt
    FROM consultant WHERE join_date >= '2014-07-01 00:00:00'
) A GROUP BY dt;

If you would like the counts summed up, include WITH ROLLUP

SELECT
    SUM(IF(user_type='I',1,0)) Individual_Count,
    SUM(IF(user_type='G',1,0)) Group_Count,
    IFNULL(DATE_FORMAT(dt,'%M'),'Total') "Month"
FROM
(
    SELECT user_type,
    (MAKEDATE(YEAR(join_date),1) + INTERVAL (MONTH(join_date)-1) MONTH) dt
    FROM consultant WHERE join_date >= '2014-07-01 00:00:00'
) A GROUP BY dt WITH ROLLUP;

SELECT
    SUM(user_type='I')   Individual_Count,
    SUM(user_type='G')   Group_Count,
    IFNULL(DATE_FORMAT(dt,'%M'),'Total') "Month"
FROM
(
    SELECT user_type,
    (MAKEDATE(YEAR(join_date),1) + INTERVAL (MONTH(join_date)-1) MONTH) dt
    FROM consultant WHERE join_date >= '2014-07-01 00:00:00'
) A GROUP BY dt WITH ROLLUP;