I'm working on a MySQL database and I need to query the database and find out the users with more than one order. I tried using COUNT() but I cannot get it right. Can you please explain the correct way to do this?.
Here are my tables:
User
+-------------+----------+------------------+------------+
| userID | fName | email | phone |
+-------------+----------+------------------+------------+
| adele012 | Adele | aash#gmail.com | 0123948498 |
| ana022 | Anna | ashow#gmail.com | 0228374847 |
| david2012 | David | north#gmail.com | 902849302 |
| jefAlan | Jeffery | jefal#gmail.com | 0338473837 |
| josquein | Joseph | jquein#gmail,com | 0098374678 |
| jweiz | John | jwei#gmail.com | 3294783784 |
| jwick123 | John | jwik#gmail.com | 0998398390 |
| kenwipp | Kenneth | kwip#gmail.com | 0112938394 |
| mathCler | Maththew | matc#gmail.com | 0238927483 |
| natalij2012 | Natalie | nj#gmail.com | 1129093210 |
+-------------+----------+------------------+------------+
Orders
+---------+------------+-------------+-------------+
| orderID | date | User_userID | orderStatus |
+---------+------------+-------------+-------------+
| 1 | 2012-01-10 | david2012 | Delivered |
| 2 | 2012-01-15 | jweiz | Delivered |
| 3 | 2013-08-15 | david2012 | Delivered |
| 4 | 2013-03-15 | natalij2012 | Delivered |
| 5 | 2014-03-04 | josquein | Delivered |
| 6 | 2014-01-15 | jweiz | Delivered |
| 7 | 2014-02-15 | josquein | Delivered |
| 8 | 2015-10-12 | jwick123 | Delivered |
| 9 | 2015-02-20 | ana022 | Delivered |
| 10 | 2015-11-20 | kenwipp | Processed |
+---------+------------+-------------+-------------+
select user_userID, count(*) as orders_count from orders
group by user_userID having orders_count > 1
if you want additional data from your users table, you can do:
select * from user where user_id in (
select user_userID as orders_count from orders
group by user_userID having orders_count > 1
)
Related
I am learning SQL and DB, I need to make the following query, I need to make a query that finds the dates that there were more car crashes and list the names of the people who were involved in these car crashes
person
| name | id_person |
|--------|------------|
| Oliver | 000000001 |
| Harry | 000000002 |
| Jacob | 000000003 |
| Maria | 000000004 |
| Jack | 000000005 |
participated
| id_person | num_crash | cost_damage |
|------------|-------------|---------------|
| 00000001 | 11111101 | 200 |
| 00000002 | 11111102 | 120 |
| 00000003 | 11111102 | 120 |
| 00000004 | 11111103 | 400 |
| 00000005 | 11111104 | 300 |
| 00000002 | 11111105 | 280 |
| 00000005 | 11111106 | 260 |
crash
| num_crash | date_crash | crash_scene |
|-------------|--------------|-------------|
| 11111101 | 2020/04/28 | bairro 4 |
| 11111102 | 2020/05/01 | bairro 1 |
| 11111103 | 2020/05/01 | bairro 2 |
| 11111104 | 2020/05/04 | bairro 3 |
| 11111105 | 2020/05/04 | bairro 1 |
| 11111106 | 2020/05/04 | bairro 3 |
output example
| data_crash | num_crash | name |
|--------------|-------------|-------|
| 2020/05/04 | 11111104 | Jack |
| 2020/05/04 | 11111105 | Harry |
| 2020/05/04 | 11111106 | Jack |
| 2020/05/01 | 11111102 | Harry |
| 2020/05/01 | 11111102 | Jacob |
| 2020/05/01 | 11111103 | Maria |
This is my sql query
CREATE VIEW vwfrequencedatecrash AS
SELECT date_crash, num_crash, crash_scene, ROW_NUMBER() OVER (PARTITION
BY date_crash ORDER BY date_crash) AS frequence
FROM crash
ORDER BY frequence DESC;
CREATE VIEW vwmorefrequencedate AS
SELECT date_crash, num_crash, crash_scene, frequence
FROM vwfrequencedatecrash
WHERE frequence > 1;
SELECT vw.date_crash, pa.num_crash, p.name
FROM vwmorefrequencedate vw
JOIN crash c ON c.date_crash = vw.date_crash
JOIN participated pa ON c.num_crash = pa.num_crash
JOIN person p ON pa.id_person = p.id_person
ORDER BY vw.frequence DESC, c.date_crash;
how can I improve this query?
This is my table with sample data:
Table:PersTrans
+------------+-------------+------+-----+------------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------+-------------+------+-----+------------+-------+
| PersTrID | char(10) | NO | PRI | | |
| PersTrSeq | int(11) | NO | PRI | 0 | |
| PersTrDate | date | YES | | 1001-01-01 | |
| PersTrPaid | float(9,2) | YES | | 0.00 | |
+------------+-------------+------+-----+------------+-------+
mysql> select * from PersTrans;
+------------+-----------+-----------+-------------+
| PersTrID | PersTrSeq | PersTrDate | PersTrPaid |
+------------+-----------+-----------+-------------+
| MOCK | 1 | 2015-10-10 | 400.00 |
| MOCK | 2 | 2017-11-07 | 10.00 |
| NAGA | 1 | 2015-11-11 | 500.00 |
| NASSA | 1 | 2015-12-16 | 800.00 |
+------------+-----------+-----------+-------------+
I'd like to pick up the maximum PersTrSeq, and attach it to all the records that have the same PersTrId. What I want:
+------------+-----------+------------+------------+----------------+
| PersTrID | PersTrSeq | PersTrDate | PersTrPaid | max(PersTrSeq) |
+------------+-----------+-----------+------------+-----------------+
| MOCK | 1 | 2015-10-10 | 400.00 | 2 |
| MOCK | 2 | 2017-11-07 | 10.00 | 2 |
| NAGA | 1 | 2015-11-11 | 500.00 | 1 |
| NASSA | 1 | 2015-12-16 | 800.00 | 1 |
+------------+-----------+-----------+------------+-----------------+
These two attempts didn't work. I've looked for other suggestions but haven't found anything helpful.
mysql> SELECT *, max(PersTrSeq) from PersTrans where PersTransId = 'Mock' group by PersTrSeq;
+------------+-----------+------------+------------+----------------+
| PersTrID | PersTrSeq | PersTrDate | PersTrPaid | max(PersTrSeq) |
+------------+-----------+-----------+------------+-----------------+
| MOCk | 1 | 2015-10-10 | 400.00 | 1 |
| MOCK | 2 | 2017-11-07 | 10.00 | 2 |
+------------+-----------+-----------+------------+-----------------+
mysql> SELECT *, max(PersTrSeq) as maxseq from PersTrans group by PersTrId;
+------------+-----------+------------+------------+--------+
| PersTrID | PersTrSeq | PersTrDate | PersTrPaid | maxseq |
+------------+------------+-----------+------------+--------+
| MOCK | 1 | 2015-10-10 | 400.00 | 2 |
| NAGA | 1 | 2015-11-11 | 500.00 | 1 |
| NASSA | 1 | 2015-12-16 | 800.00 | 1 |
+------------+-----------+-----------+------------+---------+
Can anyone offer a single query that will get the result I'm looking for?
Following query will work:
select *,
(select max(PersTrSeq) from PersTrans p2
where p2.PersTrId = p1.PersTrId
) as maxSeq
from PersTrans p1;
If I understand what you want, you want the same number of records as the actual data, substituting the max(PersTrSeq) for all rows with a certain PersTrID.
SELECT
`PerTrID`,
(SELECT max(`PersTrSeq`) FROM `PersTrans` b WHERE b.`PersTrID = a.`PersTrID`) as `PersTrSeq`,
`PersTrDate`,
`PersTrPaid`,
from `PersTrans` a
I have the following tables:
clients:
| id | name | code | zone |
--------------------------------
| 1 | client 1 | a1b1 | zone1|
| 2 | client 2 | a2b2 | zone2|
contacts:
| id_contact | first_name | last_name |
----------------------------------------
| 11 | first1 | last1 |
| 22 | first2 | last2 |
| 33 | first3 | last3 |
| 44 | first4 | last4 |
client_contacts:
| id_client | id_contact |
--------------------------
| 1 | 11 |
| 1 | 22 |
| 1 | 33 |
| 2 | 11 |
| 2 | 44 |
offers:
| id_offer | id_client | value |
--------------------------
| 111 | 1 | 100 |
| 222 | 1 | 200 |
| 333 | 1 | 300 |
| 444 | 2 | 400 |
I would like through a optimal select to obtain:
| id_client | name | code | zone | contacts_pers | total_offer_value |
----------------------------------------------------------------------------
| 1 | client 1 | a1b1 | zone1 | first1 last1; | 600 |
first2 last2;
first3 last3;
| 2 | client 2 | a2b2 | zone2 | first1 last1; | 400 |
first4 last4;
I know how to get the desired result with "group_concat" and stored procedures for "total_offer_value". But how to get the desired result from a single efficient select?
SELECT c.id, c.name, c.code, c.zone, GROUP_CONCAT(DISTINCT CONCAT(co.first_name, " ", c.last_name) SEPARATOR ";") AS contact_pers, func_total_offer_value(c.id) AS total_offer_value
FROM clients c
LEFT OUTER JOIN (client_contacts cc, contacts co) ON ( c.id = cc.id_client AND cc.id_contact = co.id_contact )
GROUP BY c.id
T1 table
+-----------+------------------+
| cookie_id | impression |
+-----------+------------------+
| 123 | 6/17/15 |
| 123 | 6/18/15 |
| 123 | 6/18/15 |
| 234 | 6/20/15 |
| 234 | 6/22/15 |
+-----------+------------------+
T2 table
+-----------+---------+---------+---------+
| cookie_id | HP | search | book |
+-----------+---------+---------+---------+
| 123 | 6/17/15 | | |
| 123 | 6/18/15 | | |
| 123 | | 6/18/15 | |
| 123 | | | 6/19/15 |
| 234 | 6/23/15 | | |
| 234 | | 6/25/15 | |
| 234 | | | 6/29/15 |
+-----------+---------+---------+---------+
we'd like to join T1 and T2 as the expected result as below T3 table :
+-----------+------------+---------+---------+---------+
| cookie_id | impression | HP | search | book |
+-----------+------------+---------+---------+---------+
| 123 | 6/17/15 | | | |
| 123 | 6/18/15 | | | |
| 123 | 6/18/15 | | | |
| 123 | | 6/17/15 | | |
| 123 | | 6/18/15 | | |
| 123 | | | 6/18/15 | |
| 123 | | | | 6/19/15 |
| 234 | 6/20/15 | | | |
| 234 | 6/22/15 | | | |
| 234 | | 6/23/15 | | |
| 234 | | | 6/25/15 | |
| 234 | | | | 6/29/15 |
+-----------+------------+---------+---------+---------+
http://sqlfiddle.com/#!9/375e6/2
SELECT cookie_id, impression, null,null, null
FROM t1
UNION ALL
SELECT cookie_id, null as impression, hp, search,book
FROM t2
As mentioned in the comment, you seems to want to UNION the tables: This will do it, but it may not be what you really really need...
SELECT * FROM (
(SELECT cookie_id,
"" AS impression,
HP,
search,
book
FROM T1)
UNION
(SELECT cookie_id,
impression,
"" AS HP,
"" AS search,
"" AS book
FROM T2)
) a
ORDER BY cookie_id;
This is out of my head, maybe I made a typo or something.
I have the following query which is pulling through some orders in a database:
SELECT company, amount, total FROM cscart_order_details
INNER JOIN cscart_orders
ON cscart_order_details.order_id = cscart_orders.order_id
WHERE
date(FROM_UNIXTIME(`timestamp`)) >= ADDDATE(DATE(NOW()), INTERVAL -6 DAY)
This produces the following information:
|company | | amount | | total |
================================
| NTE001 | | 1 | | 51.06 |
| NTE001 | | 1 | | 126.76 |
| NTE001 | | 1 | | 126.76 |
| EUR004 | | 1 | | 832.13 |
| EUR004 | | 1 | | 832.13 |
| EUR004 | | 1 | | 832.13 |
| EUR004 | | 1 | | 231.37 |
| EUR004 | | 1 | | 231.37 |
| EUR004 | | 2 | | 263.92 |
| EUR004 | | 1 | | 131.96 |
| B&T001 | | 1 | | 929.83 |
| B&T001 | | 1 | | 929.83 |
How do I go about combine lines? For example I would like to put all lines for the same companies together like this example:
| NTE001 | | 3 | | 304.58 |
| EUR004 | | 7 | | 3223.05 |
| B&T001 | | 2 | | 1859.66 |
EDIT: If you are down voting please let me know how I can improve this question!
so you want something like:
SELECT company,
count(amount) amount,
sum (total) total
FROM cscart_order_details
INNER JOIN cscart_orders
ON cscart_order_details.order_id = cscart_orders.order_id
WHERE date(FROM_UNIXTIME(`timestamp`)) >= ADDDATE(DATE(NOW()), INTERVAL -6 DAY)
GROUP BY company