i have 2 tables (Titles and Episodes).
Table Titles
id | title | type | views
------------------------------
1 | Lucy | movie | 300
2 | Narcos | series | 2600
3 | Ip Man | movie | 120
4 | Creed | movie | 460
Table Episodes
id | title_id | title | episode | views
----------------------------------------------
1 | 2 | episode1 | 1 | 100
2 | 2 | episode2 | 2 | 260
3 | 2 | episode3 | 3 | 96
4 | 2 | episode4 | 4 | 210
Now i use this query to get most viewed episodes.
SELECT titles.id, titles.title, episodes.title_id, episodes.episode, episodes.views FROM titles, episodes WHERE titles.id = episodes.title_id ORDER BY episodes.views DESC LIMIT 0, 16
And i use this query for movies.
SELECT titles.id, titles.title, titles.views WHERE type = 'movie' ORDER BY titles.views DESC LIMIT 0, 16
I want to combine this two last queries into 1 temporary table to show most viewed movies and episodes.
Temporary Table
id | title_id | title | views
----------------------------------------------
1 | 4 | Creed | 460
2 | 1 | Lucy | 300
3 | 2 | Narcos Episode 2 | 260
4 | 2 | Narcos Episode 4 | 210
How can i do that ?
Thank you.
you can use view
see this page to more information
http://dev.mysql.com/doc/refman/5.7/en/create-view.html
I got it, thank you #sagi
(SELECT titles.id as title_id, concat(titles.title,' ',episodes.title) as
title,episodes.views as views
FROM titles, episodes
WHERE titles.id = episodes.title_id and type = 'series'
ORDER BY episodes.views DESC LIMIT 0, 16)
UNION ALL
(SELECT titles.id, titles.title, titles.views as views
FROM titles
WHERE type = 'movie'
ORDER BY titles.views DESC LIMIT 0, 16) ORDER BY views DESC
Related
I have two tables in a database that I would like to combine in a specific way.
Here are the tables:
table: watchhistory
customerid | titleid | rating | date
------------+-----------+--------+------------
1488844 | tt0389605 | 3 | 2005-09-06
1181550 | tt0389605 | 3 | 2004-02-01
1227322 | tt0389605 | 4 | 2004-02-06
786312 | tt0389605 | 3 | 2004-11-16
525356 | tt0389605 | 2 | 2004-07-11
1009622 | tt0389605 | 1 | 2005-01-19
table: media
mediaid | directorid | title | genre | runtime | releasedate
-----------+------------+----------------+----------------------+---------+-------------
tt0090557 | nm0851724 | Round Midnight | [Drama, Music] | 133 | 1986
tt0312296 | nm0146385 | 1 Giant Leap | [Documentary, Music] | 155 | 2002
tt0078721 | nm0001175 | 10 | [Comedy, Romance] | 122 | 1979
tt2170245 | nm3593080 | 10 | [Thriller] | 76 | 2012
tt5282238 | nm6207118 | 10 | [Thriller] | 90 | 2015
tt0312297 | nm0302572 | 10 Attitudes | [Comedy, Drama] | 87 | 2001
I would like to make a table with the following columns:
title (from media) | Views#
I created this query to get the top 10 titleids, meaning the top 10 titles from watchhistory that appear in watchhistory the most times:
SELECT titleid, count(*) as Views FROM watchhistory GROUP BY titleid ORDER BY Views DESC limit 10;
titleid | views
------------+-------
tt7631348 | 1307
tt14627576 | 1065
tt8372506 | 1063
tt5793632 | 1056
tt1403008 | 1053
tt7825602 | 1051
tt6840954 | 1046
tt12780424 | 1042
tt7266106 | 1036
tt6539274 | 1035
The goal is to essentially replace this titleid column (from watchhistory) with the title (from media). I tried using joins between the watchhistory.titleid and media.mediaid with no luck.
What SQL query do I need to get this desired table?
Thanks in advance.
You need to INNER JOIN to your media table on mediaid:
SELECT m.title, count(wh.*) as Views
FROM watchhistory wh
INNER JOIN media m on m.mediaid = wh.titleid
GROUP BY m.mediaid
ORDER BY Views DESC LIMIT 10;
To see what the select and join are doing, you can simplify it:
SELECT m.*, wh.*
FROM watchhistory wh
INNER JOIN media m on m.mediaid = wh.titleid
The result will be a joined 'table' that has the two tables combined on the mediaid/titleid.
I have 2 tables (person + person_products)
where each person has at least 1 product.
Sample person table:
person_id | name
------------------
1 | Alice
2 | Peter
3 | James
Sample person_products table:
id | person_id | description | price
------------------------------------
1 | 1 | iphone 5 | 100
2 | 1 | iphone 6 | 200
3 | 1 | samsung | 300
4 | 2 | tv | 110
5 | 3 | oven | 250
6 | 3 | microwave | 260
I want to do the following:
SELECT p.person_id,
some_concat_product_descriptions,
some_concat_product_prices
FROM person p
LEFT JOIN person_products p on p.person_id = pp.person_id
Expected result:
person_id | concat_product_descriptions | concat_product_prices
---------------------------------------------------------------
1 | iphone 5, iphone 6, samsung | 100, 200, 300
2 | tv | 110
3 | oven, microwave | 250, 260
How can I achieve this?
Use group_concat
SELECT p.person_id,
group_concat(pp.description order by pp.description) as concat_product_descriptions,
group_concat(pp.price order by pp.description) as concat_product_prices
FROM person p
LEFT JOIN person_products pp on p.person_id = pp.person_id
GROUP BY p.person_id
Use group_concat aggregation function. A join is is not needed at all.
select
person_id,
group_concat(description) separator ', ' as concat_product_descriptions,
group_concat(price) separator ', ' as concat_product_prices
group by
person_id
Imagine this tables:
| USER |
|------|
| _id |
| PHOTO |
|-------|
| _id |
| user | - who uploaded it
| RATING |
|--------|
| user | - who vote
| photo | - for which foto
And then I need to extract All photos uploaded by $user And on top of that, what rating the photo has...
for example:
USER
1
PHOTO
50 | 1
51 | 1
52 | 1
RATING
2 | 50
3 | 51
2 | 51
2 | 52
4 | 51
3 | 50
My Expected result for function get_info($id):
$id = 1;
result:
_id | rating
50 | 2
51 | 3
52 | 1
Is there possible one task sql ? thanks
Use join and count with group by
select p._id,count(distinct r.user)
from photo p
join rating r on(p._id=r.photo)
where p.user = 1
group by p._id
Since your photo table has an association with rating table as _id is related to the photo column of rating table so join them, then count each distinct user for each photo
Demo
I have one report page which displays summarized data of other report.I have used php and mysqli. Let me explain you in deep.
I have a web application of store, where you can add product details. Using these product details you can generate packaging list report of products. And based on the generated packaging list report I need to generate one other report which contains summarized data of the packaging list.
below are my tables:
product table:
id | name | desc_id | purity | style_no | type | duty
1 | ABC | 1 | 18 | TEST123 | R | 100
2 | XYZ | 2 | 14 | TEST456 | B | 80
3 | DEF | 1 | 14 | TEST122 | R | 80
4 | PQR | 1 | 18 | TEST124 | R | 120
5 | HJK | 3 | 18 | TEST134 | B | 300
Description table:
id | descrip
1 | Gold Diamond Ring
2 | Gold Diamond Pendant
3 | Gold Diamond Earring
packaging_master table
id | name
1 | pkg_1
2 | pkg_2
packging_details table
id | pkg_id | prod_id
1 | 1 | 1
2 | 1 | 2
3 | 1 | 3
4 | 1 | 4
5 | 1 | 5
I have used below query to generate the packaging list report for specific id, which works correctly.
SELECT id, (SELECT descrip FROM description WHERE id = desc_id ) AS descrip,
style_no, type , purity, duty FROM product WHERE id IN ( SELECT prod_id FROM packaging_list_details WHERE pkg_id =1 ) ORDER BY descrip ASC , purity ASC
which displays below result:
id | descrip | style_no | type | purity | duty
1 |Gold Diamond Ring | TEST123 | R | 18 | 100
4 |Gold Diamond Ring | TEST124 | R | 18 | 120
3 |Gold Diamond Ring | TEST122 | R | 14 | 80
2 |Gold Diamond Pendant| TEST456 | B | 14 | 80
5 |Gold Diamond Earring| TEST134 | B | 18 | 300
Now I want summarized data of above result using query.
Like:
id | descrip | purity | qty | duty
1 |Gold Diamond Ring | 18 | 2 | 220
2 |Gold Diamond Ring | 14 | 1 | 80
3 |Gold Diamond Pendant| 14 | 1 | 80
4 |Gold Diamond Earring| 18 | 1 | 300
How can I achieve this?
You need to use the GROUP_BY statement - See MySql docs for more info.
This will translate the query to such
SELECT d.descrip, p.purity, count(p.purity) as qty, sum(p.duty)
FROM product p
INNER JOIN Description d ON p.desc_id = d.id
LEFT OUTER JOIN packaging_details pg on pg.prod_id = p.id
GROUP BY d.descrip, p.purity
ORDER BY d.descrip desc, p.purity desc
You can also use the sub select methodology you were using, but I prefer using joins. INNER JOIN will link both tables so that all their records are returned. OUTER JOIN will return all rows from the tables on the LEFT of the statement and matches them to values from the tables on the RIGHT.
See a full SQL Fiddle sample.
NOTE: I am not sure where you are getting the values for Id in your sample - Are they simply row numbers?
I think you should rewrite your query using JOINs:
SELECT
P.id
,D.descrip
,P.style_no
,P.type
,P.purity
,P.duty
FROM
packaging_list_details PLD
JOIN
product P ON
(P.id = PLD.prod_id)
LEFT JOIN
description D on
(D.desc_id = P.id)
WHERE
(PLID.pkg_id = 1)
That should give you the same result you already have. To get the totals, you can write a new query, similar to the above:
SELECT
P.id
,D.descrip
,P.type
,P.purity
,COUNT(p.id) as total_products
,SUM(P.duty) as total_duty
FROM
packaging_list_details PLD
JOIN
product P ON
(P.id = PLD.prod_id)
LEFT JOIN
description D on
(D.desc_id = P.id)
WHERE
(PLID.pkg_id = 1)
GROUP BY
P.id
,D.descrip
,P.type
,P.purity
The second query gives you the totals you are looking for.
I'm having trouble coming up with a query that returns the player's id, name along with the player's first match date, matchid and opponent.
I want the same information for player's last match as well.
`players`
id | name
1 | playername10
2 | playername22
3 | playername33
4 | playername45
5 | playername55
`matches`
id | gamedate | opponent
1 | 2011-01-01 | opponent1
2 | 2011-01-02 | opponent2
3 | 2011-01-03 | opponent3
4 | 2011-01-04 | opponent4
5 | 2011-01-05 | opponent5
`playermatchscores`
id | matchid | player | goals
1 | 1 | playername10 | 1
2 | 1 | playername22 | 2
3 | 2 | playername10 | 1
4 | 1 | playername33 | 1
5 | 3 | playername45 | 2
6 | 4 | playername55 | 1
7 | 2 | playername55 | 1
8 | 3 | playername22 | 2
9 | 5 | playername55 | 1
Where matchid is a foreign key to the id in table matches.
I tried several queries but I may be approaching it the the wrong way. How can I write a way to get the information I want?
Information about LEFT JOIN: http://www.w3schools.com/sql/sql_join_left.asp
SELECT players.id, MAX(matches.gamedate) AS first_match, MIN(matches.gamedate) AS last_match
FROM playermatchscores
LEFT JOIN players ON players.player = playermatchscores.player
LEFT JOIN matches ON matches.id = playermatchscores.matchid
GROUP BY players.player
I haven't tested this select.
P.S. You should use foreign key for players table too with player_id in playermatchscores.
After the changes in question:
SELECT players.*, matches.*,
FROM playermatchscores
LEFT JOIN players ON players.name = playermatchscores.player
LEFT JOIN matches ON matches.id = playermatchscores.matchid
ORDER BY matches.gamedate ASC
WHERE players.id = 3
LIMIT 1
For the last match replace ASC with DESC.
P.S. This is not the best way to do it but it should work.