I have a table accounts with columns ip_from, ip_to, start_time, end_time, bytes.
There is a second table called all_audit with columns project, ip, time.
I need to join the tables in order to get a resulting table with columns for project, time and bytes.
Things that need to be considered are that time only matches with records which fall between start_time and end_time. ip can match either ip_from or ip_to.
The schema for the two tables are:
accounts
+----------------+---------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------------+---------------------+------+-----+---------+-------+
| ip_from | char(15) | NO | PRI | NULL | |
| ip_to | char(15) | NO | PRI | NULL | |
| bytes | bigint(20) unsigned | NO | | NULL | |
| start_time | datetime | NO | PRI | NULL | |
| end_time | datetime | YES | | NULL | |
+----------------+---------------------+------+-----+---------+-------+
all_audit
+-----------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-----------+------------------+------+-----+---------+----------------+
| id | int(10) unsigned | NO | PRI | NULL | auto_increment |
| project | varchar(255) | YES | | NULL | |
| ip | varchar(32) | YES | MUL | NULL | |
| time | timestamp | YES | | NULL | |
+-----------+------------------+------+-----+---------+----------------+
result
+-----------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-----------+------------------+------+-----+---------+----------------+
| project | varchar(255) | YES | | NULL | |
| time | timestamp | YES | | NULL | |
| bytes | bigint(20) unsigned| NO | | NULL | |
+-----------+------------------+------+-----+---------+----------------+
I know it will be a join but I just don’t know where to start. Pointers will be very helpful as I am not that competent yet in sql statements but willing to learn.
I suspect you are looking for something like this:
SELECT aa.project
, aa.time
, a.bytes
FROM all_audit aa
JOIN accounts a
on (aa.ip = a.ip_from OR aa.ip = a.ip_to)
AND aa.time BETWEEN a.start_time AND a.end_time
Related
I have two tables - students and evidence - and I'm trying to check for a corresponding value in one column in evidence, grouped by another column in evidence for every entry in students
These are what the tables look like:
> desc students;
+------------+---------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+---------------------+------+-----+---------+----------------+
| id | bigint(20) unsigned | NO | PRI | NULL | auto_increment |
| firstname | varchar(191) | NO | | NULL | |
| surname | varchar(191) | NO | | NULL | |
| class_id | int(11) | NO | | NULL | |
| dob | datetime | NO | | NULL | |
| enrollment | datetime | NO | | NULL | |
| created_at | timestamp | YES | | NULL | |
| updated_at | timestamp | YES | | NULL | |
+------------+---------------------+------+-----+---------+----------------+
> desc evidence;
+---------------+------------------------------------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+---------------+------------------------------------------------+------+-----+---------+----------------+
| id | bigint(20) unsigned | NO | PRI | NULL | auto_increment |
| type | enum('written','image','audio','video','link') | YES | | NULL | |
| mime | varchar(191) | YES | | NULL | |
| path | varchar(191) | YES | | NULL | |
| user_id | int(11) | NO | | NULL | |
| date_recorded | datetime | YES | | NULL | |
| statement_id | int(11) | NO | | NULL | |
| progress | int(11) | NO | | NULL | |
| notes | mediumtext | YES | | NULL | |
| student | int(11) | NO | MUL | NULL | |
| created_at | timestamp | YES | | NULL | |
| updated_at | timestamp | YES | | NULL | |
+---------------+------------------------------------------------+------+-----+---------+----------------+
Entries in the evidence table are associated with a student (evidence.student_id) and an evidence statement (evidence.statement_id) and then given a progress value of 1 (in progress) or 2 (complete).
I want to be able to check that for each statement_id every student has at least one row with the progress entry set to 2. Ideally I'd like to GROUP BY statement_id and only return a value of 2 for progress if every student has at least one row in the evidence table for that statement_id where progress has been set to 2.
The goal is to list all of the statement_ids where everyone in a class has completed the task (and therefore had some evidence added with progress set to complete).
I've tried doing joins similar to this
SELECT * FROM students left join evidence ON students.id = evidence.student GROUP BY evidence.statement_id HAVING progress = 2;
but the problem there is that if one student is marked as completing a statement_id but another student doesn't have any entries for that statement_id then progress will return 2. I'd rather it just returned NULL for the student without any entries.
I'm pretty stumped on this one to any help is greatly appreciated.
I have two databases.
One is called INFO with three tables (Stories, Comments, Replies)
Stories has the following fields
+--------------+----------------+------+-----+---------------------+-----------------------------+
| Field | Type | Null | Key | Default | Extra |
+--------------+----------------+------+-----+---------------------+-----------------------------+
| storyID | int(11) | NO | PRI | NULL | |
| originalURL | varchar(500) | YES | | NULL | |
| originalDate | timestamp | NO | | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
| numDiggs | int(11) | YES | | NULL | |
| numComments | int(11) | YES | | NULL | |
| diggURL | varchar(500) | YES | | NULL | |
| rating | varchar(50) | YES | | NULL | |
| title | varchar(200) | YES | | NULL | |
| summary | varchar(10000) | YES | | NULL | |
| uploaderID | varchar(50) | YES | | NULL | |
| imageURL | varchar(500) | YES | | NULL | |
| category1 | varchar(50) | YES | | NULL | |
| category2 | varchar(50) | YES | | NULL | |
| uploadDate | timestamp | NO | | 0000-00-00 00:00:00 | |
| num | int(11) | YES | | NULL | |
+--------------+----------------+------+-----+---------------------+-----------------------------+
Another database is called Data with one table (User). Fields shown below:
+-------------------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------------------+-------------+------+-----+---------+-------+
| userID | varchar(50) | NO | PRI | NULL | |
| numStories | int(11) | YES | | NULL | |
| numComments | int(11) | YES | | NULL | |
| numReplies | int(11) | YES | | NULL | |
| numStoryDiggs | int(11) | YES | | NULL | |
| numCommentReplies | int(11) | YES | | NULL | |
| numReplyDiggs | int(11) | YES | | NULL | |
| numStoryComments | int(11) | YES | | NULL | |
| numStoryReplies | int(11) | YES | | NULL | |
+-------------------+-------------+------+-----+---------+-------+
User.userID is full of thousands of unique names. All other fields are currently NULL. The names in User.userID correspond to the names in Stories.uploaderID.
I need to, for each userID in User, count the number of stories uploaded from (i.e. num) Stories for the corresponding name and insert this value into User.numStories.
The query which I have come up with (which produces an error) is:
INSERT INTO DATA.User(numStories)
SELECT count(num)
FROM INFO.Stories
WHERE INFO.Stories.uploaderID=DATA.User.userID;
The error I get when running this query is
Unknown column 'DATA.User.userID' in 'where clause'
Sorry if this is badly explained. I will try and re-explain if need be.
You aren't creating new entries in the User table, you're updating existing ones. Hence, insert isn't the right syntax here, but rather update:
UPDATE DATA.User u
JOIN (SELECT uploaderID, SUM(num) AS sumNum
FROM INFO.Stories
GROUP BY uploadedID) i ON i.uploaderID = u.userID
SET numStories = sumNum
EDIT:
Some clarification, as requested in the comments.
The inner query sums the num in Stories per uploaderId. The updates statement updates the numStories in User the the calculated sum of the inner query of the matching id.
I have three tables, emails, person_details and data_providers. Basically all of my users id, email, and current assigned data_providers_id are stored in the emails table.
The second table, person_details contains demographic information collected by multiple data providers, each row identified by an emails_id that is relational to the emails.id data_providers_id that is relational to the third table data_providers.id
The third table, data_providers contains each of my data providers id, name, and precedence.
Basically, a users information could be collected from multiple sources, and I need to UPDATE emails set data_providers_id = based on a select that would JOIN the person_details table and the data_providers table sorting by data_providers.precedence DESC then person_details.import_date ASC and use the first value (highest precedence, then oldest import_date).
I was trying to build the query, but my subquery is returning more than one row. This query is a little over my head, hoping someone more experienced with complex queries might be able to point me in the right direction.
UPDATE emails
SET emails.data_providers_id =
SELECT person_details.data_providers_id
FROM person_details
LEFT JOIN data_providers ON person_details.data_providers_id = data_providers.id
ORDER BY data_providers.percent_payout ASC, person_details.import_date ASC ;
Here are some details about the three tables if this helps. Any guidance would be MUCH appreciated. Thanks in advance :)
emails table:
+-------------------+---------------------+------+-----+---------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------------+---------------------+------+-----+---------------------+----------------+
| id | int(11) unsigned | NO | PRI | NULL | auto_increment |
| data_providers_id | tinyint(3) unsigned | NO | MUL | NULL | |
| email | varchar(255) | NO | UNI | NULL | |
+-------------------+---------------------+------+-----+---------------------+----------------+
person_details:
+-------------------+---------------------+------+-----+---------------------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------------------+---------------------+------+-----+---------------------+-------+
| emails_id | int(11) unsigned | NO | PRI | NULL | |
| data_providers_id | tinyint(3) unsigned | NO | PRI | NULL | |
| fname | varchar(255) | YES | | NULL | |
| lname | varchar(255) | YES | | NULL | |
| address_line1 | text | YES | | NULL | |
| address_line2 | text | YES | | NULL | |
| city | varchar(255) | YES | | NULL | |
| state | varchar(2) | YES | | NULL | |
| zip5 | varchar(5) | YES | | NULL | |
| zip4 | varchar(4) | YES | | NULL | |
| home_phone | varchar(10) | YES | | NULL | |
| mobile_phone | varchar(10) | YES | | NULL | |
| work_phone | varchar(10) | YES | | NULL | |
| dob | date | YES | | NULL | |
| gender | varchar(1) | YES | | NULL | |
| ip_address | varchar(15) | NO | | NULL | |
| source | varchar(255) | NO | | NULL | |
| optin_datetime | datetime | NO | MUL | NULL | |
| import_date | timestamp | NO | | 0000-00-00 00:00:00 | |
+-------------------+---------------------+------+-----+---------------------+-------+
data_providers table:
+-----------------+---------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-----------------+---------------------+------+-----+---------+----------------+
| id | tinyint(3) unsigned | NO | PRI | NULL | auto_increment |
| name | varchar(255) | NO | | NULL | |
| precedence | int(2) | YES | | 0 | |
+-----------------+---------------------+------+-----+---------+----------------+
To use a SELECT as an expression you have to put it in parentheses. And to get the first value, use LIMIT 1:
UPDATE emails
SET emails.data_providers_id = (
SELECT person_details.data_providers_id
FROM person_details
LEFT JOIN data_providers ON person_details.data_providers_id = data_providers.id
WHERE person_details.emails_id = emails.id
ORDER BY data_providers.percent_payout ASC, person_details.import_date ASC
LIMIT 1) ;
I am trying to write a MySQL query that gives me results of Organisation Name, its Post Code, any Events that belong to the Organisation and the Post Code of that Event. I've tried all sorts of of join, join and select combinations to no avail. Is this something that is possible ? (I could have a separate table for Org Address and Event Address but it seems like it should be possible to use just one table)
My table structures:
mysql> DESCRIBE cc_organisations;
+-------------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------+------------------+------+-----+---------+----------------+
| id | int(10) unsigned | NO | PRI | NULL | auto_increment |
| user_id | int(10) unsigned | NO | MUL | NULL | |
| type | enum('C','O') | YES | | NULL | |
| name | varchar(150) | NO | MUL | NULL | |
| description | text | YES | | NULL | |
+-------------+------------------+------+-----+---------+----------------+
5 rows in set (0.00 sec)
mysql> DESCRIBE cc_events;
+-------------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------+------------------+------+-----+---------+----------------+
| id | int(10) unsigned | NO | PRI | NULL | auto_increment |
| org_id | int(10) unsigned | NO | MUL | NULL | |
| name | varchar(150) | NO | MUL | NULL | |
| start_date | int(11) | NO | MUL | NULL | |
| end_date | int(11) | YES | MUL | NULL | |
| start_time | int(11) | NO | | NULL | |
| end_time | int(11) | NO | | NULL | |
| description | text | YES | | NULL | |
+-------------+------------------+------+-----+---------+----------------+
8 rows in set (0.00 sec)
mysql> DESCRIBE cc_addresses;
+--------------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+--------------+------------------+------+-----+---------+----------------+
| id | int(10) unsigned | NO | PRI | NULL | auto_increment |
| org_id | int(10) unsigned | YES | MUL | NULL | |
| event_id | int(10) unsigned | YES | MUL | NULL | |
| post_code | varchar(7) | NO | MUL | NULL | |
| address_1 | varchar(100) | NO | | NULL | |
| address_2 | varchar(100) | YES | | NULL | |
| town | varchar(50) | NO | | NULL | |
| county | varchar(50) | NO | | NULL | |
| email | varchar(150) | NO | | NULL | |
| phone | int(11) | YES | | NULL | |
| mobile | int(11) | YES | | NULL | |
| website_uri | varchar(150) | YES | | NULL | |
| facebook_uri | varchar(250) | YES | | NULL | |
| twitter_uri | varchar(250) | YES | | NULL | |
+--------------+------------------+------+-----+---------+----------------+
14 rows in set (0.00 sec)
select o.Name, oAddress.PostCode, e.Name, eAddress.PostCode
from cc_organisations o
inner join cc_addresses oAddress on oAddress.org_id = o.id
left outer join cc_events e on e.org_id=o.id
inner join cc_addresses eAddress on eAddress.event_id = e.id
SELECT cco.name as OrgName, cca.post_code as OrgPostCode, cce.id,
cce.org_id, cce.name, cce.start_date, cce.end_date, cce.start_time,
cce.end_time, cce.description
FROM cc_events cce, cc_addresses cca, cc_organisations cco
WHERE cca.event_id = cce.id AND cco.id=cce.org_id
ORDER BY cce.start_date
LIMIT 50;
You can change your sort and limit, I just added those in because I don't know how big your DB is... You may even be able to get away with:
SELECT cco.name as OrgName, cca.post_code as OrgPostCode, cce.*
FROM cc_events cce, cc_addresses cca, cc_organisations cco
WHERE cca.event_id = cce.id AND cco.id=cce.org_id
ORDER BY cce.start_date LIMIT 50;
But im not 100% sure if the 2nd query will bum out or not.
Your address table has the post codes in it; but it also has an organization id and event id foreign keys. We only need to check the event_id from the address table because any event will belong to an organization.
Address's Event matched Event ID
Event's Organization matched Organization ID
I'm now trying to populate my 'testMatch' table (below) with data from my 'summary' table:
TESTMATCH TABLE
+------------------+--------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------------+--------------+------+-----+---------+-------+
| match_id | int(11) | NO | PRI | NULL | |
| match_date | date | YES | | NULL | |
| ground | varchar(50) | YES | MUL | NULL | |
| homeTeam | varchar(100) | YES | MUL | NULL | |
| awayTeam | varchar(100) | YES | MUL | NULL | |
| matchResult | varchar(100) | YES | MUL | NULL | |
| manOfMatch | varchar(30) | YES | | NULL | |
| homeTeam_captain | int(10) | YES | MUL | NULL | |
| homeTeam_keeper | int(10) | YES | MUL | NULL | |
| awayTeam_captain | int(10) | YES | MUL | NULL | |
| awayTeam_keeper | int(10) | YES | MUL | NULL | |
+------------------+--------------+------+-----+---------+-------+
There is no problem populating match_id -----> manOfMatch - it is 'homeTeam_captain', 'homeTeam_keeper', 'awayTeam_captain' and 'awayTeam_keeper' that i'm having problems bringing in.
SUMMARY TABLE
mysql> DESCRIBE SUMMARY;
+-----------------+--------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-----------------+--------------+------+-----+---------+-------+
| matchID | int(11) | NO | PRI | NULL | |
| Test | int(11) | YES | | NULL | |
| matchDate | date | YES | | NULL | |
| Ground | varchar(50) | YES | | NULL | |
| HomeTeam | varchar(100) | YES | | NULL | |
| AwayTeam | varchar(100) | YES | | NULL | |
| matchResult | varchar(50) | YES | | NULL | |
| MarginRuns | int(11) | YES | | NULL | |
| MarginWickets | int(11) | YES | | NULL | |
| ManOfMatch | varchar(40) | YES | | NULL | |
| HomeTeamCaptain | varchar(30) | YES | | NULL | |
| HomeTeamKeeper | varchar(30) | YES | | NULL | |
| AwayTeamCaptain | varchar(30) | YES | | NULL | |
| AwayTeamKeeper | varchar(30) | YES | | NULL | |
+-----------------+--------------+------+-----+---------+-------+
I need to somehow select the data from summary, get the corresponding player_id and input the player_id into my 'testMatch'. Player table below:
PLAYERS TABLE
mysql> describe players;
+----------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+----------------+--------------+------+-----+---------+----------------+
| player_id | int(11) | NO | PRI | NULL | auto_increment |
| player_surname | varchar(30) | YES | | NULL | |
| team | varchar(100) | YES | MUL | NULL | |
+----------------+--------------+------+-----+---------+----------------+
So to clarify, eg. I want to select homeTeam_captain data FROM summary table BUT not the name, I want the corresponding player_id instead.
I assume I need to use some sort of join/subqueries to get this done... i've tried finding the correct select query first to make sure i'm pulling out the right data, and I have been using the below code for testing (thanks to user Larry_Croft for helping me with this):
select matchID, player_id, player_surname, team from players p, summary s
where
s.hometeamcaptain = p.player_surname AND s.HomeTeam = p.team ORDER BY matchID;
But this correctly brings back 65 rows (65 matches) BUT i then tried it with:
select matchID, player_id, player_surname, team from players p, summary s
where
s.hometeamKEEPER = p.player_surname AND s.HomeTeam = p.team ORDER BY matchID;
But this brings back only 61 rows (should be 65) so i must have an error in the logic.
Once I get this select to work, i then need to somehow include it into my 'INSERT INTO.....SELECT statement to put all the data into 'testMatch' table.
I hope this makes sense and thanks for your help!
Well for me it looks that there is eitehr a hometeamKEEPER that has a null value or that the value of hometeamKEEPER is not in the players table.
Using the following query you should be able to find the hometownKEEPER that are not in the players table:
SELECT matchID, player_id, player_surname, team
FROM players p
RIGHT JOIN summary s ON p.hometeamKEEPER = p.player_surname AND
s.HomeTeam = p.team
ORDER BY matchID;