My query shows an error(an expression was expected near DISTINCT), i dont know how to resolve it, if i remove the first INSERT query line, values are selecting properly, if i add insert it shows error, any help could be useful thanks in advance.
INSERT INTO normal_days (user_id, department_id,designation_id,date_cur,clock_in,clock_out)
SELECT DISTINCT clo.user_id, design.department_id , uses.designation_id, clo.date,clo.clock_in, clo.clock_out
FROM clock clo
INNER JOIN holidays AS hol ON hol.date != clo.date
INNER JOIN users AS uses ON clo.user_id = uses.id
INNER JOIN designations AS design ON design.id = uses.designation_id
WHERE date(clo.created_at) = "2016-06-23"
AND TIMESTAMPDIFF(second,clo.clock_in, clo.clock_out) = 28800
AND !(DAYOFWEEK(clo.date)=7)
AND !(DAYOFWEEK(clo.date)=1);
INSERT INTO normal_days (user_id, department_id,designation_id,date_cur,clock_in,clock_out)
SELECT clo.user_id, design.department_id , uses.designation_id, clo.date, clo.clock_in, clo.clock_out
FROM clock clo
LEFT JOIN holidays AS hol ON hol.date = clo.date
INNER JOIN users AS uses ON clo.user_id = uses.id
INNER JOIN designations AS design ON design.id = uses.designation_id
WHERE date(clo.created_at) = "2016-06-23"
AND TIMESTAMPDIFF(second,clo.clock_in, clo.clock_out) = 28800
AND !(DAYOFWEEK(clo.date)=7)
AND !(DAYOFWEEK(clo.date)=1)
AND hol.date is NULL ;
Related
I have 2 tables, my first table named "popa" contains departments, my second table "stat" contains statistics, if I do an inner join of the 2 I get good results that I would like to put in a column "of" my table "popa".
SELECT dep, sum(i_d) FROM popa INNER JOIN stat on popa.num_dep = stat.dep group BY dep
I tried something like
UPDATE popa
SET pourcentagedeces = s from
(SELECT dep as d, sum(i_d)as s
FROM popa INNER JOIN stat on popa.num_dep = stat.dep group BY d)
WHERE dep = d
in fact i'm a little lost
as you can see i tried wht you said, but it didn't work
enter image description here
Thank you stef
You must use multiple-table UPDATE:
UPDATE popa
JOIN (SELECT dep num_dep, SUM(i_d)as s
FROM stat
GROUP BY num_dep) stats USING (num_dep)
SET popa.pourcentagedeces = stats.s;
As pointed out in the comments this is redundant storage of the aggregates but -
UPDATE `popa`
INNER JOIN (
SELECT `dep`, SUM(`i_d`) AS `s`
FROM `stat`
GROUP BY `dep`
)AS `agg` ON `popa`.`num_dep` = `agg`.`dep`
SET `pourcentagedeces` = `agg`.`s`;
Is this what you need?
You use UPDATE JOIN where one p1 is the table and p2 is the subquery, joined by the condition.
UPDATE popa p1 JOIN ( SELECT dep, sum(incid_dchosp) as s FROM popa INNER JOIN stat on popa.num_dep = stat.dep group BY dep ) p2 ON p1.dep = p2.dep
SET p1.pourcentagedeces = p2.s
I want to create a view which combines the data with the maximal date from the tables shown in the picture. These should be grouped by the profileID.
Database ERM
The profileIDs are linked to profile.userID.
I tried different approches in my code. The fort one slects the data where date is max, but the join doesn't work. Every profileID will be joined with the same data.
CREATE
ALGORITHM = UNDEFINED
DEFINER = `b91788dd8d05b5`#`%`
SQL SECURITY DEFINER
VIEW fitchallengersql1.profileview AS
Select p.userID,
(SELECT
`bf`.`bodyFat`
FROM
(`fitchallengersql1`.`bodyfatprofile` `bf`
JOIN `fitchallengersql1`.`profile` `p`)
WHERE
((`bf`.`profileID` = `p`.`userID`)
AND (`bf`.`date` = (SELECT
MAX(`fitchallengersql1`.`bodyfatprofile`.`date`)
FROM
`fitchallengersql1`.`bodyfatprofile`)))) AS `bodyFat`,
(SELECT
`bw`.`bodyweight`
FROM
(`fitchallengersql1`.`bodyweightprofile` `bw`
JOIN `fitchallengersql1`.`profile` `p`)
WHERE
((`bw`.`profileID` = `p`.`userID`)
AND (`bw`.`date` = (SELECT
MAX(`fitchallengersql1`.`bodyweightprofile`.`date`)
FROM
`fitchallengersql1`.`bodyweightprofile`)))) AS `bodyWeight`,
(SELECT
`bmi`.`bmi`
FROM
(`fitchallengersql1`.`bmiprofile` `bmi`
JOIN `fitchallengersql1`.`profile` `p`)
WHERE
((`bmi`.`profileID` = `p`.`userID`)
AND (`bmi`.`date` = (SELECT
MAX(`fitchallengersql1`.`bmiprofile`.`date`)
FROM
`fitchallengersql1`.`bmiprofile`)))) AS `bmi`
From profile
In the second one the join works how it should, but I can't figure out a way to select just the data where date is max.
CREATE
ALGORITHM = UNDEFINED
DEFINER = `b91788dd8d05b5`#`%`
SQL SECURITY DEFINER
VIEW `fitchallengersql1`.`profileview` AS
SELECT
`p`.`userID` AS `userID`,
`p`.`privacy` AS `privacy`,
`bs`.`size` AS `bodysize`,
`bw`.`bodyweight` AS `bodyweight`,
`bf`.`bodyFat` AS `bodyfat`,
`bmi`.`bmi` AS `bmi`
FROM
((((`fitchallengersql1`.`profile` `p`
JOIN `fitchallengersql1`.`bodysizeprofile` `bs`)
JOIN `fitchallengersql1`.`bodyweightprofile` `bw`)
JOIN `fitchallengersql1`.`bmiprofile` `bmi`)
JOIN `fitchallengersql1`.`bodyfatprofile` `bf`)
WHERE
((`p`.`userID` = `bs`.`profileID`)
AND (`p`.`userID` = `bw`.`profileID`)
AND (`p`.`userID` = `bmi`.`profileID`)
AND (`p`.`userID` = `bf`.`profileID`))
Hope someone could help me.
Thank you!
fleewe
Hope following query gives what you need. Please follow the pattern and join the rest of the tables. Please note that when the table grows these will definitely have performance issues as this require huge processing.
-- Select the columns that you need
select p.*, lbp.*
from profile p
inner join (
-- get the latest bmiprofile per user profile
select bp1.*
from bmiprofile bp1
inner join (select profileID, max(date) as date from bmiprofile group by profileID) as bp2 on bp1.prfileId = bp2.profileId and bp1.date = bp2.date
) as lbp on lbp.ProfileId = p.userId
-- Join the other tables in similar way
this is only a comment, but I needed formating capability:
Don't place the joining predicates into the where clause if using ANSI join syntax, instead use ON followed by the relevant predicates. e.g.
FROM `fitchallengersql1`.`profile` `p`
JOIN `fitchallengersql1`.`bodysizeprofile` `bs` ON `p`.`userID` = `bs`.`profileID`
JOIN `fitchallengersql1`.`bodyweightprofile` `bw` ON `p`.`userID` = `bw`.`profileID`
JOIN `fitchallengersql1`.`bmiprofile` `bmi` ON `p`.`userID` = `bmi`.`profileID`
JOIN `fitchallengersql1`.`bodyfatprofile` `bf` ON `p`.`userID` = `bf`.`profileID`
MySQL Table Diagram:
My query this far:
SELECT tblcourses.CourseStandard,
tblcourses.CourseID,
tblcourses.CourseRef,
tblcourses.CourseStandard,
tblcourses.CourseName,
tblcourses.CourseDuration,
tblcourses.NQFLevel,
tblcourses.CoursePrice,
tblcoursestartdates.StartDate
FROM etcgroup.tblcoursestartdates tblcoursestartdates
INNER JOIN etcgroup.tblcourses tblcourses
ON (tblcoursestartdates.CourseID = tblcourses.CourseID)
WHERE tblcoursestartdates.StartDate >= Now()
If you look at the diagram you will see I have a 3rd table. The query above works fine. It display all the data as it should.
I want to show all the courses and their respective dates excluding those that the student is already booked for. Keep in mind that there can be 20 start dates for 1 course. This is why I am only choosing dates >= Now().
I want to make sure that a student does not get double booked. Yes I can do it afterwards. Beep student already booked BUT if I can have it now show the course dates that the student already booked then great. Any suggestions?
This is pretty straightforward. Presumably you know the StudentID you'd like to see. Do a left join to the bookings table and select the mismatches.
SELECT tblcourses.CourseStandard,
tblcourses.CourseID,
tblcourses.CourseRef,
tblcourses.CourseStandard,
tblcourses.CourseName,
tblcourses.CourseDuration,
tblcourses.NQFLevel,
tblcourses.CoursePrice,
tblcoursestartdates.StartDate
FROM etcgroup.tblcoursestartdates tblcoursestartdates
INNER JOIN etcgroup.tblcourses tblcourses
ON tblcoursestartdates.CourseID = tblcourses.CourseID
AND tblcoursestartdates.StartDate >= Now()
LEFT JOIN tblbookings
ON tblbookings.CourseId = tblcourses.CourseId
AND tblbookings.StudentId = <<<the student ID in question >>>
WHERE tblbookings.BookingID IS NULL
The trick here is the LEFT JOIN ... IS NULL pattern. It eliminates the rows where the ON condition of the LEFT JOIN hit, leaving only the ones where it missed.
Do a left join to tblBookings on courseID where the bookingID is null (there are no matches). You'll have to provide the studentID as a parameter to the query.
SELECT DISTINCT c.CourseStandard,
c.CourseID,
c.CourseRef,
c.CourseStandard,
c.CourseName,
c.CourseDuration,
c.NQFLevel,
c.CoursePrice,
d.StartDate
FROM etcgroup.tblcoursestartdates d
INNER JOIN etcgroup.tblcourses c ON d.CourseID = c.CourseID
LEFT JOIN etcgroup.tblBookings b on c.CourseID = b.CourseID and b.StudentID = #StudentID
WHERE d.StartDate >= Now() and b.bookingID is null
Use NOT EXISTS or NOT IN to find the courses a student has already booked:
SELECT
c.CourseStandard,
c.CourseID,
c.CourseRef,
c.CourseStandard,
c.CourseName,
c.CourseDuration,
c.NQFLevel,
c.CoursePrice,
csd.StartDate
FROM etcgroup.tblcourses c
INNER JOIN etcgroup.tblcoursestartdates csd ON csd.CourseID = tblcourses.CourseID
WHERE csd.StartDate >= Now()
AND c.CourseID NOT IN
(
SELECT CourseID
FROM tblbookings
WHERE StudentID = 12345
);
I'm having trouble with a simple MySQL Query.
Here is the query:
SELECT distinct e.E_CODE, s.S_CODE, p.P_ID, p.P_NAME, p.P_FIRSTNAME, p.P_STATUS, e.E_BOSS, tp.TP_TITLE
from event_participation ep, worker p, type_participation tp, event e, section s
where ep.P_ID = p.P_ID
and s.S_ID = e.S_ID
and ep.TP_ID = tp.TP_ID
and e.E_CODE = ep.E_CODE
The problem is that ep.TP_ID sometimes has a value set to zero while tp.TP_ID has nothing with a zero ID. It's auto-increment and starts at 1 and so on.
The result is obviously that this query does not return records when the ep.TP_ID = 0 and there is no match in tp.TP_ID.
So I'm trying to figure out a way to get those results in there anyway. I was thinking of using a LEFT JOIN statement but couldn't figure out a proper way to insert it into the query.
Any advice on this matter would be greatly appreciated.
First of all, I advice you to use some general type for event_participation records without type; But, unless to take that decision, supposing you want to get all matching records between all tables but also get results with no type, you can use the following query:
SELECT DISTINCT e.E_CODE, s.S_CODE, p.P_ID, p.P_NAME, p.P_FIRSTNAME, p.P_STATUS, e.E_BOSS, tp.TP_TITLE
FROM event_participation ep
JOIN worker p ON (ep.P_ID = p.P_ID)
JOIN event e ON (e.E_CODE = ep.E_CODE)
JOIN section s ON (s.S_ID = e.S_ID)
LEFT JOIN type_participation tp ON (ep.TP_ID = tp.TP_ID)
SELECT DISTINCT e.E_CODE
, s.S_CODE
, p.P_ID
, p.P_NAME
, p.P_FIRSTNAME
, p.P_STATUS
, e.E_BOSS
, tp.TP_TITLE
FROM event_participation ep
JOIN worker p
ON p.P_ID = ep.P_ID
JOIN event e
ON e.E_CODE = ep.E_CODE
JOIN section s
ON s.S_ID = e.S_ID
LEFT
JOIN type_participation tp
ON tp.TP_ID = ep.TP_ID;
I have 3 tables; events, memberEvents, and members.
Events: eventId, eventName, eventDivision
memberEvents: memberID, eventOne, eventTwo, eventThree, eventFour, eventFive
member: memberID, memberFirstName, memberLastName
I am trying to get it to display events.eventName followed by the memberFirstName & memberLastName of members that are doing that event
This is the query I have been trying:
SELECT * FROM events, memberEvents, members
WHERE events.eventDivision = 'C'
RIGHT JOIN memberEvents.memberID
ON events.eventID = memberEvents.eventOne
OR events.eventID = memberEvents.eventTwo
OR events.eventID = memberEvents.eventThree
OR events.eventID = memberEvents.eventFour
OR events.eventID = memberEvents.eventFive
When I run this i get "#1066 - Not unique table/alias: 'memberEvents'"
Try:
SELECT ev.*, me.* FROM events ev
RIGHT JOIN memberEvents me
ON (ev.eventID = me.eventOne
OR ev.eventID = me.eventTwo
OR ev.eventID = me.eventThree
OR ev.eventID = me.eventFour
OR ev.eventID = me.eventFive)
WHERE ev.eventDivision = 'C'
Did you specifically want to limit the number of events per member to five? Why not just have a memberEvent table that has a primary key made up of foreign keys to member and event?
memberEvent: memberId, eventId
Then your query would be
SELECT
event.eventName,
member.memberFirstName,
member.memberLastName
FROM
event
INNER JOIN
memberEvent
ON
memberEvent.eventID = event.eventId
INNER JOIN
member
ON
memberEvent.memberId = member.memberId
WHERE
event.division = 'C';
Maybe you have a good reason for the table structure you have chosen but it is a denormalised design and if you ever need to increase the number of events per member you'll need to modify your schema and code to suit.
I think you should have a closer look at the defenition
JOIN Syntax
It seems that you have misunderstood the JOIN syntax.
SELECT *
FROM table1 t1 right join
table2 t2 on t1.key1 = t2.key1
and t1.key2 = t2.key2
where t1.somecolumn = somevalue