I have created a scheduling application for work and I have run into a problem which I've spent many days trying to figure out with no luck. The application pulls information from a database with a Patients table, Clinician table, and Appointments table.
Currently, when a user selects a Patient from a dropdown list in the application, a query is executed that returns all Clinicians which a user can pick to assign the Appointment to. The problem is that there are hundreds of Clinicians and Patients usually only see the same 3-4 Clinicians.
What I would like to do is create a query that pulls all Clinicians but displays those Clinicians who have had appointments with a specific Patient in the past FIRST and then lists every other Clinician afterwards.
Basically, the query needs to check the Appointments table for a specific PatientID, pull all the clinicians who have had appointments with this client in the past, and then under this list all clinicians who have not seen this patient.
Then best I have come up with looks like this but I don't really know what else to try at this point.
SELECT Clinician.att_id, Clinician.att_name,
Case When Clinician.att_id = Appointments.att_id THEN 1 ELSE 0 END as common
FROM Clinician inner join
Appointments
on Clinician.att_id = Appointments.att_id
order by common desc;
If you want all clinicians, then you want a left join or some other construct.
SELECT c.att_id, c.att_name
FROM Clinician
ORDER BY (CASE WHEN EXISTS (SELECT 1
FROM Appointments a
WHERE c.att_id = a.att_id AND
a.patient_id = #patient_id
)
THEN 1 ELSE 2
END)
Related
Let me explain a little bit about what I am trying to do because I dont even know the vocab to use to ask. I have an Access 2016 database that records staff QA data. When a staff member misses a QA we assign a job aid that explains the process and they can optionally send back a worksheet showing they learned about what was missed. If they do all of these ina 3 month period they get a credit on their QA score. So I have a series of records all of whom have a date we assigned the work(RA1) and MAY have a work returned date(RC1).
In the below image "lavalleer" has earned the credit because both of her sheets got returned. "maduncn" Did not earn the credit because he didn't do one.
I want to create a query that returns to me only the people that are like "lavalleer". I tried hitting google and searched here and access.programmers.co.uk but I'm only coming up with instructions to use Not null statements. That wouldn't work for me because if I did a IS Not Null on "maduncn" I would get the 4 records but it would exclude the null.
What I need to do is build a query where I can see staff that have dates in ALL of their RC1 fields. If any of their RC1 fields are blank I dont want them to return.
Consider:
SELECT * FROM tablename WHERE NOT UserLogin IN (SELECT UserLogin FROM tablename WHERE RCI IS NULL);
You could use a not exists clause with a correlated subquery, e.g.
select t.* from YourTable t where not exists
(select 1 from YourTable u where t.userlogin = u.userlogin and u.rc1 is null)
Here, select 1 is used purely for optimisation - we don't care what the query returns, just that it has records (or doesn't have records).
Or, you could use a left join to exclude those users for which there is a null rc1 record, e.g.:
select t.* from YourTable t left join
(select u.userlogin from YourTable u where u.rc1 is null) v on t.userlogin = v.userlogin
where v.userlogin is null
In all of the above, change all occurrences of YourTable to the name of your table.
I want a list of customers that have not placed an order in a certain date period on two different tables
I tried this:But is bring back nothing
SELECT "OEORDH"."CUSTOMER","OEORDH"."BILNAME","OEORDH"."ORDDATE"
FROM "SAMINC"."dbo"."OEORDH"
inner JOIN "SAMINC"."dbo"."ARCUS"on "ARCUS"."IDCUST" = "OEORDH"."CUSTOMER"
where "OEORDH"."ORDDATE" is null
ORDER BY "ARCUS"."IDCUST"
Please help
I expect the output to show me all customers that have not place orders.
I have 2 tables, one with codes and budgets called FACT_QUANTITY_TMP and the other is a tree with all possible codes called C_DS_BD_AP_A.
All codes that exist are in this C_DS_BD_AP_A table, yet not all are in FACT_QUANTITY_TMP. Only those with budget get added by the ERP.
We need all codes to be in this FACT_QUANTITY_TMP table, just with budget to be 0 in that case.
I was trying first to get the missing codes by the following query:
SELECT T2.D_ACTIECODE From
(SELECT distinct
A.FULL_DATE as FULL_DATE, A.DIM03 as DIM03
FROM FACT_QUANTITY_TMP A) T1
RIGHT JOIN
(select distinct B.D_ACTIECODE AS D_ACTIECODE from C_DS_BD_AP_A B) T2
ON
T1.DIM03 = T2.D_ACTIECODE
where T1.DIM03 is null
order by T1.full_date
I get a list of my missing records yet it doesn't take into accounts the FULL_DATE (year and month) of the destination table.
In short, FACT_QUANTITY_TMP needs to have all records added that it's missing grouped by months and year.
Kind of looking for the best approach here, this query would be used in a automatically run stored proc every month when the ERP data gets pulled.
You can generate the missing records by doing a cross join to generate all combinations and then removing those that are already there. For example:
select fd.fulldate, c.D_ACTIECODE
from (select distinct fulldate from fact_quantity_tmp) fd cross join
(select D_ACTIECODE from C_DS_BD_AP_A) c left join
fact_quantity_tmp fqt
on fqt.fulldate = fd.fulldate and fqt.dim03 = c.D_ACTIECODE
where fqt.fulldate is null;
You can put an insert before this to insert these rows into the fact table.
I have been working on a query that identifies an issue with the data in my database:
SELECT t1.*
FROM [DailyTaskHours] t1
INNER JOIN (
SELECT ActivityDate
,taskId
,EnteredBy
FROM [DailyTaskHours]
WHERE hours != 0
GROUP BY EnteredBy
,taskId
,ActivityDate
HAVING COUNT(*) > 1
) t2 ON (
t1.ActivityDate = t2.ActivityDate
AND t1.taskId = t2.taskId
AND t1.EnteredBy = t2.EnteredBy
AND t1.Hours != 0
)
ORDER BY ActivityDate
What this does is find duplicate hours booked for the same person on the same task on the same day:
Now that I found the issues I want to correct them with an UPDATE. I want the duplicate activity that was created earlier than the other to move the value from Hours to doubleBookedHours and for Hours to be zeroed out. Secondly, I want the more recent row's DoubleBookedFLag column to be updated to 1.
How can I achieve this?
You can write a SQL Server Agent Job to call T-SQL or a SSIS package to perform your logic.
I always like using pseudo code when designing my algorithm.
For instance.
Find duplicate entries and save them to a temporary table, either in a staging area or tempdb. Some location that is accessible by multiple processes (spids).
Find least recent records (1+). Move hours to double booked column?
Find least recent records (1+). Zero out hours column.
Update the most recent record to have double book flag column set to 1.
You were not specific on moving the value from hours to double booked hours. Are these columns?
In short, a SQL Server Agent job and several correct T-SQL steps should solve your problem.
I am having difficulty updating records within a database based on the most recent date and am looking for some guidance. By the way, I am new to SQL.
As background, I have a windows forms application with SQL Express and am using ADO.NET to interact with the database. The application is designed to enable the user to track employee attendance on various courses that must be attended on a periodic basis (e.g. every 6 months, every year etc.). For example, they can pull back data to see the last time employees attended a given course and also update attendance dates if an employee has recently completed a course.
I have three data tables:
EmployeeDetailsTable - simple list of employees names, email address etc., each with unique ID
CourseDetailsTable - simple list of courses, each with unique ID (e.g. 1, 2, 3 etc.)
AttendanceRecordsTable - has 3 columns { EmployeeID, CourseID, AttendanceDate, Comments }
For any given course, an employee will have an attendance history i.e. if the course needs to be attended each year then they will have one record for as many years as they have been at the company.
What I want to be able to do is to update the 'Comments' field for a given employee and given course based on the most recent attendance date. What is the 'correct' SQL syntax for this?
I have tried many things (like below) but cannot get it to work:
UPDATE AttendanceRecordsTable
SET Comments = #Comments
WHERE AttendanceRecordsTable.EmployeeID = (SELECT EmployeeDetailsTable.EmployeeID FROM EmployeeDetailsTable WHERE (EmployeeDetailsTable.LastName =#ParameterLastName AND EmployeeDetailsTable.FirstName =#ParameterFirstName)
AND AttendanceRecordsTable.CourseID = (SELECT CourseDetailsTable.CourseID FROM CourseDetailsTable WHERE CourseDetailsTable.CourseName =#CourseName))
GROUP BY MAX(AttendanceRecordsTable.LastDate)
After much googling, I discovered that MAX is an aggregate function and so I need to use GROUP BY. I have also tried using the HAVING keyword but without success.
Can anybody point me in the right direction? What is the 'conventional' syntax to update a database record based on the most recent date?
So you want to update the AttendantsRecordsTable, and set the comment to the comment in the most recent CourseDetailsTable for each employee?
UPDATE
dbo.AttendanceRecordsTable
SET
Comments = #Comments
FROM
CourseDetailsTable cd
INNER JOIN
Employee e ON e.EmployeeID = AttendanceRecordTable.EmployeeID
WHERE
e.LastName = #LastName
AND e.FirstName = #FirstName
AND cd.CourseName = #CourseName
AND AttendanceRecordsTable.CourseID = cd.CourseID
AND AttendanceRecordsTable.LastDate =
(SELECT MAX(LastDate)
FROM AttendanceRecordsTable a
WHERE a.EmployeeID = e.EmployeeID
AND a.CourseID = cd.CourseID)
I think something like that should work.
You basically need to do a join between the AttendanceRecordTable, which you want to update, and the Employee and CourseDetailsTable tables. For these two, you have defined certain parameters to select a single row each, and then you need to make sure to update only that last AttendanceRecordTable entry which you do by making sure it's the MAX(LastDate) of the table.
The subselect here:
(SELECT MAX(LastDate)
FROM AttendanceRecordsTable a
WHERE a.EmployeeID = e.EmployeeID AND a.CourseID = cd.CourseID)
will select the MAX (last) of the LastDate entries in AttendanceRecordsTable, based on selection of a given employee (e.EmployeeID) and a given course (cd.CourseID).
Pair that with the selects to select the single employee by first name and last name (that of course only works if you never have two John Miller in your employee table!). You also select the course by means of the course name, so that too must be unique - otherwise you'll get multiple hits in the course table.
Marc
Assuming that you primary key on the AttendanceRecordsTable is id:
UPDATE AttendanceRecordsTable SET Comments = #Comments
WHERE AttendanceRecordsTable.id = (
SELECT AttendanceRecordsTable.id
FROM EmployeeDetailsTable
JOIN AttendanceRecordsTable ON AttendanceRecordsTable.EmployeeID = EmployeeDetailsTable.EmployeeID·
JOIN CourseDetailsTable ON AttendanceRecordsTable.CourseID = CourseDetailsTable.CourseID
WHERE
EmployeeDetailsTable.LastName =#ParameterLastName AND EmployeeDetailsTable.FirstName =#ParameterFirstName AND
CourseDetailsTable.CourseName =#CourseName
ORDER BY AttendanceRecordsTable.LastDate DESC LIMIT 1)
Basically, that sub select will first join the attendence, employee and coursedetail tables, extract those rows where the employee's and course details' name match those given by your parameters and limit the output in reverted order to one line. You might want to test that sub-select statement first.
Edit: I just read your posting again, you don't have a single primary key column on AttendanceRecordsTable. Bummer.