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Joining tables in SQL in one row

I have the following table structure of my database:
db structure
My aim is to output every row of tbl_Therapeuten (these are my employees) with the name of their trainings (in german "Fortbildung").
The names of the trainings are stored in tbl_Forbildungen. And the trainings which each employee has is stores in tbl_Therapeut_Fortbildung. For the output I want to show the name of the training, not the id.
Like this:
output
I am programming in C#, SQL Server.
First I tried this:
string sSQL = "SELECT t.*, STRING_AGG(tf.Id_Fortbildung, ';') AS Fortbildungen " +
"FROM tbl_Therapeuten t " +
"FULL OUTER JOIN tbl_Therapeut_Fortbildung tf on t.Id = tf.Id_Therapeut ";
But this brings an error containing that I don't use tbl_Therapeuten.Id in an aggregate function or in a Group by clause.
Next I tried this:
string sSQL = "SELECT t.Id, t.Nachname, STRING_AGG(tf.Id_Fortbildung, ';') AS Fortbildungen " +
"FROM tbl_Therapeuten t " +
"FULL OUTER JOIN tbl_Therapeut_Fortbildung tf on t.Id = tf.Id_Therapeut " +
"GROUP BY t.Id, t.Nachname";
This worked (except displaying the name of the training but the Id) but I don't want to explicitly name every column of tbl_Therapeuten. I want to use "t.*". But this is not working:
string sSQL = "SELECT t.*, STRING_AGG(tf.Id_Fortbildung, ';') AS Fortbildungen " +
"FROM tbl_Therapeuten t " +
"FULL OUTER JOIN tbl_Therapeut_Fortbildung tf on t.Id = tf.Id_Therapeut " +
"GROUP BY t.*";
So I need some help :)
And what I also don't know how to do is to display the name of the trainings instead of the id.
Thanks for your help!

You might find that a correlated subquery provides better performance (by avoiding the outer aggregation) and allows you to avoid listing all columns from t:
SELECT T.*,
(SELECT STRING_AGG(F.Name, ';')
FROM tbl_Therapeut_FortBildung TF JOIN
tbl_FortBildungen F
ON F.Id = TF.Id_FortBildung
WHERE TF.Id_Therapeut = T.Id
) as Fortbildungen
FROM Therapeuten T

I think this is what you need.
SELECT T.Id,T.Name,T.Street,T.BirthDate,STRING_AGG(F.Name,';')
FROM Therapeuten T
LEFT JOIN tbl_Therapeut_FortBildung TF ON TF.Id_Therapeut=T.Id
LEFT JOIN tbl_FortBildungen F ON F.Id=TF.Id_FortBildung
GROUP BY T.Id,T.Name,T.Street,T.BirthDate
As far as I know SQL server does not support the GROUP BY *, so you will have to specify the column names.

How to use <> expression in Entity Framework

We need to convert following query to Entity framework syntax based query but not fond any alternative for '<>' condition:
Query:
select (FirstName+' '+LastName) AS Name ,WorksNumber from [TSHumanResource]
join [TSUserProfile] on [TSUserProfile].[TSPersonID] = [TSHumanResource].[TSPersonID]
join [TSPerson] on [TSPerson].[TSPersonID] = [TSHumanResource].[TSPersonID]
where [TSUserProfile].[TSUserStatusID] = 1
and [EmployeeReference] <> ' ' and [MMSUserID] is not null order by [WorksNumber] asc
Here's what I was tring:
(from HR in oDB.TSHumanResources
join UP in oDB.TSUserProfiles on HR.TSPersonID equals UP.TSPersonID
join P in oDB.TSPersons on HR.TSPersonID equals P.TSPersonID
where UP.TSUserStatusID == 1 && HR.EmployeeReference <>
select new
{
ID = e.TSPersonID ,
ID = e.TID,
}).Take(10);

The SQL Server operator <> means not equal. In c#, the not equal operator is written like this: !=.
You have another problem in your linq query - you are currently doing an inner join instead of a left join.
A left join in LINQ is a bit cumbersome comparing to a left join in SQL - it has to go through a group join first. Your query should look more like this:
from hr in TSHumanResource
join up in TSUserProfile on hr.TSPersonID equals up.TSPersonID into upgroup
from upg in upgroup.DefaultIfEmpty()
join p in TSPerson on upg.TSPersonID equals p.TSPersonID into pgroup
from puphr in pgroup.DefaultIfEmpty()
where up.TSUserStatusID = 1
&& HR.EmployeeReference != " " // Assuming you want it different than a single space
// Other conditions here - I don't know where MMSUserID belongs to
order by hr.WorksNumber // just guessing here - I don't know if it's from hr

Using SQL instead of LINQ in Telerik Open Access

I'm using Telerik Open Access. I have two separate projects that have Open Access data and then a third project that has the bulk of my code. I've been working on a way to convert a simple (at least I thought it was) SQL query to LINQ so that I can get the data I need. I have not been successful. I've had to break a single LINQ query into separate queries, because of the need for the Trim() function (I think). This has led to a lengthy piece of code and I'm still not getting the same results as my SQL query.
So my question is, is there anyway to use SQL instead of LINQ to access the data in the Open Access projects? If so, can you show me the syntax to do that for my query?
If it is not possible to use SQL, can you show me show me the proper way to convert my SQL query into LINQ so that I get the same results?
Thank you.
My SQL query is
SELECT DISTINCT us2.ccustno, us2.dispname, us2.csiteno, so.s1_name
FROM [DALubeDeacom].[dbo].[dmbill] bi
INNER JOIN [DALubeDeacom].[dbo].[dmso1] so
ON bi.bi_s1id = so.s1_id
INNER JOIN [DALubeNew].[dbo].[usersecurity] us2
ON so.s1_name = us2.cparentno
WHERE
us2.ctype = 'JOBSITE'
AND us2.csiteno is not null
AND us2.csiteno != ''
AND bi.bi_smid = '22'
ORDER BY us2.csiteno
My LINQ query is
public List<DataModelSample> GetLocationsBySalesNo(string salesNo)
{
int iSalesNo = int.Parse(salesNo.Trim());
try
{
var dmso = (
from so in deacom.Dmso1
join qt in deacom.Dmbills
on so.S1_id equals qt.Bi_s1id
where qt.Bi_smid == iSalesNo
select new Dmso1
{
S1_id = so.S1_id
, S1_name = so.S1_name.Trim()
}
);
var usec = (
from us in dbContext.Usersecurities
where us.Cparentno != null && us.Cparentno.Trim() != "" && us.Ctype.Trim() == "JOBSITE" && us.Csiteno.Trim() != ""
select new Usersecurity
{
Ccustno = us.Ccustno.Trim(),
Csiteno = us.Csiteno.Trim(),
Dispname = us.Dispname.Trim(),
Cparentno = us.Cparentno.Trim()
}
);
var customers =
(
from us in usec
join so in dmso
on us.Cparentno equals so.S1_name
select us
);
customers = customers.GroupBy(x => x.Csiteno).Select(x => x.First());
List<DataModelSample> listLocations =
(
from c in customers
select new DataModelSample
{
customerID = c.Ccustno
,
origLocationName = c.Csiteno + " " + c.Dispname
,
origLocationID = c.Csiteno
}
).OrderBy(x => x.origLocationID).ToList();
return listLocations.ToList();
}
catch (Exception ex)
{
throw ex;
}
} // GetLocationsBySalesNo(userInfo.csalesno)
Edit 1 - 2-19-16
Tried a suggestion by ViktorZ. His query was similar to the one I first tried. It returned the error "Identifier 'Ctype' is not a parameter or variable or field of 'DALube_DeacomModel.Dmbill'. If 'Ctype' is a property please add the FieldAlias or Storage attribute to it or declare it as a field's alias." From an online search, it looked like this was do to "extended fields". I don't seemed to be using such fields. The only way I could get around this error was to break it into the smaller LINQ queries in my original question, which didn't produce the right results. Any suggestions?
Here's the code:
var query = (from bill in deacom.Dmbills
join so in deacom.Dmso1 on bill.Bi_s1id equals so.S1_id
join us in dbContext.Usersecurities on so.S1_name equals us.Cparentno
where us.Ctype == "JOBSITE"
&& us.Csiteno != null
&& us.Csiteno != string.Empty
&& bill.Bi_smid == iSalesNo
select new
{
ccustno = us.Ccustno.Trim(),
dispname = us.Dispname.Trim(),
csiteno = us.Csiteno.Trim(),
s1_name = so.S1_name.Trim()
}).Distinct();

One very crude approximation of your SQL query is:
var query = (from bill in deacom.Bills
join so in deacom.LubeDeacom on bill.bi_s1id equals so.s1_id
join us in deacom.UserSecurity on so.s1_name equals us.cparentno
where us.ctype = "JOBSITE"
&& us.csiteno != null
&& us.csiteno != string.Empty
&& bill.smid = '22'
order by us.csiteno
select new
{
us.ccustno.Trim(),
us.dispname.Trim(),
us.csiteno.Trim(),
so.s1_name.Trim()
}).Distinct();
// to check the translation result
string sql = query.ToString()
// to get the results
var result = query.ToList()
If this is not working for you, you can always fall back to Telerik Data Access ADO.NET API. Here is a documentation article how to use it.

Linq query to SQL query

I have a Linq Query that works well but I need to write the SQL Query
Can Anybody help me write it?
this query will search the database foreach a.h and a.HV in the view with the filters of time and model and in the end it checks the option Filter.M that if it is selected it will search for all the data selected in this DropDownCheckBoxes`
How can i write the this where and select part in SQL command?
ret1 = (from a in View
where
a.LastRefreshTime>=Filter.From && a.LastRefreshTime<=Filter.To && a.ModelCode == mdlCode &&
Filter.PN.Select(epn => epn.Substring(0, 11)).Contains(a.H) &&
Filter.PN.Select(epn => epn.Substring(14, 2)).Contains(a.HV)
select new RData
{
v = a.v,
Date = a.LastRefreshTime,
UserId = a.UserId,
M = a.Name,
}).Distinct().AsQueryable();
ret = ret1.Where(nr =>
Filter.M == null || !Filter.M.Any() || Filter.M.Contains(nr.M)
).ToList();

Here's a start for you
select a.v v,
a.LastRefreshTime "Date",
a.UserId,
a.Name
from a
where a.LastRefreshTime>= arg_filter_from
and a.LastRefreshTime<= arg_filter_to
and a.ModelCode = arg_mdlCode
.
.
.
In this query you'll need to replace 'arg_...' with the appropriate values or arguments you want.
Contains is roughly equivalent to "IN" in SQL. For example:
where a.Name in ('jim', 'bob', 'joe')
In can also be used with a subselect which is roughly what I think Filter.PN.Select is doing though I'm not a linq expert. Example:
where a.H in (Select foo from PN_Table)
Or simpler example continuing on the my previous name example:
where a.Name in (select first_name from table)

If we supposed that the Filter.PN list represent a table FilterPN in your sql database, that will be your converted code for the first linq query
select distinct a.v, a.LastRefreshTime, a.UserId, a.Name
from [view] a
where a.LastRefreshTime>= 'Filter.From' and
a.LastRefreshTime<='Filter.To' and a.ModelCode = 'mdlCode' and
exists(select top 1 * from FilterPN where Substring(epn, 1, 11) = a.H) and
exists(select top 1 * from FilterPN where Substring(eenter code herepn, 15, 2) = a.HV)
think to replace the enquoted variables with ur real values 'Filter.To'...

Multiple where statements in Entity Framework

Database structure sample:
Department Table
-DepartmentID
Facility Table
-Facility ID
-DepartmentID (FK)
-Block
-Level
-Name
-etc
I am trying to select from database from the EF using two where clause. I am not sure what went wrong at the where clause. I am stuck at it. Please help and advice. I have googled on the internet but cannot find the solution to it.
string departmentID = "SIT";
string block = "L";
string level = "4";
string name = "L.425";
using (var db = new KioskContext())
{
var facilitys = from f in db.Facilitys
Where clause to select departmentID where equals to SIT and also where any block or level or name contains any alphabets. Please advice how should i write the statement with two where clause. Thank You!
where f.Department.DepartmentID == departmentID
&& (f.Block.Contains("%" + block + "%") || f.Level.Contains("%" + level + "%")
|| f.Name.Contains("%" + name + "%"))
Remaining of the query statement to select all the facilities
orderby f.FacilityID
select new
{
f.FacilityID,
f.DepartmentID,
f.Description,
f.Block,
f.Level,
f.Name,
f.OpenHours,
f.CloseHours,
f.MaxBkTime,
f.MaxBkUnits,
f.MinBkTime,
f.MinBkUnits
};
foreach (var fac in facilitys)
{
FacObject facobject = new FacObject(fac.FacilityID, fac.DepartmentID, fac.Description, fac.Block, fac.Level,
fac.Name, fac.OpenHours, fac.CloseHours, fac.MaxBkTime, fac.MaxBkUnits, fac.MinBkTime, fac.MinBkUnits);
sqlFacList.Add(facobject);
}
}

Remove the "%" from the various Contains clauses, they are SQL cruft you do not need.
where f.Department.DepartmentID == departmentID
&& (f.Block.Contains(block)
|| f.Level.Contains(level)
|| f.Name.Contains(name ))
Remember LINQ is not just for SQL!