I get this error because I have a SQL Server table with a column of type “text”.
The text data type cannot be selected as DISTINCT because it is not comparable
Any way to resolve this without changing the data type?
Here is my linq statement (it’s long):
var query = (from s in db.tblSuppliers
join p in
(
from p1 in db.tblSupplierPricingSchemes
select new
{
p1.SupplierID,
p1.PSLangPairID,
p1.CustomerID,
p1.PSLanguageStatus,
p1.PSPriceBasis,
p1.PSMinFlatCharge,
p1.PSTrxPrf,
p1.PSNoMatch,
p1.PSFuzzy,
p1.PS100Match_Rep,
p1.PSTrxOnly,
p1.PSPrfOnly,
p1.PSLinquisticHourlyRate,
p1.PSDTPType,
p1.PSDTPRate,
p1.PS_FZ50,
p1.PS_FZ75,
p1.PS_FZ85,
p1.PS_FZ95,
p1.PS_FZ100,
p1.PS_FZREPS,
p1.PSPerfectMatch
}
) on s.SupplierID equals p.SupplierID
join p2 in
(
from p in db.tblSupplierPricingSchemes
where custID.Contains(p.CustomerID) && p.PSLangPairID == languagePairID
group p by new { p.SupplierID, p.PSLangPairID, p.PSPriceBasis } into g
let CustomerID = g.Max(uh => uh.CustomerID)
select new
{
g.Key.SupplierID,
g.Key.PSLangPairID,
g.Key.PSPriceBasis,
CustomerID
}
) on p.SupplierID equals p2.SupplierID
join b in db.tblPricingBasis on p.PSPriceBasis equals b.PricingBasisID
join ss in db.tblSupplierStatus on p.PSLanguageStatus equals ss.SupplierStatusID into g1
from ss in g1.DefaultIfEmpty()
join l in db.tblLangPairs on p.PSLangPairID equals l.ProductID
where l.ProductID == languagePairID
&& p.PSLangPairID == p2.PSLangPairID
&& p.CustomerID == p2.CustomerID
&& p.PSPriceBasis == p2.PSPriceBasis
select new PreferredSupplier
{
SupplierID = s.SupplierID,
//SupplierName = s.CompanyName != null ? s.CompanyName + "-" + s.SupplierFirstName + " " + s.SupplierLastName
// : s.SupplierFirstName + " " + s.SupplierLastName,
SupplierName = s.CompanyName != null
? s.SupplierFirstName != null || s.SupplierLastName != null
? s.CompanyName + "-" + s.SupplierFirstName + " " + s.SupplierLastName
: s.CompanyName
: s.SupplierFirstName + " " + s.SupplierLastName,
CompanyName = s.CompanyName,
SupplierFirstName = s.SupplierFirstName,
SupplierLastName = s.SupplierLastName,
SupplierStatus = p.CustomerID == customerID ? "Team Member" : ss.SupplierStatus,
Email = (string)s.SupplierEmails,
Rate = (s.VolumeDiscountType == 1 ? // Percentage
//if the volume discount is as percentage then get the rate and multiple it by 1 - the discount percentage
((words > s.VolumeDiscountAmount && (task == "TM No Match" || task == "Translation/Proofreading")) ? 1 - s.VolumeDiscountValue : 1) *
(
rateField == "PSTrxPrf" ? p.PSTrxPrf :
rateField == "PSNoMatch" ? p.PSNoMatch :
rateField == "PSFuzzy" ? p.PSFuzzy :
rateField == "PS100Match_Rep" ? p.PS100Match_Rep :
rateField == "PSLinquisticHourlyRate" ? p.PSLinquisticHourlyRate :
rateField == "PSDTPRate" ? p.PSDTPRate :
rateField == "PS_FZ50" ? p.PS_FZ50 :
rateField == "PS_FZ75" ? p.PS_FZ75 :
rateField == "PS_FZ85" ? p.PS_FZ85 :
rateField == "PS_FZ95" ? p.PS_FZ95 :
rateField == "PS_FZ100" ? p.PS_FZ100 :
rateField == "PS_FZREPS" ? p.PS_FZREPS :
rateField == "PSPerfectMatch" ? p.PSPerfectMatch : null
) :
// Discount in Amount
// Take the Rate and substract the amount to discount
(
rateField == "PSTrxPrf" ? p.PSTrxPrf :
rateField == "PSNoMatch" ? p.PSNoMatch :
rateField == "PSFuzzy" ? p.PSFuzzy :
rateField == "PS100Match_Rep" ? p.PS100Match_Rep :
rateField == "PSLinquisticHourlyRate" ? p.PSLinquisticHourlyRate :
rateField == "PSDTPRate" ? p.PSDTPRate :
rateField == "PS_FZ50" ? p.PS_FZ50 :
rateField == "PS_FZ75" ? p.PS_FZ75 :
rateField == "PS_FZ85" ? p.PS_FZ85 :
rateField == "PS_FZ95" ? p.PS_FZ95 :
rateField == "PS_FZ100" ? p.PS_FZ100 :
rateField == "PS_FZREPS" ? p.PS_FZREPS :
rateField == "PSPerfectMatch" ? p.PSPerfectMatch : null
) - (s.VolumeDiscountValue == null ? 0 : s.VolumeDiscountValue)),
//PSMinFlatCharge = p.PSMinFlatCharge,
MinimumFee = p.PSMinFlatCharge,
//Basis = b.PricingBasisDesc,
Basis = task == "DTP" || task == "DTP Edit" ? p.PSDTPType : b.PricingBasisDesc,
StatusOrder = p.CustomerID == customerID ? 0 : p.PSLanguageStatus == null ? 1000 : p.PSLanguageStatus
}).Distinct();
Simple answer is “don’t use text”.
It was deprecated for varchar(max) years ago when SQL Server 2005 was released.
The code you have is issuing SELECT DISTINCT.
You need to fix the model/tables so it isn’t
textdatatype