I am trying to insert a record in SQL Server table using Dapper. I am able to insert records using ExecuteScalarAsync but it is not returning the impacted row count which is 1 in this case. I tried Execute, ExecuteScalar and query methods also.
sqlCommand = #"Insert into PAYMENTS (TRANSACTION_NO, MEMBER_ID, PAID_AMOUNT, PAID_DATE) VALUES ( #TransactionNo, #MemberId,#PaidAmount,#PaidDate);
var status = await con.ExecuteScalarAsync<int>(sqlCommand, details);
or
`var status = con.Execute<string>(sqlCommand, details);`
I just want to know if there is a way to retrieve this.
Just in case somebody is looking for this, I could get the count of rows impacted with ExecuteAsync
Related
In my db-driven app I need to perform insert into queries in which the value for one or more field comes from a subquery.
The insert into statement may look like the following example:
INSERT INTO MyTable (field_1, field_2)
VALUES('value for field 1', (SELECT field_x FROM AnotherTable WHERE ...))
At present I am doing it manually building the query:
String MyQuery = "INSERT INTO mytable (field_1, field_2)
VALUES('value for field 1', (SELECT field_x FROM AnotherTable WHERE ...))"; // Of course my query is far more complex and is built in several steps but the concept is safe, I end up with a SQL String
SQLiteDatabase= db = getWritableDatabase();
db.execSQL(MyQuery); // And it works flawlessy as it was a Swiss Clock
What i would like to do instead is:
SQLiteDatabase db = getWritableDatabase();
ContentValues values = new ContentValues();
values.put("field_1", "value for field 1");
values.put("field_2", ThisIsAQuery("(SELECT field_x FROM AnotherTable WHERE ...)"));
db.insert("MyTable", null, values);
db.close();
Where the fake method ThisIsAQuery(...) is the missing part, something that should tell the query builder that "SELECT.." is not a value but a query that should be embedded in the insert statement.
Is there a way to achieve this?
The whole point of the ContentValues container is to be able to safely use strings without interpreting them as SQL commands.
It is not possible to use subqueries with insert(). The only way to get a value from another table is by executing a separate query; in this case, ThisIsAQuery() would be stringForQuery() or longForQuery().
I have an ASP.NET Web API app using Oracle's Entity Framework driver. I have an entity defined for a view as follows:
CREATE OR REPLACE FORCE VIEW "PHASE_TWO"."EDIPRODUCT" ("ID", "STK_NUM", "TITLE", "ISBN", "UPC", "ITEMNO", "LONGFORMAT", "ABRIDGED", "WEB_TITLES_ID", "OCLC", "GENRE", "RELYEAR", "ORIG_REL", "LANG", "ORIG_STKNUM", "PUBLISHER", "PEOPLELIST", "SALES_ORG", "NOT_AVAIL") AS
SELECT sap_product.id,
sap_product.stk_num,
sap_product.longdesc AS title,
sap_product.isbn,
sap_product.upc,
sap_product.itemno,
sap_product.longformat,
sap_product.abridged,
mwt_product.web_titles_id,
mwt_product.oclc,
mwt_product.genre,
mwt_product.RELYEAR,
sap_product.orig_rel,
sap_product.lang,
sap_product.orig_stknum,
UPPER (publisher.name) publisher,
(SELECT LISTAGG (p.FULLNAME, ', ') WITHIN GROUP (
ORDER BY pp.rank) AS People
FROM people p
JOIN product_people pp
ON p.id = pp.peopleid
WHERE pp.stk_num = sap_product.stk_num
GROUP BY pp.STK_NUM
) PeopleList,
sppg.PRICING_TYPE as sales_org,
sap_product.not_avail
FROM sap_product
JOIN mwt_product ON sap_product.stk_num = mwt_product.stk_num
JOIN publisher ON mwt_product.publisherid = publisher.id
JOIN SAP_PRODUCT_PRICING_GROUP sppg on sppg.STK_NUM = mwt_product.stk_num and sppg.MARKED_FOR_DELETION = 0
WHERE mwt_product.WEB_PRODUCTS_ID > 0;
This view works as expected in SQL Developer. My getEDIPRODUCT function (yes, it's VB.NET) in my controller is as follows:
' GET: odata/EDIPRODUCTs
<EnableQuery>
Function GetEDIPRODUCT() As IQueryable(Of EDIPRODUCT)
Dim results As IQueryable
results = db.EDIPRODUCT
For Each _product In results
Console.Write(_product)
Next
Return results
End Function
I just added the for loop in order to inspect the results. What I see when I inspect the results is the same product record is returned for each row. The value for the ID is duplicate and the only other field that should have variant values (sppg.PRICING_TYPE as sales_org) also just repeats.
I have other views where this does not occur. The correct number of records are always returned, but the first record retrieved is always just repeated in each row of the result set. Any idea what could be going on here?
I never actually resolved this issue and am still interested in why this fails, but I rewrote the portion of the app that uses this view to use OData's $expand to retrieve the related data.
I have an ASP.NET web application (VB.NET) using an Oracle database. On an insert, I need to get the identity of the inserted row back. I am trying to use RETURNING, but I keep getting a value of 1 returned.
Dim strInsert As String = "INSERT INTO L.TRANSACTIONS (LOCATION_KEY, TRANS_CREATOR, TRANS_EMAIL, TRANS_PHONE) VALUES (:location_key, :trans_creator, :trans_email, :trans_phone) RETURNING TRANS_ID INTO :ukey"
Try
If oConn.State <> ConnectionState.Open Then
oConn.Open()
End If
Dim oCmnd As New OracleCommand(strInsert, oConn)
oCmnd.Parameters.Add("location_key", Session.Item("location").ToString.Trim())
oCmnd.Parameters.Add("trans_creator", Session.Item("userID").ToString.Trim())
oCmnd.Parameters.Add("trans_email", Session.Item("mail").ToString.Trim())
oCmnd.Parameters.Add("trans_phone", Session.Item("phone").ToString.Trim())
oCmnd.Parameters.Add("ukey", Oracle.DataAccess.Client.OracleDbType.Varchar2, System.Data.ParameterDirection.ReturnValue)
Dim strUkey As String = oCmnd.ExecuteNonQuery()
When I run the application, the record gets inserted and the TRANS_ID is incrementing but the returned value is always "1".
You're assigning the result of ExecuteNonQuery to the variable, rather than getting the value assigned to the parameter you've created. I believe you want to change the last line to something like this (untested):
oCmnd.ExecuteNonQuery
Dim strUkey As String = oCmnd.Parameters.GetParameter("ukey").Value
That's because the ExecuteNonQuery will return the number of rows affected:
For UPDATE, INSERT, and DELETE statements, the return value is the
number of rows affected by the command. For CREATE TABLE and DROP
TABLE statements, the return value is 0. For all other types of
statements, the return value is -1.
You can see that exist another question that covers the practices for doing it:
Best practices: .NET: How to return PK against an oracle database?
I am using the following code to get the ID of the latest form application started in my flex app, In the table the column is named id. However the following updates nothing to g.appID. The correct application ID makes it's way to the row Object but not to the g.appID variable. The only property that row appears to have is Max(id) which is the correct value that I need. but when I try g.appID = row.Max(id) I get a error saying Max is not a function, so I cant get either way to work currently. Anyone see what I could be doing wrong? Thanks for any help in advance!
// Get the ID
sqlStatement.text =
"SELECT Max(id) FROM applications";
sqlStatement.execute();
var result:SQLResult;
result = sqlStatement.getResult();
var row:Object = result.data[0];
g.appID = row.id;
Change your SQL to: SELECT Max(id) AS maxID FROM applications This will get you out of doing that wierd subselect your doing. This may also save you some processing depending on how often that query is running.
now change g.appID = row.id; to g.appID = row.maxID; and you should be good to go.
I have this SQL query:
SELECT Sum(ABS([Minimum Installment])) AS SumOfMonthlyPayments FROM tblAccount
INNER JOIN tblAccountOwner ON tblAccount.[Creditor Registry ID] = tblAccountOwner.
[Creditor Registry ID] AND tblAccount.[Account No] = tblAccountOwner.[Account No]
WHERE (tblAccountOwner.[Account Owner Registry ID] = 731752693037116688)
AND (tblAccount.[Account Type] NOT IN
('CA00', 'CA01', 'CA03', 'CA04', 'CA02', 'PA00', 'PA01', 'PA02', 'PA03', 'PA04'))
AND (DATEDIFF(mm, tblAccount.[State Change Date], GETDATE()) <=
4 OR tblAccount.[State Change Date] IS NULL)
AND ((tblAccount.[Account Type] IN ('CL10','CL11','PL10','PL11')) OR
CONTAINS(tblAccount.[Account Type], 'Mortgage')) AND (tblAccount.[Account Status ID] <> 999)
I have created a Linq query:
var ownerRegistryId = 731752693037116688;
var excludeTypes = new[]
{
"CA00", "CA01", "CA03", "CA04", "CA02",
"PA00", "PA01", "PA02", "PA03", "PA04"
};
var maxStateChangeMonth = 4;
var excludeStatusId = 999;
var includeMortgage = new[] { "CL10", "CL11", "PL10", "PL11" };
var sum = (
from account in context.Accounts
from owner in account.AccountOwners
where owner.AccountOwnerRegistryId == ownerRegistryId
where !excludeTypes.Contains(account.AccountType)
where account.StateChangeDate == null ||
(account.StateChangeDate.Month - DateTime.Now.Month)
<= maxStateChangeMonth
where includeMortgage.Contains(account.AccountType) ||
account.AccountType.Contains("Mortgage")
where account.AccountStatusId != excludeStatusId
select account.MinimumInstallment).ToList()
.Sum(minimumInstallment =>
Math.Abs((decimal)(minimumInstallment)));
return sum;
Are they equal/same ? I dont have records in db so I cant confirm if they are equal. In SQL there are brackets() but in Linq I didnt use them so is it ok?
Please suggest.
It is not possible for us to say anything about this, because you didn't show us the DBML. The actual definition of the mapping between the model and the database is important to be able to see how this executes.
But before you add the DBML to your question: we are not here to do your work, so here are two tips to find out whether they are equal or not:
Insert data in your database and run the queries.
Use a SQL profiler and see what query is executed by your LINQ provider under the covers.
If you have anything more specific to ask, we will be very willing to help.
The brackets will be generated by LINQ provider, if necessary.
The simplest way to check if the LINQ query is equal to the initial SQL query is to log it like #Atanas Korchev suggested.
If you are using Entity Framework, however, there is no Log property, but you can try to convert your query to an ObjectQuery, and call the ToTraceString method then:
string sqlQuery = (sum as ObjectQuery).ToTraceString();
UPD. The ToTraceString method needs an ObjectQuery instance for tracing, and the ToList() call already performs materialization, so there is nothing to trace. Here is the updated code:
var sum = (
from account in context.Accounts
from owner in account.AccountOwners
where owner.AccountOwnerRegistryId == ownerRegistryId
where !excludeTypes.Contains(account.AccountType)
where account.StateChangeDate == null ||
(account.StateChangeDate.Month - DateTime.Now.Month)
<= maxStateChangeMonth
where includeMortgage.Contains(account.AccountType) ||
account.AccountType.Contains("Mortgage")
where account.AccountStatusId != excludeStatusId
select account.MinimumInstallment);
string sqlQuery = (sum as ObjectQuery).ToTraceString();
Please note that this code will not perform the actual query, it is usable for testing purposes only.
Check out this article if you are interested in ready-for-production logging implementation.
There can be a performance difference:
The SQL query returns a single number (SELECT Sum...) directly from the database server to the client which executes the query.
In your LINQ query you have a greedy operator (.ToList()) in between:
var sum = (...
...
select account.MinimumInstallment).ToList()
.Sum(minimumInstallment =>
Math.Abs((decimal)(minimumInstallment)));
That means that the query on the SQL server does not contain the .Sum operation. The query returns a (potentially long?) list of MinimumInstallments. Then the .Sum operation is performed in memory on the client.
So effectively you switch from LINQ to Entities to LINQ to Objects after .ToList().
BTW: Can you check the last proposal in your previous question here which would avoid .ToList() on this query (if the proposal should work) and would therefore be closer to the SQL statement.