Using CTE on SQL Server Compact 3.5 - c#

This is my first post on stackoverflow, I hope one of many!
My question is this: I'm using CTE in a query to detect and remove duplicate records in a table. This query works just fine in SQL Server 2005 / 2008, but in Compact it throws an exception:
There was an error parsing the query.
[ Token line number = 1,Token line
offset = 1,Token in error = WITH ]
This is my query:
SqlCeConnection con = new SqlCeConnection(ConfigurationManager.ConnectionStrings["ADSLConnectionString"].ConnectionString);
SqlCeCommand command = new SqlCeCommand();
command.Connection = con;
command.CommandType = CommandType.Text;
command.CommandText = "WITH Dublicates_CTE(Username, accountid)" +
" AS" +
" (" +
" SELECT UserName,min(accountid)" +
" FROM Accounts" +
" GROUP BY username" +
" HAVING Count(*) > 1" +
" )" +
" DELETE FROM Accounts" +
" WHERE accountid IN (" +
" SELECT Accounts.accountid" +
" FROM Accounts" +
" INNER JOIN Dublicates_CTE" +
" ON Accounts.Username = Dublicates_CTE.Username" +
" AND Accounts.accountid <> Dublicates_CTE.accountid" +
" ) ";
con.Open();
command.ExecuteNonQuery();
Am I missing something, or does CTE not work on SQL Server Compact?


You can probably just nest the query, something like this (may have some syntax problems):
DELETE FROM Accounts
WHERE accountid IN (
SELECT Accounts.accountid
FROM Accounts
INNER JOIN (
SELECT UserName,min(accountid) accountid
FROM Accounts
GROUP BY username
HAVING Count(*) > 1
) Dublicates_CTE
ON Accounts.Username = Dublicates_CTE.Username
AND Accounts.accountid <> Dublicates_CTE.accountid
)


some things are not supported by the mobile version CTE and store procs for example will not work on the mobile version. You could use the express version which is also free


For the future here is a good link Differences Between SQL Server Compact and SQL Server


Some proof regarding whether SQL Compact 3.5's TSQL subset can use Common Table Expressions:
Tested with Visual Studio 2010 and a new SQL Compact .sdf file.

Related

SQL statement that only fetches the newest department which has been allocated

In my database i have the following rows and columns: https://i.imgur.com/ktUZY9d.jpg
My problem is the same employee has 3 different departments, but he is currently only active in 1. How do I change this SQL statement to only include the latest department he is in, which started in 2018 and ends in 2100, as seen by the ALLOCATION_START and ALLOCATION_END?
Query
string agentIdSubQuery = "SELECT DISTINCT " +
"AGENT_ID " +
"FROM " +
"KS_DRIFT.V_AGENT_ALLOCATION " +
"WHERE " +
"LENGTH(AGENT_INITIALS) < 5";
if(queryParams.SnapshotDate.HasValue)
agentIdSubQuery += " AND " + OracleConversion.ToOracleDate(queryParams.SnapshotDate) + " BETWEEN ALLOCATION_START AND ALLOCATION_END";
Update:
Tried alot of different solutions, but it crashes everytime, when i run through the debugger, further Down in this method this Query is causing me to crash:
string sql = "SELECT " +
"age1.* " +
"FROM " +
"KS_DRIFT.V_AGENT_ALLOCATION age1 " +
"INNER JOIN " +
"(" + agentIdSubQuery + ") age2 ON age1.AGENT_ID = age2.AGENT_ID " +
"ORDER BY " +
"AGENT_INITIALS";
Error Message:
{"Error occured during execution of SQL query: SELECT age1.* FROM KS_DRIFT.V_AGENT_ALLOCATION age1 INNER JOIN (SELECT max(DISTINCT AGENT_ID FROM KS_DRIFT.V_AGENT_ALLOCATION WHERE LENGTH(AGENT_INITIALS) < 5 AND '2018-08-15' BETWEEN ALLOCATION_START AND ALLOCATION_END AND (UPPER(AGENT_INITIALS) = 'JKKA')) age2 ON age1.AGENT_ID = age2.AGENT_ID ORDER BY AGENT_INITIALS."}
Also giving me an inner exception:
{"ORA-00904: \"AGE2\".\"AGENT_ID\": ugyldig identifikator"}
Debugging error screeenshot

Order it by the newest start date (descending) and select Top 1!
string agentIdSubQuery = "AGENT_ID " +
"FROM " +
"KS_DRIFT.V_AGENT_ALLOCATION " +
"WHERE " +
"LENGTH(AGENT_INITIALS) < 5 " +
" AND ROWNUM = 1 " +
" ORDER BY ALLOCATION_START DESC";
EDIT, changed Top 1 to Rownum = 1, for Oracle syntax

The table V_AGENT_ALLOCATION contains various departments per agent along with the dates the agent worked there. You want an agent's last department, which you get with Oracle's KEEP LAST. You haven't given us much information on your table, though. Let's say that the department is referenced by an allocation_id:
select
agent_id,
max(id_allocation) keep (dense_rank last order by allocation_start)
as id_current_allocation
from v_agent_allocation
group by agent_id
order by agent_id;

Your error message shows the final generated SQL:
{"Error occurred during execution of SQL query: SELECT age1.* FROM KS_DRIFT.V_AGENT_ALLOCATION age1 INNER JOIN (SELECT max(DISTINCT AGENT_ID FROM KS_DRIFT.V_AGENT_ALLOCATION WHERE LENGTH(AGENT_INITIALS) < 5 AND '2018-08-15' BETWEEN ALLOCATION_START AND ALLOCATION_END AND (UPPER(AGENT_INITIALS) = 'JKKA')) age2 ON age1.AGENT_ID = age2.AGENT_ID ORDER BY AGENT_INITIALS."}
If you format that so that it's readable, you get:
select age1.*
from ks_drift.v_agent_allocation age1
inner join
( select max(distinct agent_id
from ks_drift.v_agent_allocation
where length(agent_initials) < 5
and '2018-08-15' between allocation_start and allocation_end
and (upper(agent_initials) = 'JKKA') ) age2
on age1.agent_id = age2.agent_id
order by agent_initials
Two syntax issues should jump out:
There is a missing closing bracket after max(distinct agent_id (the distinct is also redundant)
The date literal is missing its date keyword - it should be date '2018-08-15' (or better still, a bind variable).
The brackets around (upper(agent_initials) = 'JKKA') are redundant but perhaps they arise from your generator logic and it's easiest to keep them.
I'm not sure how that relates to your 'newest allocated department' requirement, though. Some sample data (not a screenshot) would help.

If you're looking for the current department, you should compare the allocation dates with the current date.
Your query already has this WHERE clause, so it should work just fine for the example provided. But if you might want to specify that you need only ONE row using the ROWNUM special variable clause (assuming it's Oracle).
SELECT DISTINCT AGENT_ID
FROM KS_DRIFT.V_AGENT_ALLOCATION
WHERE LENGTH(AGENT_INITIALS) < 5
AND ALLOCATION_START < CURRENT_DATE AND CURRENT_DATE < ALLOCATION_END
AND ROWNUM = 1

Ambiguous column name in c# but not in SQL Server?

I am trying to execute a SQL command via c# but is telling me that I have an ambiguous column name. When I copy the query into SQL Server and execute it, it works fine. But through c#, it tells me
Ambiguous column name 'SPCode'
This is my SQL string in c#:
string yourSQLstring =
"INSERT INTO totalTable (Catalogue, totalTable.SPCode, ProjNo, Quantity, Spare) " +
"SELECT Catalogue, BOMtable.SPCode, ProjNo, SUM(Quantity) AS Quantity, (SELECT CEILING(CAST (.1 * SUM(Quantity) AS FLOAT))) AS Spare FROM MainSuperTable4 " +
"FULL OUTER JOIN BOMtable ON PartNo = Catalogue " +
"WHERE ProjNo= '" + SavingData.instance.projNumber + "' AND SPCode IS NOT NULL " +
"GROUP BY Catalogue, ProjNo, SPCode";
This the code copied into SQL Server and edited to remove c# stuff:
INSERT INTO totalTable (Catalogue, SPCode, ProjNo, Quantity, Spare)
SELECT
Catalogue, SPCode, ProjNo,
SUM(Quantity) AS Quantity,
(SELECT CEILING(CAST (.1 * SUM(Quantity) AS FLOAT))) AS Spare
FROM MainSuperTable4
FULL OUTER JOIN BOMtable ON PartNo = Catalogue
WHERE
ProjNo = 'P140134' AND SPCode IS NOT NULL
GROUP BY
Catalogue, ProjNo, SPCode
Not sure why it would work in SQL Server and then not in C#?
Thanks for any help!

Change your group by to this:
"GROUP BY Catalogue, ProjNo, BOMtable.SPCode";
Change your insert to this:
"INSERT INTO totalTable (Catalogue, SPCode, ProjNo, Quantity, Spare) " +

SQL Query to C#

I am writing this query that I want to transition into C# but I get an error.
The error:
Incorrect syntax near the keyword 'SELECT'.
Incorrect syntax near 'Products'.
Here is the query I am trying to run.
Select
[ID]
,[ProductTypeID]
,[SeriesID]
,[PartNumber]
,[Title]
,[SEOFriendlyURLTitle]
,[HTMLDescription]
,[HTMLValueAdded]
,[RoHSCompliant]
,[ULCompliant]
,[CECompliant]
,[Series]
,[BUSINESS_UNIT]
,[PACKAGING_TYPE]
,[PACK_QTY]
,[MOQ]
,[ORDER_MULTIPLE]
,[LEAD_TIME_WEEKS]
,[INTERNATIONAL_HARMONIZE_CODE]
,[ECCN_NUMBER]
,[COUNTRY_OF_ORIGIN]
,[IS_PART_STATIC_SENSITIVE]
,[IS_PART_LEAD_PB_FREE]
,[MOISTURE_SENSITIVITY_LEVEL_MSL]
,[REGISTERABLE]
,[TAPE_WIDTH]
,[TAPE_MATERIAL]
,[QtyOnHand]
,[QtyOnSalesOrder]
,[QtyOnBackOrder]
,[ProductLine]
,[Reach138Compliant]
,[ConflictMinerals]
,[WebEnabled]
,[DateAdded]
,[UpdateDate]
,[Reviewed]
,[ReviewedBy]
,[Deleted]
,[Book]
,[CustomSort]
,[ONEK]
,[FIVEK]
,[TENK]
,[TWENTYFIVEK]
,[Fifty]
,[OneHundred]
,[FiveHundred]
FROM Products.Products
Join
(SELECT Products.Prices.ProductID,
Max(IIf(Products.Prices.Code='ONEK',Products.Prices.Price,Null)) AS ONEK,
Max(IIf(Products.Prices.Code='FIVEK',Products.Prices.Price,Null)) AS FIVEK,
Max(IIf(Products.Prices.Code='TENK',Products.Prices.Price,Null)) AS TENK,
Max(IIf(Products.Prices.Code='TWENTYFIVEK',Products.Prices.Price,Null)) AS TWENTYFIVEK,
Max(IIf(Products.Prices.Code='Fifty',Products.Prices.Price,Null)) AS Fifty,
Max(IIf(Products.Prices.Code='OneHundred',Products.Prices.Price,Null)) AS OneHundred,
Max(IIf(Products.Prices.Code='FiveHundred',Products.Prices.Price,Null)) AS FiveHundred
FROM Products.Prices
GROUP BY Products.Prices.ProductID
) As pp
ON Products.Products.ID = pp.ProductID
Here is the query in C#:
y1.CommandText = "Select [ID], [PartNumber], [Book], [HTMLDescription], [HTMLValueAdded], [RoHSCompliant], [ULCompliant],[CECompliant], [Series], [BUSINESS_UNIT], [ONEK], [FIVEK], [TENK], [TWENTYFIVEK]" +
",[Fifty], [OneHundred], [FiveHundred], [PACKAGING_TYPE], [PACK_QTY], [MOQ], [ORDER_MULTIPLE], [LEAD_TIME_WEEKS], [INTERNATIONAL_HARMONIZE_CODE], [ECCN_NUMBER], [COUNTRY_OF_ORIGIN]" +
",[IS_PART_STATIC_SENSITIVE], [IS_PART_LEAD_PB_FREE], [MOISTURE_SENSITIVITY_LEVEL_MSL], [REGISTERABLE], [TAPE_WIDTH], [TAPE_MATERIAL], [Reach138Compliant], [ConflictMinerals], [WebEnabled]" +
"FROM Products.Products" +
"Join" +
"(SELECT Products.Prices.ProductID," +
"Max(IIf(Products.Prices.Code='ONEK',Products.Prices.Price,Null)) AS ONEK," +
"Max(IIf(Products.Prices.Code='FIVEK',Products.Prices.Price,Null)) AS FIVEK," +
"Max(IIf(Products.Prices.Code='TENK',Products.Prices.Price,Null)) AS TENK," +
"Max(IIf(Products.Prices.Code='TWENTYFIVEK',Products.Prices.Price,Null)) AS TWENTYFIVEK," +
"Max(IIf(Products.Prices.Code='Fifty',Products.Prices.Price,Null)) AS Fifty," +
"Max(IIf(Products.Prices.Code='OneHundred',Products.Prices.Price,Null)) AS OneHundred," +
"Max(IIf(Products.Prices.Code='FiveHundred',Products.Prices.Price,Null)) AS FiveHundred" +
"FROM Products.Prices" +
"GROUP BY Products.Prices.ProductID" +
") As pp" +
"ON Products.Products.ID = pp.ProductID" +
"where partnumber like '6%'";
Please help and thank you.

Take this segment as an example:
"FROM Products.Products" +
"Join" +
When these strings are concatenated, you get:
"FROM Products.ProductsJoin"
You need to include the spaces.
"FROM Products.Products " +
"Join" +

You are missing SPACES in front of FROM, Join, (SELECT etc... So when they are being output you are seeing FROM Products.ProductsJoin. You also want to prefix with # to protect against escaping issue. To fix you want:
y1.CommandText = #"Select [ID], [PartNumber], [Book], [HTMLDescription], [HTMLValueAdded], [RoHSCompliant], [ULCompliant],[CECompliant], [Series], [BUSINESS_UNIT], [ONEK], [FIVEK], [TENK], [TWENTYFIVEK]" +
",[Fifty], [OneHundred], [FiveHundred], [PACKAGING_TYPE], [PACK_QTY], [MOQ], [ORDER_MULTIPLE], [LEAD_TIME_WEEKS], [INTERNATIONAL_HARMONIZE_CODE], [ECCN_NUMBER], [COUNTRY_OF_ORIGIN]" +
",[IS_PART_STATIC_SENSITIVE], [IS_PART_LEAD_PB_FREE], [MOISTURE_SENSITIVITY_LEVEL_MSL], [REGISTERABLE], [TAPE_WIDTH], [TAPE_MATERIAL], [Reach138Compliant], [ConflictMinerals], [WebEnabled]" +
" FROM Products.Products" +
" Join" +
" (SELECT Products.Prices.ProductID," +
"Max(IIf(Products.Prices.Code='ONEK',Products.Prices.Price,Null)) AS ONEK," +
"Max(IIf(Products.Prices.Code='FIVEK',Products.Prices.Price,Null)) AS FIVEK," +
"Max(IIf(Products.Prices.Code='TENK',Products.Prices.Price,Null)) AS TENK," +
"Max(IIf(Products.Prices.Code='TWENTYFIVEK',Products.Prices.Price,Null)) AS TWENTYFIVEK," +
"Max(IIf(Products.Prices.Code='Fifty',Products.Prices.Price,Null)) AS Fifty," +
"Max(IIf(Products.Prices.Code='OneHundred',Products.Prices.Price,Null)) AS OneHundred," +
"Max(IIf(Products.Prices.Code='FiveHundred',Products.Prices.Price,Null)) AS FiveHundred" +
" FROM Products.Prices" +
" GROUP BY Products.Prices.ProductID" +
") As pp" +
" ON Products.Products.ID = pp.ProductID" +
" where partnumber like '6%'";

Just use verbatim string (#), copy your query and create it like:
string query =
#"Select
[ID]
,[ProductTypeID]
,[SeriesID]
,[PartNumber]
,[Title]
,[SEOFriendlyURLTitle]
,[HTMLDescription]
,[HTMLValueAdded]
,[RoHSCompliant]
,[ULCompliant]
,[CECompliant]
,[Series]
,[BUSINESS_UNIT]
,[PACKAGING_TYPE]
,[PACK_QTY]
,[MOQ]
,[ORDER_MULTIPLE]
,[LEAD_TIME_WEEKS]
,[INTERNATIONAL_HARMONIZE_CODE]
,[ECCN_NUMBER]
,[COUNTRY_OF_ORIGIN]
,[IS_PART_STATIC_SENSITIVE]
,[IS_PART_LEAD_PB_FREE]
,[MOISTURE_SENSITIVITY_LEVEL_MSL]
,[REGISTERABLE]
,[TAPE_WIDTH]
,[TAPE_MATERIAL]
,[QtyOnHand]
,[QtyOnSalesOrder]
,[QtyOnBackOrder]
,[ProductLine]
,[Reach138Compliant]
,[ConflictMinerals]
,[WebEnabled]
,[DateAdded]
,[UpdateDate]
,[Reviewed]
,[ReviewedBy]
,[Deleted]
,[Book]
,[CustomSort]
,[ONEK]
,[FIVEK]
,[TENK]
,[TWENTYFIVEK]
,[Fifty]
,[OneHundred]
,[FiveHundred]
FROM Products.Products
Join
(SELECT Products.Prices.ProductID,
Max(IIf(Products.Prices.Code='ONEK',Products.Prices.Price,Null)) AS ONEK,
Max(IIf(Products.Prices.Code='FIVEK',Products.Prices.Price,Null)) AS FIVEK,
Max(IIf(Products.Prices.Code='TENK',Products.Prices.Price,Null)) AS TENK,
Max(IIf(Products.Prices.Code='TWENTYFIVEK',Products.Prices.Price,Null)) AS TWENTYFIVEK,
Max(IIf(Products.Prices.Code='Fifty',Products.Prices.Price,Null)) AS Fifty,
Max(IIf(Products.Prices.Code='OneHundred',Products.Prices.Price,Null)) AS OneHundred,
Max(IIf(Products.Prices.Code='FiveHundred',Products.Prices.Price,Null)) AS FiveHundred
FROM Products.Prices
GROUP BY Products.Prices.ProductID
) As pp
ON Products.Products.ID = pp.ProductID";
(This will save you from figuring out errors in your concatenation, and would be more readable IMO)

SQL Returning rows with max value in column, within a specific range

I'm populating a DataTable in C# using an OleDbDataAdapter, and I am trying to get a query to work without much success.
The communication to/from the server works fine, as is evidenced by the simple query that returns all the records without any filter:
var commandText = string.Format("SELECT IsoShtRevID, LineID, Filename, Revision " +
"FROM dbo.PDSIsometricSheets WHERE SchemaName='{0}'", projectNo);
This gives me a list of about 8000 entries, however there is some redundancy.
There are multiple rows with the same LineID, but each one has a separate Revision value. I'm trying to get only the rows with the highest revision for each LineID, from a range of 0 to 5.
Here are a few of the attempts I've tried so far:
var commandText = string.Format("SELECT * FROM
(SELECT max(Revision) as LatestRev
FROM dbo.PDSIsometricSheets)
WHERE Revision < 5" , projectNo);
var commandText = string.Format("SELECT T.IsoShtRevID, T.LineID, T.Filename, T.Revision
FROM dbo.PDSIsometricSheets T
WHERE Revision =
(SELECT MAX(T1.Revision)
FROM dbo.PDSIsometricSheets T1
WHERE T1.IsoShtRevID = T.IsoShtRevID
)", projectNo);
var commandText = string.Format("SELECT IsoShtRevID, LineID, Filename, MAX(Revision) as LatestRevision
FROM dbo.PDSIsometricSheets WHERE SchemaName='{0}'
GROUP BY LineID, IsoShtRevID, Filename", projectNo);
Here are the questions I've visited so far trying to get this to work:
SQL Select only rows with Max Value on a Column
How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
Fetch the row which has the Max value for a column
Select Rows with Maximum Column Value group by Another Column
Everything above either returns the same thing as my original query, or just errors out from bad syntax. SQL is the furthest thing from my forte, and I'm trying to figure out if I'm limited in functionality by using a DataAdapter.
UPDATE:
Here's the latest iteration, using some advice from below:
var commandText = string.Format("SELECT IsoShtRevID, LineID, Filename, MAX(Revision) as MaxRevision " +
"FROM dbo.PDSIsometricSheets " +
"WHERE SchemaName='{0}' AND Revision <= 5 AND Revision >= 0" +
"GROUP BY IsoShtRevID, LineID, Filename", projectNo);
This filters out the revision to values between 0 and 5, however there are still multiple rows for LineID, each with different Revision numbers. It's like the Max command is being ignored...

Option 3 should work but if it doesn't is because FileName or IsoShtRevID change across Revisions. In that case, you can do this:
SELECT a.IsoShtRevID ,
a.LineID ,
a.Filename ,
a.Revision
FROM dbo.PDSIsometricSheets a
join (select max(Revision) as Revision, LineID
from dbo.PDSIsometricSheets where SchemaName ='{0}' ) x
join a on a.Revision = x.Revision and a.LineID=x.LineID
WHERE a.SchemaName = '{0}'

Finally got it thanks to the comments, reading more SQL, and viewing my commandstring diligently at runtime for typos.
var commandText = string.Format("SELECT T1.IsoShtRevID, T1.LineID, T1.FileName, T1.Revision " +
"FROM dbo.PDSIsometricSheets T1 " +
"INNER JOIN (" +
"SELECT LineID, MAX(Revision) as MaxRevision " +
"FROM dbo.PDSIsometricSheets " +
"WHERE SchemaName='{0}' AND Revision <= 5 AND Revision >= 0" +
"GROUP BY LineID" +
") T2 " +
"ON T1.LineID = T2.LineID AND T1.Revision = T2.MaxRevision ", projectNo);

How to Insert data into self reference table in sql server? [duplicate]

This question already exists:
Insert query for self reference of single table in sql server?
Closed 10 years ago.
What is the the query for inserting data into a self-referencing table. My table has 4 columns: SlNo, Name , ParentId , CurrentBanlance.
I tried this SQL query but it doesn't execute, is there any another way?
INSERT INTO Ptr_AcntInfo
SELECT
'" + txtAcName.Text + "',
(SELECT [SlNo] FROM Ptr_AcntInfo WHERE [Ac_Nm] = '" + cbxAcntGrpName.Text + "'),"+0.00+""
In this query I am getting the below error.
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

The query should look like:
"INSERT INTO PTR_ACNTINFO (COL1, COL2)
(SELECT " + txtAcName.Text + ", SINo FROM
PTR_ACNTINFO
WHERE [Ac_Nm]='" + cbxAcntGrpName.Text + "')"
Note this query is vulnerable to SQL Injection attacks.
http://en.wikipedia.org/wiki/SQL_injection
You should use parameterised queries or a stored procedure.
Example:
SQLCommand sqlCommand = new SQLCommand(connection);
sqlCommand.CommandText = "INSERT INTO PTR_ACNTINFO (SELECT $name, SINo FROM
PTR_ACNTINFO WHERE [Ac_Nm]='$accNo')"
sqlCommand.Parameters.AddWithValue("$name", txtAcName.Text);
sqlCommand.Parameters.AddWithValue("$accNo", cbxAcntGrpName.Text);
http://johnhforrest.com/2010/10/parameterized-sql-queries-in-c/

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