Index & FK Relationship On LookUp Tables
Jun 11, 2007
Hi!
It's been always said that it is best to put index on commonly joined fields in the table. But putting too much index on the table would cause the table to be slow on insert and update.
My question is, how do you deal with your fields that uses look up tables? Like for example for these fields
- CountryID(smallint)
- CreatedBy(int)
- ModifiedBy(int)
- Status(tinyint)
Those fields don't come a big part in the table, though when I query the table I always join them with their respective primary table to get their respective text value. Do I still need to put Index & FK relationships to these fields?
What fields are normally good candidates for index or fk relationships?
Thanks,
Enzo
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Oct 20, 2006
please explain the differences btween this logical & phisicall operations that we can see therir graphical icons in execution plan tab in Management Studio
thank you in advance
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Jun 27, 2007
Hi All,
Actually this is in regard to SCD Type 2 Dimension, Scenario is like that I am moving Fact table from some old source and I have dimensionA description value in fact which I want to replace with appropriate id from Dimension Table and that Dimension table is SCD Type 2 based on StartDate and EndDate and Fact Table doesn't contains direct date value rather there is timeId in Fact so to update the value in Fact table I have to Join Time Dimension table and other Dimension Table to replace fact Description with proper Id.
Lets assume DimensionA Structure
id
Description
StartDate
EndDate
Fact Table
id
measure1
measure2
TimeId
Description
Time Dimension
TimeId
Date
Day
Hour ...
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Dec 23, 2003
Can someone provide a sample of a stored procedure to add a 1-M relationship between two tables and how to add an index to a column?
Thanks for any help?
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Feb 26, 2008
Can anybody tell me when the index table is created? I have a Ole DB Command transformation that deletes rows from a table, and the pipeline continues on to a fuzzy lookup. The fuzzy lookup is returning matches to some of the rows which were delted in the aformentioned Ole DB Command. If the index table is created during pre-execute, this would make some sense to me since those rows which get deleted still exist before the pipeline reaches the Ole DB Command transformation which deletes those rows. If this is the case, is there a way to delay the index table creation? If this is not the case, has anybody else ran into anything like this...is there some solution? Thanks for any help.
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Mar 5, 2008
Greetings
My Fuzzy Lookup task works beautifully when it generates the lookup index every time it runs, but as I'm planning on running this hundreds of times I'd like it to maintain the index via the trigger. However when it attempts to install the trigger via sp_FuzzyLookupTableMaintenanceInstall I get:
Description: "A .NET Framework error occurred during execution of user-defined routine or aggregate "sp_FuzzyLookupTableMaintenanceInstall":
System.Data.SqlClient.SqlException:
Error number 8101 is invalid.
(I've not included the full stack trace as I figured this would be enough)
The table currently has an After Insert and After Update trigger. CLR integration is enabled in this database instance. Is there some other option I need to set somewhere?
Thanks!!
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May 29, 2007
Hello,
For one of my SSIS projects that does a fuzzy lookup on a table, I opted to create an index and
to maintain the stored index. The index got created and subsequent project execution was able to
use that index.
Now I want to update certain rows in that table. When I run the update statement I get the following error.
How can I retain the index and still be able to update the table?
update location_stage set batchid = 'APR07N'
where batchid is null and eventid = '20070528020041';
Msg 6549, Level 16, State 1, Procedure sp_FuzzyLookupTableMaintenanceInvoke, Line 0
A .NET Framework error occurred during execution of user defined routine or aggregate 'sp_FuzzyLookupTableMaintenanceInvoke':
System.Data.SqlClient.SqlException: Transaction is not allowed to roll back inside a user defined routine, trigger or aggregate because the transaction is not started in that CLR level. Change application logic to enforce strict transaction nesting.
System.Data.SqlClient.SqlException:
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.SqlInternalConnectionSmi.ExecuteTransaction(TransactionRequest transactionRequest, String transactionName, IsolationLevel iso, SqlInternalTransaction internalTransaction)
at System.Data.SqlClient.SqlInternalTransaction.Rollback()
at System.Data.SqlClient.SqlTransaction.Rollback()
at Microsoft.SqlServer.Dts.TxBestMatch.TableMaintenance.TranWrap(DataCleaningOperation c)
. User transaction, if any, will be rolled back.
The statement has been terminated.
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Oct 8, 2007
Hello,
The illustration below is for a customer dedupification project.
The Source file, containing customer name and address records, is conditionally split based on 7 ranges of substring(city,1,2) to distribute the load across 7 different threads for parallelization. Each customer record in the source file
is looked up against a reference table named Location_Stage for its existence using the Fuzzy Lookup
transformation.
The reference table Location_Stage has around 10 miilion+ records. The source file would normally have around 1 million
records.
I am wondering :
- if it would be possible to partition the Match Index of the reference table (NOT the reference table) into
7 partitions based on 7 ranges of substring(city,1,2) and maintain these partitions on different drives?
- if it is possible to specify a particular partition to be used by a FzLkup transformation?
- if the partitioning approach will improve the performance of the Fuzzy Lookups?
Source File Feed
|
Split data into 7 groups based on substring(city,1,2)
|
------------------------------------------------------------------------------------------------------------------------------------------
| | | | | | |
UnionAll UnionAll UnionAll UnionAll UnionAll UnionAll UnionAll
| | | | | | |
FzLkup FzLkup FzLkup FzLkup FzLkup FzLkup FzLkup
| | | | | | |
Split Split Split Split Split Split Split
| | | | | | |
------------- -------------- -------------- -------------- -------------- -------------- --------------
| | | | | | | | | | | | | |
<- - - - - - - Write the Canonicals and Dupes from each of these splits into database - - - - - - - - ->
Please advice.
Thanks.
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May 31, 2008
:rolleyes: can u send me deails for establish relationship of tables
i know namw of then but i need them by examples ans defination
as 1 simple
2 complex
3 muliple
u can send me ink if u get fron google also thanks
bye
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Dec 10, 2006
If you display the execution plan and run the following:SET STATISTICS IO ONgoSELECT ProductID, SupplierIDFROM ProductsWHERE SupplierID = 1I don't understand how come there is noBookmark Lookup operation happening to get theProductID?I only see an Index Seek happening on SupplierID.There is no composite index SupplierID + ProductIDso what am I not understanding here?Thank you
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May 14, 2007
<----------I
have 2 tables are: 'customers (parent)' and 'open_ac (child)'
<--------I
have tried to insert and update data into sql database by using textboxes
(don't use datagrid)
<--------My
tables details are below
<-------this
table uses for keeping user data
customers
fields:
Column
name
type
length
Description
cu_id
int
4
Primary key
Identifiers
cu_fname
nvarchar
20
allow null
first name
cu_lname
nvarchar
40 allow null
last name
cu_nat
nvarchar
20 allow
null
nationality
cu_add
nvarchar
40 allow null
address
cu_wplace
nvarchar
40 allow
null
workplace
cu_tel
nvarchar
10
allow
null
telephone
cu_fax
nvarchar
10
allow null
fax
cu_email
nvarchar
10 allow
null
email
<----the
open_ac uses for keeping register date/time of customers
open_ac
fields:
Column
name type
length
Description
cu_id
int
4
link key
op_date
date/time
8
register date
<----------my
code
Imports
System.Data.SqlClient
Public Class cus_reg
Inherits System.Web.UI.Page
Dim DS As DataSet
Dim iRec As Integer 'Current Record
Dim m_Error As String = ""
Public Property MyError() As String
Get
Return
m_Error
End Get
Set(ByVal Value As String)
m_Error =
Value
If
Trim(Value) = "" Then
Label3.Visible = False
Else
Label3.Text = Value
Label3.Visible = True
End If
End Set
End Property
Private Sub Page_Load(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles MyBase.Load
If Not Page.IsPostBack Then
Dim C1 As
New MISSQL
'DS =
C1.GetDataset("select * from customers;select * from open_ac;select * from
accounts")
DS =
C1.GetDataset("select * from customers;select * from open_ac")
Session("data") = DS
iRec = 0
Viewstate("iRec") = iRec
Me.MyDataBind()
Dim Dtr As
DataRow = DS.Tables(0).NewRow
DS.Tables(0).Rows.Add(Dtr)
iRec =
DS.Tables(0).Rows.Count - 1
viewstate("iRec") = iRec
Me.Label2.Text = DateTime.Now
Me.MyDataBind()
Else
DS =
Session("data")
iRec =
ViewState("iRec")
End If
Me.MyError = ""
End Sub
Public Function BindField(ByVal FieldName As String) As
String
Dim DT As DataTable = DS.Tables(0)
Return DT.Rows(iRec)(FieldName)
& ""
End Function
Public Sub MyDataBind()
Label1.Text = "Record : "
& iRec + 1 & " of " & DS.Tables(0).Rows.Count
txtcu_id.DataBind()
txtcu_fname.DataBind()
txtcu_lname.DataBind()
txtcu_add.DataBind()
txtcu_occ.DataBind()
txtcu_wplace.DataBind()
txtcu_nat.DataBind()
txtcu_tel.DataBind()
txtcu_fax.DataBind()
txtcu_email.DataBind()
End Sub
Here is
update code
Private Sub bUpdate_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles bUpdate.Click
Dim DT As DataTable = DS.Tables(0)
Dim DR As DataRow = DT.Rows(iRec)
'Dim DR1 As DataRow = DT1.Rows(iRec)
If DR.RowState = DataRowState.Added
Then
If
txtcu_id.Text.Trim = "" Then
Me.MyError = "please enter your id"
Exit Sub
End If
DR("cu_id")
= txtcu_id.Text
End If
If txtcu_fname.Text.Trim =
"" Then
Me.MyError =
"please enter your name"
Exit Sub
Else
DR("cu_fname") = txtcu_fname.Text
End If
If txtcu_lname.Text.Trim =
"" Then
Me.MyError =
"please enter your last name"
Exit Sub
Else
DR("cu_lname") = txtcu_lname.Text
End If
If txtcu_add.Text.Trim =
"" Then
Me.MyError =
"please enter your address"
Exit Sub
Else
DR("cu_add") = txtcu_add.Text
End If
If txtcu_occ.Text.Trim =
"" Then
Me.MyError =
"please enter your occupation"
Exit Sub
Else
DR("cu_occ") = txtcu_occ.Text
End If
If txtcu_wplace.Text.Trim =
"" Then
Me.MyError =
"please enter your workplace"
Exit Sub
Else
DR("cu_wplace") = txtcu_wplace.Text
End If
If txtcu_nat.Text.Trim =
"" Then
Me.MyError =
"Please enter your nationality"
Exit Sub
Else
DR("cu_nat") = txtcu_nat.Text
End If
If txtcu_tel.Text.Trim =
"" Then
DR("cu_tel") = DBNull.Value
Else
DR("cu_tel") = txtcu_tel.Text
End If
If txtcu_tel.Text.Trim =
"" Then
DR("cu_fax") = DBNull.Value
Else
DR("cu_fax") = txtcu_fax.Text
End If
If txtcu_email.Text.Trim =
"" Then
DR("cu_email") = DBNull.Value
Else
DR("cu_email") = txtcu_email.Text
End If
Dim Strsql As String
If DR.RowState = DataRowState.Added
Then
Strsql =
"insert into customers (cu_id,cu_fname,cu_lname,cu_add,cu_occ,cu_wplace,cu_nat,cu_tel,cu_fax,cu_email)
values (@P1,@P2,@P3,@P4,@P5,@P6,@P7,@P8,@P9,@P10)"
Else
Strsql =
"update customers set
cu_fname=@P2,cu_lname=@P3,cu_add=@P4,cu_occ=@P5,cu_wplace=@P6,cu_nat=@P7,cu_tel=@P8,cu_fax=@P9,cu_email=@P10
where cu_id =@P1"
End If
Dim C1 As New MISSQL
Dim cmd As SqlCommand =
C1.CreateCommand(Strsql)
C1.CreateParam(cmd,
"ITTTTTTTTT")
cmd.Parameters("@P1").Value = DR("cu_id")
cmd.Parameters("@P2").Value
= DR("cu_fname")
cmd.Parameters("@P3").Value = DR("cu_lname")
cmd.Parameters("@P4").Value = DR("cu_add")
cmd.Parameters("@P5").Value = DR("cu_occ")
cmd.Parameters("@P6").Value = DR("cu_wplace")
cmd.Parameters("@P7").Value
= DR("cu_nat")
cmd.Parameters("@P8").Value = DR("cu_tel")
cmd.Parameters("@P9").Value = DR("cu_fax")
cmd.Parameters("@P10").Value = DR("cu_email")
Dim Y As Integer = C1.Execute(cmd)
If Y > 0 Then
DR.AcceptChanges()
Else
Me.MyError =
"Can not register"
End If
<---------code above in this sub it can update only customers tables and when I tried to coding below<------------it alerts can not update
Dim DT1 As DataTable = DS.Tables(1)
Dim DR1 As DataRow = DT1.Rows(iRec)
If DR1.RowState = DataRowState.Added
Then
If
txtcu_id.Text.Trim = "" Then
Me.MyError = "Please enter id"
Exit Sub
End If
DR1("cu_id")
= txtcu_id.Text
End If
If Label2.Text.Trim = ""
Then
DR1("op_date") = Label2.Text
End If
Dim StrSql1 As String
If DR1.RowState =
DataRowState.Deleted Then
StrSql1 =
"insert into open_ac (cu_id,op_date) values (@P13,@P14)"
Else
StrSql1 =
"update open_ac set op_date=@P14 where cu_id=@P13"
End If
Dim C2 As New MISSQL
Dim cmd2 As SqlCommand =
C2.CreateCommand(StrSql1)
C2.CreateParam(cmd2, "ID")
cmd2.Parameters("@P1").Value = DR1("cu_id")
cmd2.Parameters("@P2").Value = DR1("op_date")
Dim Y1 As Integer = C2.Execute(cmd2)
If Y1 > 0 Then
DR1.AcceptChanges()
Else
Me.MyError =
"Can not register"
End If
End Sub
End Class
<------this
is class I use for connecting to database and call parameters....
MISSQL
class
Imports
System.Data.SqlClient
Public Class MISSQL
Dim PV As String =
"Server=web_proj;uid=sa;pwd=sqldb;"
Dim m_Database As String = "c1_itc"
Public Strcon As String
Public Sub New()
Strcon = PV &
"database=" & m_Database
End Sub
Public Sub New(ByVal DBName As String)
m_Database = DBName
Strcon = PV &
"database=" & m_Database
End Sub
Public Property Database() As String
Get
Return
m_Database
End Get
Set(ByVal Value As String)
m_Database =
Value
Strcon = PV
& "database=" & m_Database
End Set
End Property
Public Function GetDataset(ByVal Strsql As String, _
Optional ByVal DatasetName As String
= "Dataset1", _
Optional ByVal TableName As String =
"Table") As DataSet
Dim DA As New SqlDataAdapter(Strsql,
Strcon)
Dim DS As New DataSet(DatasetName)
Try
DA.Fill(DS,
TableName)
Catch x1 As Exception
Err.Raise(60002, , x1.Message)
End Try
Return DS
End Function
Public Function GetDataTable(ByVal Strsql As String, _
Optional ByVal TableName As
String = "Table") As DataTable
Dim DA As New SqlDataAdapter(Strsql,
Strcon)
Dim DT As New DataTable(TableName)
Try
DA.Fill(DT)
Catch x1 As Exception
Err.Raise(60002, , x1.Message)
End Try
Return DT
End Function
Public Function CreateCommand(ByVal Strsql As String) As
SqlCommand
Dim cmd As New SqlCommand(Strsql)
Return cmd
End Function
Public Function Execute(ByVal Strsql As String) As
Integer
Dim cmd As New SqlCommand(Strsql)
Dim X As Integer = Me.Execute(cmd)
Return X
End Function
Public Function Execute(ByRef Cmd As SqlCommand) As
Integer
Dim Cn As New SqlConnection(Strcon)
Cmd.Connection = Cn
Dim X As Integer
Try
Cn.Open()
X =
Cmd.ExecuteNonQuery()
Catch
X = -1
Finally
Cn.Close()
End Try
Return X
End Function
Public Sub CreateParam(ByRef Cmd As SqlCommand, ByVal
StrType As String)
'T:Text, M:Memo, Y:Currency,
D:Datetime, I:Integer, S:Single, B:Boolean, P: Picture
Dim i As Integer
Dim j As String
For i = 1 To Len(StrType)
j =
UCase(Mid(StrType, i, 1))
Dim P1 As
New SqlParameter
P1.ParameterName = "@P" & i
Select Case
j
Case "T"
P1.SqlDbType = SqlDbType.NVarChar
Case "M"
P1.SqlDbType = SqlDbType.Text
Case "Y"
P1.SqlDbType = SqlDbType.Money
Case "D"
P1.SqlDbType = SqlDbType.DateTime
Case "I"
P1.SqlDbType = SqlDbType.Int
Case "S"
P1.SqlDbType = SqlDbType.Decimal
Case "B"
P1.SqlDbType = SqlDbType.Bit
Case "P"
P1.SqlDbType = SqlDbType.Image
End Select
Cmd.Parameters.Add(P1)
Next
End Sub
End Class
<-------Thank you in advance<-------and Thank you very much for all help
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Aug 23, 2007
I am running SQL Server CE on Visual Studio 2005.
I have created 2 tables and wish to establish a relationship between the two tables.
However, I could not find a proper way to establish the connection.
Anyone can provide some help on this?
thank you.
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Mar 16, 2007
I'm building a Search Function with different pull down options. I have 9 Tables and 6 of them are not related.
How do I build an effecient SELECT?
Thanks I'm somewhat new to MSSQL.
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Apr 9, 2007
Hi
I have two database as Malathi,Indoo
In Malathi database i have
Employee Table AS
----------------------
Eid Int (PK)
Enam varchar(50)
In Indoo Database I have
Job table as
Eid int (FK)
Jid Int (PK)
Now how can i create relation b/w two tables of different database
Any One can help for this query
Malathi Rao
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May 8, 2007
Which way to go?
Have two separate programs(Visual Studio-Coded in Visual Basic) that share the same sql 2005 database(called Night Audit)
The tables are called RoomSettlement and Settlement.
They were separate tables and separate programs in the past because it was just exported in excel to a visual integrator that dumped the amounts into our accounting software.
Now needing to combine the two tables(that have no link) on to a single excel sheet daily where the tables have the same date:
Table: Room Settlement – Field: RoomSettlementDatetxt =
Table: Settlement – Field: SettlementDatetxt
Any Ideas on the best way to go? (Link the tables with a foreign key and primary key, maybe union based on date, or any easier suggestion with out having to change a lot of the program )
Room Settlement Table
PrimaryKey
Availabilitytxt
Ratetxt
Othertxt
Arrivalstxt
departurestxt
GuestCounttxt
HotelOccupancytxt
AverageDailyRatetxt
RevPahrtxt
HotelRevenuetxt
ownerrentaltxt
hoteltransienttxt
hotelcorptxt
hotelgovtxt
hotelpacktxt
hotelexpediatxt
hotelsynxistxt
hotelothertxt
rentalpooltxt
employeetxt
Hotelnightstxt
activitestxt
Bonustxt
Golftxt
Tvinternettxt
laundrytxt
misctxt
petstaytxt
Telephonetxt
Purchaseunittxt
Damageincometxt
resalerevtxt
latefeestxt
IntrestIncometxt
Taxestxt
RoomSettlementDatetxt
sitetxt
senddatetxt
Settlement Table:
PrimaryKeyintUn
PreviousGuesttxt
TransferCityLedgertxt
ActivityGuesttxt
transferfromadvdepositguesttxt
transfromguesttoguesttxt
GuestchagefromInctxt
Guestnetcashtxt
Guestcheckstxt
guestpaidout
guestlockboxtxt
guestaetxt
GuestDinerstxt
GuestDiscovertxt
GuestMastercardtxt
GuestVisatxt
guestdepositchangecashtxt
guestnetchangetxt
guestnewbalancetxt
guestsystembalancetxt
guestvariance
PreviousCity
ActivityCitytxt
Citynetcash
Citychecks
citypaidouttxt
citylockboxtxt
cityaetxt
CityDinerstxt
CityDiscovertxt
CityMastercardtxt
CityVisatxt
citydepositchangecashtxt
citynetchangetxt
citynewbalancetxt
citysystembalancetxt
cityvariance
Sitetxt
DateStamptxt
SettlementDatetxt
Thanks JK
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Sep 15, 2015
I have query with an expensive Key Lookup on a joined table. The predicate is the column that I'm joining on, and the output list contains two columns from the joined table.
I've created a basic non-clustered index covering the predicate column and include-ing the two output columns. However, the execution plan ignores this, and insists on using the primary key of the joined table to do the expensive key lookup. I've tried adding the included columns to the index directly and there's no change. I've also tried running dbcc freeproccache and no change.
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Jan 13, 2004
Hi, I am trying to create a create for two table A and table B which have no relationship each time. For TableA, there are 3 columns like ID, APoints1, APoint2. For Table B, there are also 3 columns as ID, Qty, BPoints. There is no internal relationship for these two tables. But there may be same ID inside A and B for some records. Now I want to create a datagrid for displaying the information as :
ID, Sum(A.APoints1 + A.APoints2) - Sum(B.Qty * B.BPoints) WHERE A.ID = B.ID
Please Notice that I can't use directly SQL script as following from table A and table B because there is no relationship for Table A and Table B, otherwise the recult set would be wrong:
Select A.ID, Sum(A.APoints1 + A.APoints2) - Sum(B.Qty * B.BPoints) WHERE A.ID = B.ID group by A.ID
May I know is there solution for it?
Thank you very much!
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Mar 20, 2007
Inner join vs outer join:
Inner join will remove rows from the first table if there is not a corresponding row in the 2nd table. Outer join will keep the rows, and use all NULL values to fill in the gaps in the 2nd table.
In general outer joins are more likely to grow a result set and inner joins are more likely to shrink one (though that will depend on the data and the query). For this reason, it is usually better when building complex queries to try to do your inner joins before your outer joins, because then you will keep your result set smaller for longer and thus the later joins can run faster.
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Feb 2, 2006
I am relatively new to MS SQL (not a novice, but hardly a master).
I am working on a content management application for a magazine publisher. It’s written in ASP (VB Script) and being created on Dreamweaver 8 with an MS SQL 2000 database. Now, I’m trying to decide the best and fastest approach to coding a complex INSERT and UPDATE function. My question isn’t as much about the SQL (although that will probably come up after I decide how to do this), but about the procedural steps and approach I shuold be taking to do this.
Reporters will use an online form to enter their story into the system. It collects the usual data: Headline, byline, story content, and the story category (feature, opinion, entertainment, business, sports, etc.). Each story may belong to MULTIPLE categories (feature & business, for example).
So, I’ve created three tables to support this many-to-many realtionship:
Story
Category
StoryCat (a junction table with the IDs from both the other tables).
The online form has a dropdown menu which pulls the available categories from the Categories table. When the reporter has entered the data I use ASP to performs the insert just as you would expect it to.
The next step needs to be to update the StoryCat table so that it creates a new record with the StoryID of the record it just inserted, along with the CategoryID that was in that record.
------------------
As I said, I’m not sure of the best way to do this.
Should I just pull back the last record inserted and then create a procedure that would insert into the StoryCat table (which is what I’m thinking of doing on the confirmation page), or is there another approach I should take (perhaps some sort of temporary table or stored procedure?).
Any and all help will be greatly appreciated.
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Jul 30, 2007
Hi all,
I just ran across an issue on a SQL 2000 sp4 db where RI was being maintained solely with triggers. I am attempting to change the primary key of a parent table and cascade the results to all its children without using the vendor-supplied trigger code (long story...) using an INSTEAD OF trigger.
My question is: does SQL Server create any kind of relationship between the inserted and deleted tables that I could exploit since the key field is unavailable?
I am trying to avoid having to add a surrogate key to each of the children just for this activity (as there are many M rows in each and no other suitable unique column combinations that span all the child tables).
-DC
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May 25, 2015
I have two tables, Inspections and InspectionDetails. The InspectionDetails only contains information if an inspection found violations. Some inspections don't look for violations so inspectiondetails would have no entry.How can I create a 0-Many relationship between these two tables?Inspection Table has : InspectionID, InspectionDate, TypeofInspection, Inspector..InspectionDetail Table has : DetailID (an auto-incrementing identity column), InspectionID, SectionViolated, ViolationDescription, InspectorNotes.
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Apr 27, 2004
Hi,
I'm trying to make relationship between two tables "reservation" and "charges". The column is "booking_ticket". Its giving me following error :
'reservations (akr)' table saved successfully
'charges (akr)' table
- Unable to create relationship 'FK_charges_reservations'.
ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]ALTER TABLE statement conflicted with COLUMN FOREIGN KEY constraint 'FK_charges_reservations'. The conflict occurred in database 'limp', table 'reservations', column 'booking_ticket'.
I used to make relationship before , but never found this problem.
Kindly guide me to solve it.
Regards,
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Jul 23, 2005
I need to create a relationship between a local table and tables on alinked server. I used the design table wizard and selected therelationship property wizard. In the reslationship property wizard,the tables that I need to get the keys from in the linked server do notshow up. Is there a way to do this, or I simply don't have enoughpermission to tables in the linked server. On the local server, theSecurity tab of linked server property has Local Loging "sa", RemoteUser "sa" and Remote Password "****". Thanks for your help.
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Mar 20, 2008
Hello,
I have two databases in sql server. I'll call them DB1 and DB2. I have a table in DB2 that needs to form a relationship with a table in DB1. When I attempt to add a relationship I only see tables in DB2. Can this be done?
Thanks,
Mark
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Sep 8, 2015
I am developing a database in PowerPivot and I am wondering how to create many relationships between the same 2 tables. All relationships must be active.
Let me give you a DUMMY example: let's say that the database has 2 tables, the Employee table and Manager table:
->Employee Table: Employee_name, Previous_Manager, Current_Manager
->Manager Table: Manager_Name
Because I have 2 manager fields in the employee table, I need to create 2 links between the employee and manager tables:
-> Link 1: Previous_Manager ---- Manager_Name
-> Link 2: Current_Manager ---- Manager_Name
Right now, one of the links is inactive...
Is there a way in PowerPivot to create 2 active links like that ?
I have Power Pivot version 11.0.3000.0 on Excel 2010 on Windows 7
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Jun 15, 2006
Supose I have two records in a parent-child relationsuip (actually I have many more such records). Does SSIS offer any support ask for inserting one record into the parent table, the other into the child table, and updating the foreign key of the child to point to the parent?
TIA,
Barkingdog
P.S. I have to do just this as part of the datawarehouse test I'm running. Seems like a common task but I don't recall anything in SSIS addressing the issue.
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Dec 19, 2003
Ok say I would like to build a table for of the following questions(say 6 questions for the sake of argument):
Do I just stored the index of the radiobuttonlist. What are some resources that I could look at. Should I make a look up table.
5) If money were no object, I would live . . .
Prefer not to say
On a tropical island
In a New York penthouse
In an English castle
On a Texas ranch
In a Malibu beach house
In a mountain retreat (Selected)
On the moon
None of the above
1 --->
2 --->
3 --->
4 --->
5) --->6 This is the question we are looking at.
6 --->
How should I create the database table for the above example.
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Aug 22, 2007
I have facing a design problem and unable to justify which design to choose for my data model.
Usually, what we have is like data tables and reference tables to store data in those data tables.
My database has tables with 20-30 columns in them. And most of them (though not all of them), stores data from some reference tables. Meaning each column has an associated reference table where it stores possible list of values for that particular column. Sort of data domain for that column. FYI, My database is related to medical field.
For example, A table that has a varchar(40) column called "Differentiation". It can only store values from following list:
- Undifferentiated
- Moderate
- Poor
- Poor - Moderate
- Moderate - well
Now, to implement this, simple solution would be to have a reference table where I can store all these possible values...And then have just a reference of each data item into my "Differentiation" column in the table.
This is simplest and probably the best solution for such thing and i can also have referential integrity implemented for this.
But now if we look at the bigger picture, my database is growing and I have about 80 tables which I need to create where most of the columns will have different reference tables like I mentioned above. Approximate number of reference tables is 300 tables. All the reference table will have same structure, with different values for different columns.
Now, what seems to me is, because the table structure is same for every column, rather than having 300 different tables, I can only have 2 tables, where I can put all these reference values into these 2 tables.
Like,
Table 1 :
This table can have name of the reference table like "differentiationlist" etc.
Table 2:
It has reference to the reference table list in Table 1 discussed above and all the values that are part of that reference table can go in this table with its reference.
But problem with this is, because all the reference tables are in these two tables, I don't know how to implement referential integrity in this design.
Does anyone have any idea or solution for situation like this?
Thanks,
Ujjaval
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Aug 9, 2006
I used a function to create dataset as below:
Public Function GetSQLDataSet(ByVal SQL As String) As DataSet
......
MyConnection = New SqlConnection(MyConnectionString)
MyCommand = New SqlCommand(SQL, MyConnection)
MyDataSet = New DataSet
MySQLDataAdapter = New SqlDataAdapter(MyCommand)
MySQLDataAdapter.Fill(MyDataSet)
......
End function
It works fine.
How to code a function to return a dataset in which there are two tables and relationship?
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May 26, 2004
Hi All,
Currently i am defining a simple relationship between
Customers->Orders->Order Details through the Database Diagrams feature in
the SQL 2K. Using the Server Explorer, i can see the Database Diagrams, but
when i try to "drop" the Database Diagrams into the page, it gives the error
message.
I would like to know the procedures to retrieve the database relationships
from Database Diagrams and manipulate them through ADO.NET
I prefer to "convert" already defined relationship using SQL Server Database
Diagrams into XSD file or probably there is another method to "read" those
relationship and manipulate them.
Thank you very much for all your help
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May 12, 2014
I would like to create a auto relationship between tables.
Currently I am using Northwind DB with tables (Orders, OrderDetails, Customers)
Orders ( OrderId, Customerid)
OrderDetails(OrderId)
Customers(CustomerID)
Now, if the user wants to generate a relationship automatically based on SAME FIELD Names.
What is the approach?
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Jul 31, 2014
I have two table studenTtable and courseTable which is each student take more than one course . 1:M...for example Student1 take 2 courses (C1 , C2). Student2 take 3 courses (C1,C2, C3).I need to create a table/View that contain student information from StudentTable plus all the courses and the score for each course from CoursTable in one row.
for example Row1= Student1_Id ,C1_code ,C1_name ,C1_Score ,C2_code,C2_name ,C2_Score Row2= Student2_Id,C1_code, C1_name,C1_Score,C2_code ,C2_name ,C2_Score , C3_code,C3_name,C3_Score
and since Student one just have two courses , I should enter NULL in 'Course 3 fields'.My Struggle is in the insert statement I tried the following but it show an error
Insert Into Newtable ( St_ID, C1_code,c1_name, C1_Score ,C2_code ,C2_name,C2_score,C3_code ,C3_name,C3_score)
Select (Select St_ID from StudentTable) , (Select C_code,c_name,c_Score from Coursetable,SudentTable where course.Stid =Studet.stid) , (Select C_code,c_name,c_Score from course ,student where course.Stid =Studet.stid ), (Select C_code,c_name,c_Score from course ,student where course.Stid =Studet.stid );
I'm fully aware that the New table/View will break the rules of normalization ,but I need it for specifc purpose.I tried also the PIVOT BY functionality but no luck with it .I also tried writing a code using Matlab (because it is high level sw that it is easy to learn for people not expret in programming as me) but didn't know how to combine the Student and Courses Matrices in my loop.
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Nov 13, 2006
I am trying to insert data into two tables with a SSIS package. One table has a foreign key relationship to the other table's primary key. When I try to run the package, the package will just seems to hang up in bids. I have found two ways around the issue but I don't like either approach. Is there a way to set which table gets insert first?
If I uncheck the check constraints option on the child table, the package will run very quickly but this option alters the child table and basically disables the constraint. I don't like this option because it is altering the database.
The second approach is to set the commit level on both tables to say 10,000 and make sure that the multicast component has the first output path moved to the parent table. I don't like this option because I am not sure if the records are backed out if the package should abend after records have been committed.
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