Transact SQL :: How To Create A 0-Many Relationship Between Two Tables
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.
NozzleTbl is another Table.At the moment I am referencing only one NozzleTbl thrice. But how can I reference a collection of NozzleTbl thrice?So that in the c# code I could access the collections as:
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 :
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
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.
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.
I use the following 3 sets of sql code in SQL Server Management Studio Express (SSMSE) to import the csv data/files to 3 dbo.Tables via CREATE TABLE & BUKL INSERT operations:
-- ImportCSVprojects.sql --
USE ChemDatabase
GO
CREATE TABLE Projects
(
ProjectID int,
ProjectName nvarchar(25),
LabName nvarchar(25)
);
BULK INSERT dbo.Projects
FROM 'c:myfileProjects.csv'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = ''
)
GO ======================================= -- ImportCSVsamples.sql --
USE ChemDatabase
GO
CREATE TABLE Samples
(
SampleID int,
SampleName nvarchar(25),
Matrix nvarchar(25),
SampleType nvarchar(25),
ChemGroup nvarchar(25),
ProjectID int
);
BULK INSERT dbo.Samples
FROM 'c:myfileSamples.csv'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = ''
)
GO ========================================= -- ImportCSVtestResult.sql --
USE ChemDatabase
GO
CREATE TABLE TestResults
(
AnalyteID int,
AnalyteName nvarchar(25),
Result decimal(9,3),
UnitForConc nvarchar(25),
SampleID int
);
BULK INSERT dbo.TestResults
FROM 'c:myfileLabTests.csv'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = ''
)
GO
======================================== The 3 csv files were successfully imported into the ChemDatabase of my SSMSE.
2 questions to ask: (1) How can I designate the Primary and Foreign Keys to these 3 dbo Tables? Should I do this "designate" thing after the 3 dbo Tables are done or during the "Importing" period? (2) How can I set up the relationships among these 3 dbo Tables?
Here is the error I am getting'role' table saved successfully'users' table- Unable to create relationship 'FK_users_role'. ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]ALTER TABLE statement conflicted with COLUMN FOREIGN KEY constraint 'FK_users_role'. The conflict occurred in database 'raintranet', table 'role', column 'role_id'.table rolerole_id intname varchar 50table usersusers_id introle_id inTrying to get table.role_id to be related to role.role_idAny help would be appreciated
hello all, I am new to SQL server and dont have a clue on how to create a one-to-one relationship in sql server2000. Say, I have a table 'A' with a PK <customer_id> and another table 'B' with a PK <order_id>. Now to define a one-to-one relation between them how to do that? thanks in advance.
What is the best way to relate the name in dbo.server and name in dbo.ProcessorInfo so this is a one to many? Obviously I can't set the name column as a PK as I have more than 1 record of the same value in it.
How do I create a relationship between two tables when the two columns that should connect each table have different names?
i.e. Table Person Column Name < -- > Table Employee Column Person Name
The two columns actually contain the same data type but different field name and size. I know this involves a series of steps. What are they? Could you please include some sample code.
I am having challenge to update the redemption table from the multiple card activation table. I want to update the redemption table with the activation date closest to the redeem date.
For example: Redeem date 20071223, I need to update the top row Date, Year, Period fields from the Card activation table.
Redeem date 20071228, I want to refer to the second row in the Card activation table date 20071228. Redeem date 20080316 or later, I want to use the last row in the card activation table date 20080316.
How to modify the update query to select the right activation row accordingly?
Below is my partial code I used but it always pick the 20071223 date to update my redemption table.
CREATE TABLE #Card ( [CardNumber] varchar(20) ,[ Date] int ,[ Year] int ,[ Month] int ,[ Period] int )
Hi, I come back again. Can anyone help me to create table with many-to-many relationship. Here is my three tables tbl_Networks ( NID int identity(1,1) primary key, NetworkName nvarchar(256) )
tbl_Categories ( CID int identity(1,1) primary key, CateName nvarchar(256), NID int )
tbl_Sim ( SID int identity(1,1) primary key, NID int, CID int, NameOfSim nvarchar(256) ) My problem is 1 value in tbl_Sim may have multiple values in table tbl_Categories and vice versal. And I don't know how to organise them
Hi. I get this error when i try to create a relationship in a db diagram (sql 2005) "'tblActivedir' table saved successfully 'tblClient' table - Unable to create relationship 'FK_tblClient_tblActivedir1'. Introducing FOREIGN KEY constraint 'FK_tblClient_tblActivedir1' on table 'tblClient' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints. Could not create constraint. See previous errors."
What i have is 2 tables. 1 named client 1 named activedir
In the client table the columns i want to bind with activedirtable are FR1 and DC1 I want to bind them in the ID of the activedir table (both, in different fk relationships) so that they get the id of activedir. Fr1 has an fk relationship with activedir (pk is activedir' id) and DC1 exactly the same in another fk. So i want both columns to comunicate with activedir. If p.e. activedir has 3 elements (a,b,c) when i delete element a then werever FR1 or DC1 have this element(binded to it's id) then the element will also be deleted (id of the element) from both FR1 and DC1 I don't want to set Delete and Update action to none because i want the element changed or deleted from activedir, to do the same on Fr1 or DC1 or both. Any help? Thanks.
Hi, I have metadata that stored my table structure and relationship. I would like to know is it possible to create table relationship programatically? Any sample?
Hi, I need help in creating a trigger before delete. The trigger should be in such a way that it should display a message, if there is any relationship with other table.
For example I have a table with employee details which have empid as primary key. I have another table with employee salary details where empid is foreign key. The trigger should check the relationship with these two tables. If I try to delete an emploeyee from employee details table and if there is a relationship of that employee with the salary table then the trigger should print a message. If there is no relationship then the trigger should perform the deletion. I want to create a trigger like this.
I have a problem related to create or show relationship digram in sql server 2005. Especially, I want to show relationship diagram that I established in sqlserver 2000 in sql server 2005 but I can't and I don't how to do it.
I am fairly new to SQL and I am currently trying to createa SQL table (using Microsoft SQL) that has a recursiverelationship, let me try to explain:I have a piece of Data let's call it "Item" wich may again contain onemore "Items". Now how would I design a set of SQL Tables that arecapable of storing this information?I tried the following two approaches:1.) create a Table "Item" with Column "ItemID" as primary key, somecolums for the Data an Item can store and a Column "ParentItemID". Iset a foreign key for ParentItemID wich links to the primarykey"ItemID" of the same table.2.) create separate Table "Item_ParentItem" that storesItemID-ParentItemID-pairs. Each column has a foreign key linked toprimary key of the "Item" Column "ItemID".In both approaches when I try to delete an Item I get an Exceptionsaying that the DELETE command could not be executed because itviolates a COLUMN REFERENCE constraint. The goal behind these FK_PKrelations is is that when an Item gets deleted, all childItems shouldautomatically be deleted recursively.How is this "standard-problem" usually solved in sql? Or do I inned toimplement the recursive deletion myself using storedprocedures or something ?
I am bring two fact tables and a Date Dim into my Power Pivot model. I try to create relationship where but Power Pivot just reverses them. When I create the relationship I get an info icon warning me it will be changed.Why can't I create a one to many relationship with fact table on many side and dimension on one side?Power Pivot will not let me mark my dimCalnder as a date table either. My date dim has surrogate key, year, month and monthlongname columns only...
i have a table where the feilds are 1.fromtable 2.fromfeild 3.fromcategory 4.totable 5.tofeild 6.tocategory. i have write a stored proceduer for creating 2 relationship between fromfeild & tofeild from the same value in from category & in tocategory. there r around 465 records in a table. so anyone can comeout for solution of this. hope soon i get a solution for this.
<----------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")
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")
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
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.
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.
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 )
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.
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?).
