Database Design Selecting Multiple Different Child Tables
Sep 19, 2000
I want to have a linking table say for example we call this a claim. Based on the claim number you need to relate to one of say 6 different types of claims. The types of claims related to their own individual parent table. (individual because each type of claim tracks completely different information) does anyone have an idea on how to set this up?
Sample Structure
table = Claim
Field 1 = ClaimTypeA_ID
Field 2 = ClaimTypeB_ID
Field 3 = ClaimTypeC_ID
Field 4 = ClaimTypeD_ID
Field 5 = ClaimTypeE_ID
Field 6 = ClaimTypeF_ID
The six field relate to the 6 different tables ID.
If I do this how do I store the data? put 0's in each of the claim types that are not used???
Any suggestions would be appreciated.
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Apr 17, 2007
I don't know if this is the right forum but...
In a parent/child table structure (order/orderdetail) I have used identity columns for the orderdetail or compund primary keys. I find a single identity column on the detail table easier to manage (with a fk to the parent) but what ends up bieng easiest for the user is to have an order (say #3456) and detail items listed sequentially from 1 to n. This reflects a compound key structure but generating the 2nd field is a pain. Is there any way to tie an identity field to the parent key so that it will generate this number for me automatically?
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Nov 4, 2004
i want to select all the user tables within the database and then all the records with in each table.
plz tell me one query to do this.
ex: suppose x and y are user tables and x contain 10 records and y contains 20 records . i want a query which displays all 30 records together.
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Apr 2, 2007
Hi all.
I'm trying to select from multiple table in one select statement but i'm having problems. Here is the code i'm trying:
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[snow_ors_additionalInfoRead]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[snow_ors_additionalInfoRead]
GO
CREATE PROCEDURE dbo.snow_ors_additionalInfoRead
@Reference int
AS
SELECT
Account.CanTravel,
Account.SEEmployee,
Account.WorkHours,
Account.DrivingLicence,
Account.CriminalConvictions,
Account.CriminalConvictionsDetails1,
Account.CriminalConvictionsDate1,
Account.CriminalConvictionsDetails2,
Account.CriminalConvictionsDate2,
Account.CriminalConvictionsDetails3,
Account.CriminalConvictionsDate3,
Application.VacancyMonitoring,
Application.VacancyMonitoringDetails
FROM Account, Application
WHERE Account.Reference = @Reference AND
Application.reference = @Reference
GO
Any help at all would be great.
thanks people.
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Aug 13, 2006
Hi there,I'm new to sql and thus I'm having problems with a specific query which Ihope you guys can help me with.Basicly I have a few tables which I'm trying to do a query on:Table groups contains information about specific groups e.g. "Windows" or"Unix".Table users contains information about specific users e.g. "a", "b" or "c".Table users_groups contain information about group relationship (a user canbe in multiple groups) e.g. (a, Windows), (b, Unix), (a, Unix).In this case user c is ungrouped.Now I'd like to find the users which does belong to group Windows and thosewho do not:select distinct username from users_groups where groupname = "Windows" orderby username asc;This works pretty well for finding users in the specific group. In this casethe result is a.However I'd like to get the opposite result (b and c) but I'm stuck.The problem is that I'd like a list of all users excluding those which arein "Windows"Here is a partial query:select distinct users.username from users left join users_groups onusers.username = users_groups.username where users_groups.username is nullorder by users.username asc;This only gives me those users who are not grouped at all. This mean thatuser b is not in those results.Please advise.Thanks in advance.-- Henrik
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Feb 19, 2004
Hello,
Is it possible to get a list of rows from Multiple tables which have the same Column Name. I have 3 tables which comtain similar info
and I want to get a list of Names
the structure is
ID;Name;Address;Phone No.
I was thinking something along the lines of SELECT Name FROM TABLE1,TABLE2, TABLE3
But this does not work.
Is there a nice way of doing this with SQL or should I do code outside the SQL DB
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Jun 4, 2014
I have 3 tables:
News:
bigint NewId
nvarchar NewTitle
datetime NewDate
nvarchar NewBrief
--------------------------
Category:
int CatId
nvarchar CatName
--------------------------
NewsRelCategory:
bigint Id
int CategoryIdFk
bigint NewsIdFk
--------------------------
I want to select NewId, NewDate and Distinct NewTitle
I tried this but NewTitle doesn't distinct:
SELECT
FROM dbo.Category INNER JOIN
NewsRelCategory ON dbo.Category.CatId = NewsRelCategory.NrcCategoryIdFk INNER JOIN
dbo.News ON NewsRelCategory.NrcNewsIdFk = dbo.News.NewId
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Sep 6, 2006
Hi
I currently have two tables called Book and JournalPaper, both of which have a column called Publisher. Currently the data in the Publisher column is the Publisher name that is entered straight into either table and has been duplicated in many cases. To tidy this up I have created a new table called Publisher where each entry will have a unique ID.
I now want to remove the Publisher columns from Book and JournalPaper, replace it with an ID foreign key column and move the Publisher name data into the Publisher table. Is there a way I can do this without duplicating the data as some publishers appear several times on both tables?
Any help with this will be greatly appreciated as my limited SQL is not up to this particular challenge!!!
Thanks!
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Jul 1, 2015
i have this query in a proc
declare @bu_id INT,
@CurCaptureDate DATETIME,
@user_id INT,
@col_name VARCHAR(100),
@sort_order VARCHAR(4),
@CityPair_ID INT=NULL,
[code]....
where @reasons and @departure_code can be multiple.
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Mar 23, 2008
Im just curious how i would take multiple columns from multiple tables.... would it be something like this ???
table: Products COLUMNS ProductName, ProductID
table: Categorys COLUMNS CategoryName, CategoryID,ProductID
SELECT Products.ProductName, Categorys.CategoryName,Products.ProductID,Categorys.CategoryID,Categorys.ProductID
FROM Categorys, Tables
WHERE Products.ProductID = Categorys.ProductID
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Dec 28, 2005
I am developing a Content management system of sorts and I want it
to be pretty flexible. I have noticed that with web content (News,
Articles, Events, FAQs) that there is a lot of similarity between these
items. They all have the same basic fields:
TitleSynopsisBodyStartDateEndDate
(for News, Articles, FAQs start and end date can be used for content
expiration. For events, they are used for the actual event dates.)
But for some types of content, I will need fields specific to that
type. For instance, I want to have a few custom settings for a "Photo
Gallery" type, like, how many rows/columns of thumbnails to display per
page.
I feel like I have 3 options, but would really appreciate your advice. I created diagrams for the 3 options, located here: http://nontalk.com/dbdesign/
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Jul 25, 2014
Basically i have three Tables
Request ID Parent ID Account Name Addresss
1452 1254789 Wendy's Atlanta Georgia
1453 1254789 Wendy's Norcross Georgia
1456 1254789 Waffle House Atlanta Georgia
Bid_ID Bid_Type Bid_Volume Bid_V Bid_D Bid_E Request_ID Parent ID
45897 Incentive 10 N/A N/A N/A 1452 1254789
45898 Incentive 10 N/A N/A N/A 1453 1254789
45899 Incentive 10 N/A N/A N/A 1456 1254789
Bid_Number Bid_Name Request_ID Parent ID
Q789456 Wendy'Off 1452 1254789
Q789457 Wendy'Reba 1452 1254789
Q789456 Wendy'Off 1453 1254789
Q789457 Wendy'Reba 1453 1254789
Q789456 Wendy'Off 1456 1254789
I want the Result
Parent ID Bid_Type Bid_Volume Bid_V Bid_D Bid_E AutoGeneratedCol
1254789 Incentive 10 N/A N/A N/A 1
1254789 Incentive 10 N/A N/A N/A 2
Bid Number AutoGeneratedCol_Link
Q789456 1
Q789457 1
Q789456 2
Request ID AutoGeneratedCol_Link
1452 1
1453 1
1456 2
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Jun 28, 2004
Hello all, I'm having a real hard time trying to figure this one out. I'm trying to create a sql query that selects both the parent name and it's children, but it's got to loop through all the record sets to populate a drop down as an end result.
I think I thought this out correctly:
I have 2 tables
category
relationship
tbl category
cat_id //auto int
cat_name // varchar
relationship
r_id // auto int
parent_id // int
child_id // int
both the parent_id and child_id are associated with the cat_id
in my category table I could have
1cars // this is parent
2 audi
3 bmw
4 chevy
Table data example
r_id parent_id child_id
****************************
1 1 15
2 1 16
3 1 17
4 2 55
5 2 56
etc...
I want to select both the parent cat_name from category and also select the child cat_name where the parent_id = #
I can do it manaully like this
select cat_name, cat_id, parent_id , child_id from category, relationships where child_id = cat_id and parent_id = 1
what is the best way to loop through all the parent ids to find child category?
Could this be done in a stored procedure?
thanks in advance.
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Mar 23, 2006
Good Morning,I have a person table with personID. I have a personRate table withpersonID, rateID, and effectiveDate.I need to select fields from personRate, but I want the fields from theproper record.I need the one child record that has the most current date of the largestrateID.For example a person may have many rate records. I need the record that hasthe most current date of the largest rateID they have. Does that makesense?I am making a view that has data from both tables. I need to display themost current rate info.Any ideas? TIA ~ CK
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Jul 3, 1999
Good Morning to Everyone :-)
We're having DB Design discussions in our office for a new project. Basically, we're trying to decide on a DB Solution that allows us to manage multiple online communities. We expect to have several hundred thousand users (about 100k per community), and each user will have associations to user-specific content on the community level.
At some point, we expect to have to export one or several communites into their own Datasource. This will be a downstream event that will not affect us in the immediate future.
In terms of administering the DB and each community, we're having trouble deciding between generating this DB in one inclusive datasource vs creating multiple datasources (one for each community). With that in mind, any advice or suggestions that anyone may have on this subject would be appreciated.
FYI -- We're running CF v4 and MSSQL v7.
Our concerns are as follows:
Data Structure Issues (what abilities/SQL functions will we lose when implementing multiple DB's vs one DB? We definitely have a need to be relational at every level of this application.)
DB Performance (will a one DB solution run more efficiently on MS SQL v7 with high traffic than several DB's?)
Administration (It's our understanding that multiple DB's will cause us to lose our ability to perform table joins, etc. Are there any other shortcomings that we should be aware of?)
Stability Issues (We've heard that one DB vs Multiple DB's will have fewer threads. We've also heard that MS SQL v7 becomes increasingly unstable as more threads get created. Is this true, or is our understanding of this issue wrong?)
CF Integration Issues (How will CF v4 react to handling a large amount of high-traffic DSN's vs. having one DSN and the same amount of traffic?)
Thanks in advance for all your help. We look forward to hearing from you.
Regards,
Abraham Lloyd
Senior Developer
Compbiz.net
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Oct 29, 2006
Hi,I have a stored procedure that has to extract the child records forparticular parent records.The issue is that in some cases I do not want to extract all the childrecords only a certain number of them.Firstly I identify all the parent records that have the requird numberof child records and insert them into the result table.insert into t_AuditQualifiedNumberExtractDetails(BatchNumber,EntryRecordID,LN,AdditionalQualCritPassed)(select t1.BatchNumber,t1.EntryRecordID,t1.LN,t1.AdditionalQualCritPassedfrom(select BatchNumber,RecordType,EntryRecordID,LN,AdditionalQualCritPassedfrom t_AuditQualifiedNumberExtractDetails_Temp) as t1inner join(select BatchNumber,RecordType,EntryRecordID,Count(*) as AssignedNumbers,max(TotalNumbers) as TotalNumbersfrom t_AuditQualifiedNumberExtractDetails_Tempgroup by BatchNumber, RecordType, EntryRecordIDhaving count(*) = max(TotalNumbers)) as t2on t1.BatchNumber = t2.BatchNumberand t1.RecordType = t2.RecordTypeand t1.EntryRecordID = t2.EntryRecordID)then insert the remaining records into a temp table where the number ofrecords required does not equal the total number of child records, andthenloop through each record manipulating the ROWNUMBER to only selectthe number of child records needed.insert into @t_QualificationMismatchedAllocs([BatchNumber],[RecordType],[EntryRecordID],[AssignedNumbers],[TotalNumbers])(select BatchNumber,RecordType,EntryRecordID,Count(*) as AssignedNumbers,max(TotalNumbers) as TotalNumbersfrom t_AuditQualifiedNumberExtractDetails_Tempgroup by BatchNumber, RecordType, EntryRecordIDhaving count(*) <max(TotalNumbers))SELECT @QualificationMismatched_RowCnt = 1SELECT @MaxQualificationMismatched = (select count(*) from@t_QualificationMismatchedAllocs)while @QualificationMismatched_RowCnt <= @MaxQualificationMismatchedbegin--## Get Prize Draw to extract numbers forselect @RecordType = RecordType,@EntryRecordID = EntryRecordID,@AssignedNumbers = AssignedNumbers,@TotalNumbers = TotalNumbersfrom @t_QualificationMismatchedAllocswhere QualMismatchedAllocsRowNum = @QualificationMismatched_RowCntSET ROWCOUNT @TotalNumbersinsert into t_AuditQualifiedNumberExtractDetails(BatchNumber,EntryRecordID,LN,AdditionalQualCritPassed)(select BatchNumber,EntryRecordID,LN,AdditionalQualCritPassedfrom t_AuditQualifiedNumberExtractDetails_Tempwhere RecordType = @RecordTypeand EntryRecordID = @EntryRecordID)SET @QualificationMismatched_RowCnt =QualificationMismatched_RowCnt + 1SET ROWCOUNT 0endIs there a better methodology for doing this .....Is the use of a table variable here incorrect ?Should I be using a temporary table or indexed table if there are alarge number of parent records where the child records required doesnot match the total number of child records ?
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Aug 31, 2006
My dillema is this.
I have a table with the simplified sturcture like this:
Teacher
TeacherID
Name
Etc...
YearlyTeacherRecord
TeacherID
Year
Phone Number
blah
blah
I need a list of teachers with their most recent yearly teacher record. How would I do that
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Jul 20, 2005
Dear sirI have one SQL Server database.In this database more than 20 tables existsthat their structures is same.I have two way for design this tables:1.Create all tables separately(create more than 20 tables)2.Create one table and separate each groupby type(add column type to table and assign samevalue for each group)What is better solution?Please help me.*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
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Mar 11, 2008
Could anyone provide me an example of the effective way of design a database support multiple languages. Currently I working to design a database for travel website which support 3 different languages, and more languages will be added in in the future. One of my friend advice me to put different languages into the same table for example
Table Hotel
ID
Description_EN
Description_ES
Description_FR
Location_EN
Location_ES
Location_FR
....
But I don't thing it's a good idea to do so since in the future if I would like to add more languages I have to modify the table and I have to replace all of the sql statements. I am seeking for the best solution , could anyone help.
Thank you very much
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Sep 16, 2015
I have a single database and 5 user which use this database for DDL and DML operations.
The problem we are facing here is, every time a user need to do some work in this database he/she had to ask(manually) to rest of the 4 users whether they are doing some task over the same DB or not. Sometime due to communication gap one user open any transaction which creates a deadlock for another user to execute any query over the same tables in this DBI want to get rid of this problem by making it configurable from SQL Server part so that if any user which is already accessing this DB, so the other user don't get access to it, kind of Mutually exclusive behavior.
How to do this.
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Sep 27, 2007
Hi All,
I am designing database where few of the master tables will reside in different database or in case different server. Scenario is
Server "A" with Database "A" may host the "Accounts" table.
Server "B" with Database "B" may host the "Product" table.
I am designing database "Project" which will hosted in Server "A".
My application requires this master tables [readonly access] as data inserted in my application refers this tables. Also there are reports to be generated which refer this tables.
How do i design my database and sql queries?
I am thinking of approach of having equivalent tables created in my database and writing service which keep tables in my database in sync. This will ensure good perfomance during transaction and reports as they will need to refer this table locally as opposed to different database or different server.
Any thoughts on above approach?? or any better/standard way for such scenarios ?
Thanks in Advance. Your inputs will be of great help.
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Apr 12, 2007
Hello:
My client has a db with the following structure:
Online US Searchable Map of the 50 US States. Users search criteria is the following: Query records by selecting state, county, then record. Each County table has 10-20 tables. All databases combined = 500MB and TLogs = 100MB.
How would you re-design a relational DB where users could query data by state-county-record. Currenty the DB's are created by the County of each state which creates hundreds of DB's in SQLServer with no realtionship to each US state. What would be the best design to ensure good performance, data integrity and maintenance? Would you create 1 DB with all 50 states, create 4 DB's and divide by region(N,S,E,W), 50 DB's of each state or leave it as is with each county it's on DB? Any suggestions would be appreciated.
thx
rob
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Jun 29, 2006
It would appear that if a Child package is called more than once from a Parent using the 'Execute Package' task, then after the first execute the Parent Package Variables are not applied to child package. I.E we build dimensions in a master database and these are then loaded to a number of topic specific datamarts. We simply pass Parent variables to the child that hold source & target connection strings, the first time the package is called the correct database is accessed, subsequent Executes ignore the variables and use the original values. Manipulating the (our) event queue to run the package once results in the correct behaviour
Are packages cached when they are called from a Parent? if so is there a flag that I have missed to force a reload each time a child is executed?
This has just become a big problen for us so any guidance would greatly appreciated.
Paul
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Aug 17, 2015
I am in the process of creating a Report, and in this, i need ONLY the row groups (Parents and Child).I have a Parent group field called "Dept", and its corresponding field is MacID.I cannot create a child group or Column group (because that's not what i want).I am then inserting rows below MacID, and then i toggle the other rows to MacID and MacID to Dept.
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Jun 25, 2007
Hi,I have a question regarding best practices in database design. In arelational database, is it wise/necessary to sometimes create tablesthat are not related to other tables through a foreign Keyrelationship or does this always indicate some sort of underlyingdesign flaw. Something that requires a re evaluation of the problemdomain?The reason I ask is because in our application, the user can perform xnumber of high level operations (creating/updating projects, creating/answering surveys etc. etc.). Different users can perform differentoperations and each operation can manipulate one or more table. Thispart of the system is done and working. Now there is a requirement tohave some sort of audit logging inside the database (separate from thetext based log file that the application generates anyway). This"audit logging" table will contain high level events that occur insidethe application (which may or may not relate to a particularoperation). This table is in some sense related to every other tablein the database, as well as data that is not in the database itself(exceptions, external events etc.). For example : it might haveentries that specify that at time x user created project y, at time Auser filled out survey B, at time C LDAP server was down, At time D anunauthorized login attempt occurred etc.As I said, these seems to suggest a stand alone, floating table with afew fields that store entries regarding whats going on the systemwithout any direct relationship to other tables in the database. But Ijust feel uneasy about creating such an isolated table. Another optionis to store the "logging" information in another schema/database, butthat doubles the maintainance work load. Not really looking forward tomaintaining/designing two different schemas.I had a look at the microsoft adventureworks database schema diagramand they seem to have 3 standalong tables - AWBuildVersion, ErrorLogand DatabaseLog (unless i am reading it wrong!)Any advice, Information or resources are much appreciated.
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Jul 22, 2015
How to Change Order of Column In Database Tables
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Jun 5, 2014
We have a Silverlight based application which currently supports only one production version. Idea is to support three concurrent versions of the same application and user will switch to the newer versions based on their interest or they can still continue with the older version.
We still have to use the existing database for all these three versions.
What is the best way to architect this so that we can differentiate the code between the versions and still keep the data in sync and run all the versions in parallel.
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May 19, 2015
Given the sample data and query below, I would like to know if it is possible to have the outcome be a single row, with the ChildTypeId, c.StartDate, c.EndDate being contained in the parent row. So, the outcome I'm hoping for based on the data below for ParentId = 1 would be:
1 2015-01-01 2015-12-31 AA 2015-01-01 2015-03-31 BB 2016-01-01 2016-03-31 CC 2017-01-01 2017-03-31 DD 2017-01-01 2017-03-31
declare @parent table (Id int not null primary key, StartDate date, EndDate date)
declare @child table (Id int not null primary key, ParentId int not null, ChildTypeId char(2) not null, StartDate date, EndDate date)
insert @parent select 1, '1/1/2015', '12/31/2015'
insert @child select 1, 1, 'AA', '1/1/2015', '3/31/2015'
[Code] .....
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Apr 15, 2014
I am facing a problem in writing the stored procedure for multiple search criteria.
I am trying to write the query in the Procedure as follows
Select * from Car
where Price=@Price1 or Price=@price2 or Price=@price=3
and
where Manufacture=@Manufacture1 or Manufacture=@Manufacture2 or Manufacture=@Manufacture3
and
where Model=@Model1 or Model=@Model2 or Model=@Model3
and
where City=@City1 or City=@City2 or City=@City3
I am Not sure of the query but am trying to get the list of cars that are to be filtered based on the user input.
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Sep 24, 2007
Report needs to display as follows
Parent
col1,col2,col3...
val1,val2,val3
expandable section
child1
colA,colB,colC
valA,valB,valC
child2
colA...
....
repeat
Am currently implementing this as nested list controls with textboxes due to the fact that the headers for the parent and child differ. (By header I mean the column labels)
1. is there a better way of doing this as I much prefer working with tables/matrix controls?
2. how can I stop the header from scrolling - this is possible with tab/mtx controls. The alternative is to repeat the headers all down the page which wastes space and looks messy
3. How can I apply 'interactive sorting' to the parent columns?
Thanks
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Aug 13, 2006
Hey all,I am having some serious trouble getting the correct syntax for a select statement to work the way I need it, any help I could get on this would be greatly appreciated.I have a table called Units which stores computers and a table called Software which stores software. I have a bit field in Units called OEM, when this is set to true I don't want the select statement to pull this unit down when I am assigning software to other units.Here is my select statement: SELECT Software.SID, Software.SN, Software.Name, Users.First + ' ' + Users.Last AS 'Assigned User', Units.Make + '-' + Units.Model AS 'Assigned Unit' FROM dbo.Software LEFT JOIN dbo.Units ON Software.SN = Units.SN LEFT JOIN dbo.Users ON Units.UID = Users.UID WHERE (Units.OEM = 'FALSE') AND (Software.SN LIKE '%' + @SearchString + '%')Everything works as expected, unless of course the unit has no software assigned to it yet, it won't return it because its not tied to a Units.OEM field. Is there anyway to have it return ALL records that even arn't joined OR are joined but have OEM set to false?Thanks, let me know if I need to clear anything up.-Matthew
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May 3, 2006
Sql2005??? -NEW to SQL. Have a database which creates tables basically named the same thing except the date. i.e. dbo.table05012006, dbo.table05022006. I need to query a table if the date is = yesterday. I am searching for a way to do this everyday dynamically. Is this even possible?
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Mar 6, 2008
I am trying to create multiple tables in a database using a SQL Script. First i want to find all the tables that have an Identity Column as a primary key in the database. Then for all the tables that meet the Identity Column and primary key criteria, I want to create a New Table.
For example if the Orders table has a Identity Column as a primary key, I want to Create a New Table called ProdID_Orders. The ProdID_Orders will have 1 column called ProdID.
If the OrdersDetails table has a Identity Column as a primary key, I want to Create a New Table called ProdID_OrdersDetails. The ProdID_OrdersDetails will have 1 column called ProdID.
If the Employee table has a Identity Column as a primary key, I want to Create a New Table called ProdID_Employee. The ProdID_Employee will have 1 column called ProdID.
so the Create Table Statement for the ProdID_Orders will look like this:
CREATE TABLE [dbo].[ProdID_Orders](
[ProdID] [int] NULL
) ON [PRIMARY]
The Create Table Statement for the ProdID_OrdersDetails will look like this:
CREATE TABLE [dbo].[ProdID_OrdersDetails](
[ProdID] [int] NULL
) ON [PRIMARY]
This sequence will continue for all the tables in the database that have an Identity Column as a primary key. Thanks. I will appreciate some assistance with this.
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