Adding A Row And Selectively Generating The Keys.
Dec 4, 2007
This might be tricky, but I wanted to know if I can add a row to the table and decide wht keys I want to generate for that row.
For example: I have a table which have 4 different keys. I want to generate only 2 of them for certain rows and all for the remaining rows. Is this possible? This does sound like an advanced feature for sql databases, but its easy to do with custom dbs like berkeley db
Trust me, its a very helpful feature.
Thanx in advance,
Premal
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May 23, 2007
I have a large table that I need to copy, but I need to generate a new value for my id field using a SPROC and replace my existing ID value. I also have a few mapping tables I need to copy, so I need to store this new ID for later use. I currently have a SPROC that performs all these actions, but it takes about 3 or 4 minutes to complete and completely hogs the CPU time. Thus, I can't perform any actions until it finishes.
I'm looking for a way to run this procedure in the background. Unfortunately, my ID field value is not a GUID nor an IDENTITY column. I've researched Integration Services, but I was unable to find any DataFlow Tranformations to call a SPROC to retreive a new id nor could I find anything that would let me store my new id to update my mapping tables. SQLBulkCopy wasn't a good solution either.
If anyone has any insight to this, it would be greatly appreciated. Thanks,
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Apr 19, 2008
hello
I'm using SQL SERVER 2000 (I even tried this using SQL SERVER 2005 Express)
I've a table tblA and table tblB.
tblB primary key is referred in tblA as foreign Key.
When I tried to create script....
Drop script is deleting the relation of tblA_tblB foreign Key...
But while creating the script of tblB...Its not creating the relation script.
How could I get the script with all the relations in a particular table.
plz help me out.
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Aug 22, 2006
Would anyone please instruct how to prevent the duplicate record bysetting the unique keys on the ms sql server? i've been checking theduplicate record as front-end and i found out if there is an internetdelay or some other reasons, it has a chance to store the duplicateddata into the database. so i realized it has to be done on the back-endside.for example, if i have three columns (office code, office id, officesection) as a unique key, how can i setup this? thanks in advance.
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Aug 3, 2006
I have a scenario whereby I will have 200+ clients putting messages onto a service broker queue. This message will go through a pipes and filters based messaging system, and ultimately the message will pop out the other end.
Here's the question: what is a good way of making sure the same client gets the response to the message he received. Is there anyway I can selectively receive messages from a queue, i.e., pass a correlation id in with the message, and then filter messages based on that id.
Or if someone knows a better way to do it altogether i'd really appreciate it.
Many thanks,
Paul
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Jul 30, 2014
So here is the question, on the last line, MAX(LAST T.LastDate) has a date, or it's NULL.
How can I change the statement to say, IF MAX(LAST T.LastDate) IS NULL use NULL?
SELECT DISTINCT
TOP (100) PERCENT O.CompID, O.Comp_Name, COUNT(DISTINCT O.Comm_Unit) AS Apartments, FL.First_MI, FL.Last_MO, O.Bldg, DATEDIFF(day, FL.First_MI,
FL.Last_MO) AS days, O2.MoveoutDescription
FROM dbo.OccupancyHistory AS O RIGHT OUTER JOIN
(SELECT O.CompID, MIN(FIRST_T.FirstDate) AS First_MI, MAX(LAST_T.LastDate) AS Last_MO, MAX(LAST_T.LAST_ID) AS LAST_ID
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Mar 20, 2007
Based on some report parameters value?
My dataset to display is coming from a stored procedure. Now based on a report parameter which user selects, I want to filter the results being displayed but only if user selects certain value in the parameter drop down. I tried using iif statement and I can use it to filter dataset based on parameter but can't get how NOT to apply the filter for a particular value of the user selected parameter.
Hope I am clear.
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May 3, 2008
I have a bit of an issue with an app I'm working on. The app integrates two different SQL Server applications - both of which employ recursive triggers to some extent. My integration basically serves to establish a link between different tables in the applications, and maintains consistency between the two applications (where common fields exist) by employing INSERT, UPDATE, and DELETE triggers.
In order to prevent infinitely recursive triggers (AppA.TableA's update trigger updates AppB.TableA. AppB.TableA's update trigger updates AppA.TableA...and so on, and so on) I need to be able to somehow selectively prevent these triggers only from executing recursively. For example, if the trigger in AppA is what calls the trigger in AppB, I do not want AppB's trigger to fire (and vice versa).
Further Information:
The apps may be on the same, or different, SQL servers.
I'm fully aware of the database-wide options to disable trigger recursion (ALTER DATABASE), but I can't disable recursion for the balance of the triggers in the databases.
The integration will run on either SQL 2000 or SQL 2005 - and perhaps one server on 2000, and one on 2005 (depending upon the deployment).
I'm perfectly amenable to handling it in the trigger code, if possible, but I'm at a bit of a loss as to how to properly and efficiently manage that.
I know that SQL Server will kill infinitely recursive triggers once it detects them, but that doesn't exactly solve my original problem.
Thanks very much for any input you can offer.
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Apr 24, 2014
I have about 1200 sql files in one of my folders. Almost all of these files do data inserts and updates, so they should be run only once. As and when required I have manually ran around 150 of them already. Whenever I ran any of these scripts, I log that file name into a log table in my sql server including the execution time. Since running 1000+ more files takes a lot of time, I want to automate running of these files through a batch file. But I also want to filter the files that are already run.My file list looks like follows.
InsertToOrderTypes.sql
UpdateClientAddress.sql
DeleteDuplicateOrders.sql
InsertToEmailAddress.sql
ConsolidateBrokerData.sql
UpdateInventory.sql
EliminateInvalidOfficeLocations.sql
My log table in the database looks like this.
select * from sqlfileexecutionlog
FileNameRunTimeResult
---------------------
DeleteDuplicateOrders.sql03/12/2014 14:23:45:091Success
UpdateInventory.sql04/06/2014 08:44:17:176Success
Now I want to create a batch file to run the remaining files from my directory to my sql server. I also want to wrap each of these sql file executions in a transaction and log success/failure along with the runtime and filename into sqlfileexecutionlog table. As I add new sql files into this directory, I should be able to run the same batch file and execute only the sql files that have not bee run.
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Apr 11, 2006
Hello again,
I'm going through my tables and rewriting them so that I can create relationship-based constraints and create foreign keys among my tables. I didn't have a problem with a few of the tables but I seem to have come across a slightly confusing hiccup.
Here's the query for my Classes table:
Code:
CREATE TABLE Classes
(
class_id
INT
IDENTITY
PRIMARY KEY
NOT NULL,
teacher_id
INT
NOT NULL,
class_title
VARCHAR(50)
NOT NULL,
class_grade
SMALLINT
NOT NULL
DEFAULT 6,
class_tardies
SMALLINT
NOT NULL
DEFAULT 0,
class_absences
SMALLINT
NOT NULL
DEFAULT 0,
CONSTRAINT Teacher_instructs_ClassFKIndex1 FOREIGN KEY (teacher_id)
REFERENCES Users (user_id)
)
This statement runs without problems and I Create the relationship with my Users table just fine, having renamed it to teacher_id. I have a 1:n relationship between users and tables AND an n:m relationship because a user can be a student or a teacher, the difference is one field, user_type, which denotes what type of user a person is. In any case, the relationship that's 1:n from users to classes is that of the teacher instructing the class. The problem exists when I run my query for the intermediary table between the class and the gradebook:
Code:
CREATE TABLE Classes_have_Grades
(
class_id
INT
PRIMARY KEY
NOT NULL,
teacher_id
INT
NOT NULL,
grade_id
INT
NOT NULL,
CONSTRAINT Grades_for_ClassesFKIndex1 FOREIGN KEY (grade_id)
REFERENCES Grades (grade_id),
CONSTRAINT Classes_have_gradesFKIndex2 FOREIGN KEY (class_id, teacher_id)
REFERENCES Classes (class_id, teacher_id)
)
Query Analyzer spits out: Quote: Originally Posted by Query Analyzer There are no primary or candidate keys in the referenced table 'Classes' that match the referencing column list in the foreign key 'Classes_have_gradesFKIndex2'. Now, I know in SQL Server 2000 you can only have one primary key. Does that mean I can have a multi-columned Primary key (which is in fact what I would like) or does that mean that just one field can be a primary key and that a table can have only the one primary key?
In addition, what is a "candidate" key? Will making the other fields "Candidate" keys solve my problem?
Thank you for your assistance.
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Jul 16, 2014
what the best practice is for creating indexes on columns that are foreign keys to the primary keys of other tables. For example:
[Schools] [Students]
---------------- -----------------
| SchoolId PK|<-. | StudentId PK|
| SchoolName | '--| SchoolId |
---------------- | StudentName |
-----------------
The foreign key above is as:
ALTER TABLE [Students] WITH CHECK ADD CONSTRAINT [FK_Students_Schools]
FOREIGN KEY([SchoolId]) REFERENCES [Schools] ([SchoolId])
What kind of index would ensure best performance for INSERTs/UPDATEs, so that SQL Server can most efficiently check the FK constraints? Would it be simply:
CREATE INDEX IX_Students_SchlId ON Students (SchoolId)
Or
CREATE INDEX IX_Students_SchlId ON Students (SchoolId, StudentId)
In other words, what's best practice for adding an index which best supports a Foreign Key constraint?
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May 16, 2008
Pls let me know How I generate script for All primary keys and foreign keys in a table. Thereafter that can be used to add primary keys and foreign keys in another databse with same structure.
Also how I script default and other constraints of a table?
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Jul 15, 2002
Can somebody explain to me how to best do inserts where you have primary keys and foreign keys.l'm battling.
Is there an article on primary keys/Pk ?
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Nov 22, 2007
Hello!I have a table A with fields id,startdate and other fields. id and startdateare in the primary key.In the table B I want to introduce a Foreign key to field id of table A.Is this possible? If yes, which kind of key I have to build in table A?Thx in advance,Fritz
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Aug 13, 2007
Hi,
I have recently been looking at a database and wondered if anyone can tell me what the advantages are supporting a unique collumn, which can essentially be seen as the primary key, with an identity seed integer primary key.
For example:
id [unique integer auto incremented primary key - not null],
ClientCode [unique index varchar - not null],
name [varchar null],
surname [varchar null]
isn't it just better to use ClientCode as the primary key straight of because when one references the above table, it can be done easier with the ClientCode since you dont have to do a lookup on the ClientCode everytime.
Regards
Mike
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Sep 3, 2015
Is there any way or option to get the all columns of dataset added to table when we add a table in data region. It will take lot of time to add one by one and also there are chances to add one column ore than once.
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Aug 6, 2013
What is the syntax for adding a column where you are adding a year to a date in a date format? For example adding a column displaying a year after the participation date in date format?
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Jan 19, 2004
hi,
I am developing a ASP.NET application using SQL Server as my database.
I want to create a number that is unique.
The number will have 8 digits.
first 2 digits correspond to year. ex:04 or 03
the next 6 digits start with 000001 and it should get added for each new entry of data.
i am not able to generate number in the way i said. I am relatively new to SQL. so any suggestions as how to go about solving the problem???. Are there any samples/codes available for this.
Any help would be highly appreciated.
thanks,
-sriram
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May 31, 2001
Hi all,
I have generated an SQL script such that when it is run, it will automatically create tables if not existing or drop the existing tables. The problem I have is that, is there any way I can also make the script create not only the tables but also transfer the data from the old database to the new database?
I would really appreciate if any of you could point me to any existing programs, scripts etc that can do that. Thanks in advance
Regards,
Celia
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Oct 8, 1999
Is there a way to generate SQL Scripts from a stored procedure?
For disaster recovery and documenation reasons, we'd like to create scripts of our databases periodically. I, being somewhat lazy, would like to automate this so I really don't have to remember to run this every so often.
Any help would be appreciated.
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Jun 7, 1999
Is there a way to generate SQL scripts from other than SQL Enterprise Manager?
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Oct 29, 2014
I must produce an XML file with this layout:
Code:
<root>
<dataroot>
<Professions>
<Profession>web designer</Profession>
<tags>
<tag>Ruby on Rails</tag>
<tag>Apache</tag>
<tag>HTML/CSS</tag>
[code]...
I can't get my head around it ..I've even tried to solve it by using FOR XML RAW.
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May 13, 2008
Hi
I am unable to see how to generate a leading zero.
Table A
declare @TableA table ( ID numeric ,
Fruits varchar(10)
)
insert @TableA
select 1,'Oranges'
union all select 2,'Mangoes'
union all select 3,'Apricots'
ID Table A
1 Apples
2 Oranges
3 Grapes
4 Apricots
declare @TableB table ( seed numeric ,
)
insert @TableB
select 080513000448
union all select 080513000449
union all select 080513000450
Table B
seed
080513000448
080513000449
080513000450
I wrote the following query but i need generate a leading zero not sure which function can help maybe the right function but i am not sure how to use it in this case
SELECTconvert(varchar(10), getdate(), 12) +
(SELECT
CASE
WHEN SUBSTRING(ISNULL(max(seed),'00000'),1,6) = convert(varchar(10), getdate(), 12)
THEN SUBSTRING(ISNULL(max(seed),'00000'),7,12)
ELSE '000000'
END AS SEED
FROM B)
+ (row_number()
over (order by Id))
as SEED
FROM A
SEED
----
80513000451
The output which i need is
SEED
----
080513000451
rather then
SEED
----
80513000451
regards
Hrishy
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May 12, 2007
A simple question! I would like to create a database that creates say serial numbers and saves them to a table. If poss I would like to create them on demend and not duplicate.....
I have blank page syndrome!!!!
Thanks in advance
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Feb 19, 2008
Can anyone suggest a case-study/reference links/video demos for creating a cube using Analysis Services and generation of reports using Reporting Services.
Thank You
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Mar 15, 2008
Guys,
I have to generate sequence for distinct group of values for example
intially seq is set to 1 through out the table
categorydescidseq
__________________________________
AccountingAccounting61
AccountingAccounting72
AccountingFinal81
AccountingFinal92
AddendumAddendum 101
Is there any way to accomplish this?
Any suggestions and inputs would help
Thanks
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Mar 31, 2008
hi
how can we generate the data in csv files of database tables by using sql query?
regards
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Aug 24, 2006
Help again please,I need to insert rows into a table from another table. The tables areidentical column wise except the table im inserting from does not havea primary key value. On insert I need to generate a primary key thatis consecutive based on the table im inserting into. Also the table iminserting into does not have a identity column. Much appreciated.
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May 12, 2006
Hi,
we would like to generate SSIS packages(connections, data flow tasks, etc..) programatically using C#. Is it possible to do so?
At present we are creating packages by dragging and dropping required componets from toolbox and configuring them manually. We have a requirement of creating around 300 packages every week. Manual creation of packages is really a nightmare.
I heard from one of friends that using c# we can create packages. is it true? if so, can we view/edit the packages generated using c# using VS 2005 IDE(if required) ?
Regards,
Gopi
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Mar 29, 2007
Hello,
SRS 2005 provides functionality for loading and rendering reports on fly using LoadReportDefinition and Render methods defined in ReportExecutionService webservice.
I was wondering if the same/similar behaviour can be accomplished in Reporting Services 2000.
Thanks in advance,
Kobi
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Jul 12, 2007
What does N indicate in the following script
SELECT * FROM dbo.sysobjects WHERE id = OBJECT_ID(N'[dbo].xxxx' )
Plz can anyone explain
EXEC dbo.sp_executesql @statement = N'Create View xxxxx'
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Oct 17, 2006
I've been given an excel file that lists:
userID's,
Names
Password
expiary dates.
I need to convert this list into sql server logins. Can this be done via a tsql statement? if so how, and if it cant be done via a statement then what other way can it be done.
Many thanks in advance.
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Sep 18, 2007
I'm having problems generating the primary key for a sql server table. I use a slowly changing dimension to discriminate modified and new records. The primary key in the SQL Server table is a combo number/letter incremental (ex. 0000A, 0001A...9999A, 0000B...). I tried creating Instead of insert and For insert trigger for a table but this doesn't seem to do the work.
What are my other options? How can I generate a primary key for every new row?
Any advice is appreciated.
Regards
Sara
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