T-SQL (SS2K8) :: Merging From One DB To Another If Have Identity Column On Both Database
May 19, 2014
How to merge the data from one database to another if we have identity column on both the database. If we are merging two companies,we need employee table of 2 database and insert them into first database and corresponding fkey tables say some 7 tables.how to merge if the table is having identity column.
DatabaseA has 7 Tables
Namely T1,T2,....T7
DatabaseB has 7 Tables
Namely T1,T2,....T7
T1 is master
T2 is Child
DatabaseA
T1
|
----------------
| |
T2 T3
| |
----------------- ---------------
|| | |
T4T5 T6 T7
DatabaseB
T1
|
----------------
| |
T2 T3
| |
----------------- ---------------
|| | |
T4T5 T6 T7
All the tables have interrelationship as shown pkey and Fkey
All the T1...T7 have Pkey with identity column starting from 1 and corresponding Fkey column in their child tables
Database A Table information Rows
T1-10000
T2-5000
T3-5000
T4-5000
T5-5000
T6-5000
T7-5000
Database B Table information Rows
T1-20000
T2-10000
T3-10000
T4-10000
T5-10000
T6-10000
T7-10000
Now i want to merge all the data from Database B to DatabaseA
How can i merge since in DatabaseA id for T1 starts from 1,2,3,4...and so on...
DatabaseB id for T1 also starts from 1,2,3,4...and so on...
and the fkey tables also have same 1,2,3,4...and so on... with reference of parent table
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Jan 25, 2015
I have table of three column first column is an ID column. However at creation of the table i have not set this column to auto increment. Then i have copied 50 rows in another table to this table then set the ID column values to zero.
Now I have changed the ID column to auto increment seed=1 increment=1 but the problem is i couldn't figure out how to update this ID column with zero value set to each row with this auto increment values so the ID column would have values from 1-50. Is there a away to do this?
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Sep 17, 2014
Using SQL 2008 R2 and stuck on this.
I have several sets of timedate ranges and I need to merge the ranges where there is no overlap with the jobs on resource1. In my example data, I want all jobs from ResourceID 1 and those jobs from all other resources where they do not overlap with EXISTING jobs on resource 1 (i.e. imagine I'm trying to select candidates from other resources to fill ResourceID 1 with continuous jobs)
Below is some sample data, my failed attempt and expected results. I managed to excluded everything that should be excluded except job 10
-- Need to select all other jobs from all other resources that can be merged into resource 1 where there is no overlap with existing jobs in resource 1 only
CREATE TABLE #Jobs
(
resourceID INT
,JobNo INT
,StartTime SMALLDATETIME
,EndTime SMALLDATETIME
,ShouldBeOmitted BIT
[Code] ....
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Jun 19, 2008
Hi,
I am having problem in bulk update of a sql server table haning identity column from a datatable( has no identity column) using sqlbulkcopy. I tried several approaches, but it does not show any error nor is the table getting updated. But the identity value seems to getting increased every time.
thanks.
varun
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Apr 21, 2014
We have a data warehouse staging database in which we capture change history for hundreds of tables from a source system. In the source system, records are updated in place, but in our data warehouse we capture these changes by "terminating" the existing record and adding a new record reflecting the changes. In the data warehouse we add two columns to every table -- effective_date and expiration_date -- which indicate the dates the record was in effect in the source system. By convention, an expiration_date of 6/6/2079 means the record is currently still active in the source system. Each day we simply compare yesterday's version of the record (in the data warehouse) against today's version (in the source system). If differences are found in any of the columns, we terminate the record and add a new one, setting those dates appropriately.
In this example, the employee_id column is the natural key in the source system. We add the effective_date and expiration_date in the data warehouse, so those three columns together make up the key in the data warehouse. The employee_name, employee_dept, and last_login_date columns all come from the source system as well.
drop table mytbl
create table mytbl (
effective_date smalldatetime,
expiration_date smalldatetime,
employee_id int,
employee_name varchar(30),
[code]....
In the select output, you can follow the trail of changes for each of these three employees. Bob moved from dept 7 to 8 at some point; Frank didn't change departments at all; Cheryl moved from dept 6 to 9 and later back to 6. However, the last_login_date was updated frequently for all these employees.
We've tracked hundreds of tables this way for years, some with hundreds of columns. For optimization purposes, I'm now interested in trimming the fat a bit. That is, we track changes in many columns that we don't really need in our data warehouse. Some of these columns are rapidly-changing, causing all sorts of unnecessary terminate/inserts in the data warehouse. My goal is to remove these columns, reclaim the disk space and increase the ETL speed. So in this example, let's get rid of the last_login_date column.
alter table mytbl
drop column last_login_date
select *
from mytbl
order by employee_id, effective_date
Now in the select output, you can see we have many "effective duplicate" records. For example, nothing changed for Bob between 1/1/2014 and 1/31/2014 -- those really should be one record, not three. Here's the challenge: I'm looking for an efficient way to merge these "effective duplicates" together, through set-based sql updates/deletes/inserts (hoping to avoid any RBAR operations). Here's what the table ultimately should look like (cheating to get there):
create table mytbl2 (
effective_date smalldatetime,
expiration_date smalldatetime,
employee_id int,
employee_name varchar(30),
employee_dept int
[code]...
Note that Bob only has two records (he changed department), Frank only has one record (no changes), and Cheryl has three records (two department changes).
My inclination would be to drop the unwanted columns, then GROUP BY all the remaining columns from the source system, and taking the MIN effective_date and MAX expiration_date. However, this doesn't work for cases like Cheryl's -- she moved to another department, then back again, so that change history needs to be retained.
As I mentioned, we have hundreds of tables, and I'd like to strip out dozens (maybe hundreds) of unused columns, so ultimately there will be millions of these pseudo-duplicates that need to be merged together. These are huge tables, so I really need to find an efficient set-based approach to this.
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Jul 10, 2014
I'm having issues building a cte sql statement for merging intervals. I have a table with data as follows:
declare @table table
(
startpoint int,
stoppoint int,
value int
[Code] ....
The resulting query returns the rows in the table, sorted by startpoint:
startpoint stoppoint value
----------- ----------- -----------
0 10 1
10 15 1
15 25 2
25 30 2
30 40 2
40 55 3
55 60 3
60 80 2
I'm looking for a merge cte that returns consecutive intervals with the same value, as follows:
startpoint stoppoint value
----------- ----------- -----------
0 15 1
15 40 2
40 60 3
60 80 2
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Jun 3, 2015
I am using Column Groups:
And I am getting:
Note how Today is being repeated three times. What I want is Today appearing once and centered (merged cell). Is this possible?
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Aug 3, 2015
How can I calculate a DateTime column by merging values from a Date column and only the time part of a DateTime column?
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Feb 1, 2008
I am working with a table in SQL server. I have a column that I want to designateas an identity column. I am not able to do this, because the field for "Identity Specification" is not editiable.
What I did was I went to sql server, right clicked and selected "Modify".The column properties dialog box/edit grid is then displayed with attributesthat I can modify.
There are two major nodes in this dialog box. One is named "General" and the otheris named "Table Designer". I expand the "Table Designer" node and then go to the node labeled "Identity Specification" It is here where I would like to edit thevalues.
The values that are listed for edit are listed below. BUT, the problem is thatI can place my cursor in those fields, but I am not able to change/edit them.Can anyone tell me what the problem is here? and how I can fix it?
+Identity Specification (Is Identity) Identity Increment Identity Seed
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Aug 12, 2009
when i alter non identity column to identity column using this Query alter table testid alter column test int identity(1,1) then i got this error message Msg 156, Level 15, State 1, Line 3 Incorrect syntax near the keyword 'identity'.
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Jun 15, 2007
I have 2 tables and I would like to somehow merge them and have an ID (primary key) automatically assigned while its being merged.
Ive tried exporting the tables into MS Access and doing it there but these tables have a HUGE amount of data in them and it basically kills whatever machine its ran on.
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Sep 19, 2005
Ok,I just need to know how to get the last record inserted by the highestIDENTITY number. Even if the computer was rebooted and it was twoweeks ago. (Does not have to do with the session).Any help is appreciated.Thanks,Trint
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Feb 3, 2008
I wonder about the possibility of merging two identical databases on two different servers upon recovering from connection failure between them, using triggers. In order to create a simple synchronization
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Apr 8, 2008
I have a website wih about 50000 pageviews permonth. I am using multiple access database for each section. for example for photogallery there is a separate database, for jokes there is another one. Now I am thinking to convert my all access databases into MSSQL Server2005 databases.There are about 5 access databases I want to merge them and convert them into 1 MDF file.How to do this?I am very new to SQL Server. Please Help I update access databases in MS ACCESS and upload them in server.When I will use SQL Server Databases How will I update them? From VS2008? Any other method? Or Should I think about creating WebBased control panel for my website like CP present in every CMS(joomla, dotnetnuke etc)? ....................................................................................................................... I have VS2008 and SQL Server 2005 Express.
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Sep 10, 2007
Hi,
We have we had a database in 2006 with around 90 tables and later we created a new database in 2007 with more tables for same application. Now we want to have a database which will contain all records from the two above database. how should we go about this??
Bharath JrDBA
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Feb 14, 2007
Hi Guys,
I need to merge database's from 2 different locations into a master database. I am concerned with the identities being duplicated, and the need to map/translate the ids in a sequential order. Also this needs to happen on a nightly basis , would i need to write a custom script ?? any starters , pointers would be appreciated
thanks
tribal
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Jan 23, 2007
Hi everyone. I am working on an application that will use SQL Server Express locally installed on the client machines. We want to be able to deploy MDF files and merge those files into the clients existing database. For example, their databases will have a Produce table which will contain prices and varieties of products we give to the clients to sell. The clients will also have some records of their own in this table for their own produce that they sell, and we will not know about those records at all. If we update our prices and add more produce, we want to simply merge in our records (update existing and insert non-existing) without touching theirs.
(scenario is fake BTW, so don't take too literally)
My question is does SQL Server Express have some builtin functionality to do this or will we need to do it ourself in code.
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Jul 14, 2014
We are in the conversion process of making the database ints.This is a change from a guid PK to an integer based PK that uses an int Identity. The program still uses the guid, and we are trying to map that guid to the databases int.We insert using TVPs passed from code. Since the identity is being set upon insert I have three things to accomplish:
1) Insert all the data into the dbo table
2) Update the parent Id in the table
3) Pass the SetsId guid, Sets_Id int, ParentSets_Id int back to the program
This is a high transaction table that will have a lot of records (millions).
--Sample table creation. There is a FK between Sets_Id to ParentSets_Id, Clustered PK on the Sets_Id
IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[JSets]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[JSets](
[SetsID] [uniqueidentifier] NOT NULL,
[Sets_Id] bigint Identity (1,1) NOT NULL,
[code]...
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Aug 1, 2014
I'm working with a third-party database (SQL Server 2005) and the problem here is the following:
- There are a bunch of ETL processes that needs to insert rows on a table (let's call this table T) and at the same time, an ERP (owner of T) is up and running (reading, updating and inserting on T).
- The PK of T is an Integer.
Today all ETL processes uses (select max(ID) + 1 from T) to insert new rows, so just picture the scenario. It is a mess! Everyday they get duplicate key error when 2 or more concurrent processes are trying to insert a row (with the max) at the same time.
Considering that I can't change the PK, what is the best approach to solve this problem?
To sum up:
* I need to have processes in parallel inserting on T
* I can't change anything on T
* The PK is NOT an Identity
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May 2, 2007
Hi,
I have to set up a project in SQLServer Express that will allow the export of tables from multiple PC's running SQLServer Express each month.
These have to be loaded into a single identical database on SQLServer Express each month for combined reporting.
so its basicaly
insert update on PC
export
import overlaying last months data (handle dup keys from the other pc's etc)
report
I've had a look at the SQLServer replication docs and got confused....
So if anyone can point me at appropriate documentation, or suggest a good method for this it would be appreciated
Thanks
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Mar 2, 2008
Does anyone have a script that can drop the Identity columns from all the tables in a database? Thanks
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Sep 3, 2007
I've seen posts about merging 2 databases but everyone is talking about 2 SQL based databases. I have a data cube based on MDX query giving me all the Sales data. I have a Excel sheet with the Budgets in it, thanks to the connector i can browse through my Excel file using SQL statements.
Now the problem that i have is i want to merge these 2 data's into one report i want to provide Sales figures from the cube with the budgets next to them which are stored in the Excel file.
So basicly is it possible to merge an MDX based database with an SQL database ? Cuz all the solutions i have found to far is by joining databases which is always done on SQL level.
Is this possible or just impossible ?
Thanks in advance
Joa
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Oct 16, 2006
Hi all,
The requirement is to have a table say 'child_table', with an Identity column to refer another column from a table say 'Parent_table'..
i cannot implement this constraint, it throws the error when i execute the below Alter query,
ALTER TABLE child_table ADD CONSTRAINT fk_1_ct FOREIGN KEY (child_id)
REFERENCES parent_table (parent_id) ON DELETE CASCADE
the error thrown is :
Failed to execute alter table query: 'ALTER TABLE child_table ADD CONSTRAINT
fk_1_ct FOREIGN KEY (child_id) REFERENCES parent_table (parent_id) ON DELETE
CASCADE '. Message: java.sql.SQLException: Cascading foreign key 'fk_1_ct' cannot be
created where the referencing column 'child_table.child_id' is an identity column.
any workarounds for this ?
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Sep 30, 2014
We have a database where many tables have a field that has to be lengthened. In some cases this is a primary key or part of a primary key. The table in question is:-
/****** Object: Table [dbo].[DTb_HWSQueueMonthEnd] Script Date: 09/25/2014 14:05:09 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[DTb_HWSQueueMonthEnd](
[Code] ....
The script I am using is
DECLARE@Column varchar(100)--The name of the column to change
DECLARE@size varchar(5)--The new size of the column
DECLARE @TSQL varchar(255)--Contains the code to be executed
DECLARE @Object varchar(50)--Holds the name of the table
DECLARE @dropc varchar(255)-- Drop constraint script
[Code] ....
When I the the script I get the error message Could not create constraint. See previous errors.
Looking at the strings I build
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] DROP CONSTRAINT PK_DTb_HWSQueueMonthEnd
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] Alter Column [Patient System Number] varchar(10)
ALTER TABLE [dbo].[DTb_HWSQueueMonthEnd] ADD CONSTRAINT PK_DTb_HWSQueueMonthEnd PRIMARY KEY NONCLUSTERED ([Patient System Number] ASC,[Episode Number] ASC,[CensusDate] ASC)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
They all seem fine except the last one which returns the error
Msg 8111, Level 16, State 1, Line 1
Cannot define PRIMARY KEY constraint on nullable column in table 'DTb_HWSQueueMonthEnd'.
Msg 1750, Level 16, State 0, Line 1
Could not create constraint. See previous errors.
None of the fields I try to create the key on are nullable.
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Sep 7, 2007
Hi guys,
If I have a temporary table called #CTE
With the columns
[Account]
[Name]
[RowID Table Level]
[RowID Data Level]
and I need to change the column type for the columns:
[RowID Table Level]
[RowID Data Level]
to integer, and set the column [RowID Table Level] as Identity (index) starting from 1, incrementing 1 each time.
What will be the right syntax using SQL SERVER 2000?
I am trying to solve the question in the link below:
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2093921&SiteID=1
Thanks in advance,
Aldo.
I have tried the code below, but getting syntax error...
ALTER TABLE #CTE
ALTER COLUMN
[RowID Table Level] INT IDENTITY(1,1),
[RowID Data Level] INT;
I have also tried:
ALTER TABLE #CTE
MODIFY
[RowID Table Level] INT IDENTITY(1,1),
[RowID Data Level] INT;
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Jul 24, 2007
Hi,
I am using web service to synchronize data between SQL Server 2005 on a desktop and a SQL Server Mobile Edition on a mobile device.
Initially, when i added the data source to my mobile application, my .sdf only has 3 records. I am then supposed to retrieve 97 more records from the desktop server when my mobile application runs. After performing merging, I clicked (on my device emulator) on the .sdf deployed under my mobile application and the query analyzer showed all 100 records.
Does this mean my mobile database has been successfully updated with all 100 records? If not, how do I check that? The reason why I am asking this is that the file size of this .sdf with 100 records is still the same as the initial .sdf with only 3 records. How is this possible?
Am I missing anything or getting some concepts wrong? Please enlighten. Thanks.
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Jan 7, 2008
Hi,
I have two databases lets say DB1 and DB2.
Schemas for both databases is same.
In both database schemas there are tables which has identity columns as primary key.
Now i want to merge these two databases in a single database say DB3.
It may also possible that some master records in both databases are common so they should not repeat in DB3
Is there any way so that i can do it quickly and as soon as possible.
Thanks in advance
Rohit
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Jan 9, 2007
Hello;
My Memebership table has Guid column as Primary key.
But I would like to add Auto numbering Identity column to this table.
Is this idea OK or it will bring some problems?
Thank you in advance for your help
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Aug 3, 2006
i have a table
table1
column1 int not null
column2 char not nul
column3 char
i want to script a change for table1 to alter column1 to be the table identity column. not primary.
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Mar 5, 2004
Hi,
I have a column that is unique that I would like to make into an IDENTITIY column after I insert some data into it.
I tried
alter table <table_name>
alter column <col_name> int Identity (1,1)
but it fails.
Ajay
WORD4LIFE
(http://www.word4life.com)
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Jul 20, 2005
Hi(SQL Server 2000)I have an existing table (t) with a column that is NOT an identity column(t.ID), but it has manually inserted "row numbers". I want to make thiscolumn become an identity column. This column is a key field to othertables, so I want to keep the row numbers that are allready inserted.From the Query Analyzer, how do I do this?Thanks in advance!Regards,Gunnar VøyenliEDB-konsulent asNORWAY
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Apr 2, 2007
Hi,
I have two tables table1 and new_table
Table1 has id_value column which is int and it is idenity specification is yes and identity increment is 1 .
And I have a NEW_TABLE with column name new_id which should store current id_value of Table1.
This type of functionality is requirement for my project.
I should get a current value of id_value from table1 . if I say SELECT * FROM NEW_TABLE ;
Please help me out to fix this issue
Thanks
Purnima
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Jun 24, 2014
I have a script that loops through a series of tables to send data to a table from each of the tables. My issue is that not all tables have the columns I need in them. What I would like is to replace the column with another column when it does not exist. Something like below
Select Misisng_Column(A.Name, replace with B.Name) as Name
FROM SomeTable A
Cross Join (Select Name FROM AnotherTable) B
AnotherTable has one record in it. To avoid a Cartesian issue. Like I said just an example
In my real script the table aliased as A is from a list of tables in a sys.tables query that loops through to the end.
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