I have a query like below and it generate a temporary table automatically based on parameter. So, the number of column of this table can be vary. Now , i need to add an auto incremental id column into this table.How i do it?
SELECT #SourceFields INTO ##StoreSourceInfo FROM testdb.dbo.#SourceTable
Note: 1) Number of source field & name of table pass using the parameter #SourceFields & #SourceTable.
2) So, the number of column can be vary on ##StoreSourceInfo table.
Current Result:
select * from ##StoreSourceInfo shows only the available column.
Expected Result:
select * from ##StoreSourceInfo query will show an additional auto incremental id column & all rest of the column available in the temp table.
Hope you get me. Thanks in advance.
SELECT
IDENTITY(INT, 1, 1) AS id
INTO #Temptable
FROM User
You can use row_number function
Select ROW_NUMBER() over (order by T.field1) rownum
, T.field1, T.field2 into #temp1
from #Table T
Use the identity function. See the link for an example. http://msdn.microsoft.com/en-us/library/ms189838.aspx
You have to try with following query to get your excepted result to add a extra auto increment column :
SELECT
IDENTITY(INT, 1,1) AS Rank,
#SourceFields
INTO
##StoreSourceInfo
FROM
testdb.dbo.#SourceTable
Means apply IDENTITY function...
Related
How do I we get last row in SQL Server if we don't have primary id and numeric column? For example we only have a name and a few other columns in the table
If you mean the highest name, alphabetically,
select max(columnName) from tableName
If you mean the last row added to the table, it's not possible unless you have a column with the date/time inserted, or some other value like an identity column.
Maybe if you have a column for insertedDate you could do something like this:
select top (1) * from tableName order by insertedDate DESC
If not, for future use if you don't want an ID column, maybe you can add a default constraint for inserted date to pick from the system date, so you wouldn't have to add anything when you insert.
With no definition of 'last row'... :
select top 1 *
from t
order by Name desc
here is my situation,
I have 2 tables,
1st table has all records, and it has IDs
2nd table has new records and it doesnt have ID, yet.
I want to generate ID for 2nd table with max(id) + 1 from 1st table.
when i do this, it makes all rows same id number, but i want to make it unique increment number.
e.g
select max(id) from table1 then it gives '997040'
I want to make second table rows like;
id
997041
997042
997043
997044
i think i need to use cursor or whileloop, or both, but i could not create the actual query.
sorry about bad explanation, i am so confused now
Use ROWNUM to generate incrementing row numbers. E.g.:
SELECT someConstant + ROWNUM FROM source.
CREATE TABLE table_name
(
ID int IDENTITY(997041,1) PRIMARY KEY
)
I hope this sql query would work!!
Or refer http://www.w3schools.com/sql/sql_autoincrement.asp
I have the following query
SELECT q.pol_id
FROM quot q
,fgn_clm_hist fch
WHERE q.quot_id = fch.quot_id
UNION
SELECT q.pol_id
FROM tdb2wccu.quot q
WHERE q.nr_prr_ls_yr_cov IS NOT NULL
For every row in that result set, I want to create a new row in another table (call it table1) and update pol_id in the quot table (from the above result set) with the generated primary key from the inserted row in table1.
table1 has two columns. id and timestamp.
I'm using db2 10.1.
I've tried numerous things and have been unsuccessful for quite a while. Thanks!
Simple solution: create a new table for the result set of your query, which has an identity column in it. Then, after running your query, update the pol_id field with the newly generated ID in your result table.
Alteratively, you can do it more manually by using the the ROW_NUMBER() OLAP function, which I often found convenient for creating IDs. For this it is convenient to use a stored procedure which does the following:
get the maximum old id from Table1 and write it into a variable old_max_id.
after generating the result set, write the row-numbers into the table1, maybe by something like
INSERT INTO TABLE1
SELECT ROW_NUMBER() OVER (PARTITION BY <primary-key> ORDER BY <whatever-you-want>)
+ OLD_MAX_ID
, CURRENT TIMESTAMP
FROM (<here comes your SQL query>)
Either write the result set into a table or return a cursor to it. Here you should either use the same ROW_NUMBER statement as above or directly use the ID from Table1.
I need to update a SQL Server table periodically by inserting new records into it.
The table has an ID column in the form of Company0001 through Company0020 right now.
Let's say I added one record of a new company into the table. I want to fill the ID column with Company0021 for this new record. Can anyone suggest a way to do this?
Thank you so much!
I would strongly suggest to use an identity column. Identity is a mechanism designed and used for this actual purpose and therefore it would be much better in terms of performance.
Nevertheless, if you insist on IDs on the format 'CompanyXXX' I would suggest to use a varchar column. Then you would add a trigger on the insert and update operations. When the trigger runs, it would find out the last 'CompanyXXX' and form the new one. If you need help regarding triggers, you could check this tutorial.
Hope I helped!
My suggestion would be to have an autoincrement field, and then concatenate the company name with the ID.
If you don't want to do it with an ID field, do you want it to happen automatically, or are you going to manage it manually? If automatically, you'll need to write a trigger to intercept the INSERT and change the value there. Shouldn't be too hard to do.
I'd seriously recommend NOT doing this and going down the autoincrement field path. It's better.
Add another column to the table to hold an integer value (in this example SNo) and then write query as
declare #SNo int
select #SNo=max(SNo)+1 from Table_Name
insert into Table_Namevalues (#SNo,'company'+right('0000'+cast(#SNo as varchar(10)),4))
And then see the result
Hope this helps
In case a solution is required as, having only one column with values in desired format you can create a function as:
create table table1(id varchar(100));
Go
create function dbo.fn_GetCompanyIdentity ()
returns varchar(100)
as
begin
declare #CompanyIdentify varchar(100);
select #CompanyIdentify =
(select 'Company' +
right ('00000' + cast (
(
(
case when Not exists (select ROW_NUMBER() over( order by (select 1)) from Table1 ) then 1
else (select top 1 ROW_NUMBER() over( order by (select 1)) as currentRownumber from Table1 order by currentRownumber desc) + 1
end
)
)
as varchar(4))
,4));
return #CompanyIdentify;
end;
go
and then use the function in insert statement as :
insert into Table1 (id)
select dbo.fn_GetCompanyIdentity();
Go
Hope this helps!!
Why dont you just create an auto-increment column and then concatenate "Company" to this column in another column. And for presentation just select "Company+autoincrement" column.
I am trying to increment a field without sequence . Is there any possiblities??
can i do something like this
INSERT INTO Test
VALUES ((
SELECT COUNT(ID)
FROM Test)+1)
Please suggest me a way to do this
If your sequence field is called seq_fld for example you could use
insert into Test values ( (select max(seq_fld) from Test) + 1)
It is advisable to have unique constraint on seq_fld
you can take the current maximum value in a variable with #var_name = SELECT MAX(column_name) FROM TABLE
then you can make use of ROW_NUMBER() OVER (ORDER BY column_name)+#var_name