In SQL Sever, do the size of computed columns gets added to the totalsize of the tables? Does SQL server stores the actual values incomputed columns?Thanks_GJK
Hi, I have a data file which consists of data as below, 4 PPU_FFA7485E0D|| T_GLR_DET_11||
While iam inserting into table using bulk insert, this pipe(||) is also getting inserted into the table, here is my query iam using to insert the data using bulk insert.
BULK INSERT TABLE_NAME FROM FILE_PATH WITH (FIELDTERMINATOR = ''||'''+',KEEPNULLS,FIRSTROW=2,ROWTERMINATOR = '''')
Does anyone know if it is possible to add a column to a table at a particular position. The ALTER TABLE statement specifies that an ADD COLUMN puts this on the end of the table. Is there a way to insert into the middle of the table? Alternatively, can it be done through SQL-DMO?
Obviously the fallback would be to drop and re-create the table with the correct column ordering, however this is not ideal for tables with large amounts of data.
It's possible to do this through Enterprise Manager (using Insert Column), so how does it do it - DMO, or by dropping and re-creating?
We're building a database schema upgrage tool and are trying to cover all possibilities.
I have a bulk insert situation that would be nice to be able to pull off. I have a flat file with 46 columns that are to go into a table. The table, I want to have a 47th column to be updated later on by means of a stored proc saying if the import into the system was sucessful or not. I have the rowterminator set as '"' thinking that would tell SQL to begin on the next row, leaving the importstatus column null but i still receive an error.
First of all, is this idea possible within this insert statement. Secondly, if so, what would be the syntax to tell the insert statement to skip that particular column. It is the last column listed in the table so it just needs to start on the next row after it inserts the last bit of data in the flatfile.
If this is not possible, is it possible to bulk insert into a temp table?
I have a table with a string value, where all values are seperated by a space/blank. I now want to use SQL to split all the values and insert them into a different table, which then later will result in deleting the old table, as soon as I got all values out from it.
Old Table:
Code: ID, StringValue
New Table:
Code: ID, Value1, Value2 Do note: Value1 is INT, Value2 is of nvarchar, hence Value2 can contain spaces... I just need to split on the FIRST space, then convert index[0] to int, and store index[1] as it is.
I can split on all spaces and just Select them all and add them like so: SELECT t.val1 + ' ' + t.val2... If I cant find the first space that is... I mean, first 2-10 characters in the string can be integer, but does not have to be.Shall probably do it in code instead of SQL?Now I want to run a query that selects the StringValue from OldTable, splits the string by ' ' (a blank) and then inserts them into New Table.
Code: SELECT CASE CHARINDEX(' ', OldTable.stringvalue, 1) WHEN 0 THEN OldTable.stringvalue ELSE SUBSTRING(OldTable.stringvalue, 1, CHARINDEX(' ', OldTable.stringvalue, 1) - 1) END AS FirstWord FROM OldTable
Found an example using strange things like CHARINDEX..But issue still remains, because the first word is of integer, or it does not have to be...If it isn't, there is not "first value", and the whole string shall be passed into "value2".How to detect if the very first character is of integer type?
Code: @declare firstDigit int IF ISNUMERIC(SUBSTRING(@postal,2,1) AS int) = 1 set @firstDigit = CAST(SUBSTRING(@postal,2,1) AS int) ELSE set @firstDigit = -1
Is it possible to get a Computed column in one table to carry out a SELECT & SUM from a column in another table? I have tried a SELECT / FROM / WHERE construct but SQL complains about that. Regards Clive
I am working with data that has a lot of records that get updated and inserted frequently, and to avoid having to create formulas through code all over the place, I am experimenting with computed column formulas. I have a question though.. It works well for any addition or subtraction (columnA+columnB), however, when I try to use division (columnA/columnB), it only returns integers, no decimals. I would like to have decimals, particularly with a specific scale and precision and I would really like to attempt this without any coding. Any suggestions?
I have a table with fields called fname (First Name) and lname (Last Name). I need the user�s email thai is compose from lname and fname: LOWER(LEFT (fname,1) + lname)
Is there any difference between creatig this computed column ia a table or in a view in SQL Server 2000?
Dear all, Pls help me with this I have 2 tables Trip (TripID, Duration) Reserve(ReserveID, TripID, StartDay, EndDate) in which EndDate = StartDay + Trip.Duration How can I do this?
I have a table with fields called fname (First Name) and lname (LastName). I need the user�s email thai is compose from lname and fname:LOWER(LEFT (fname,1) + lname)Is there any difference between creatig this computed column ia a tableor in a view in SQL Server 2000?I can do:1. CREATE TABLE Users(fname varchar(20),lname varchar(20),email as LOWER(LEFT (fname,1) + lname) )Or2. CREATE TABLE Users (fname varchar(20),lname varchar(20))CREATE VIEW Vw_users (fname, Lname ,email)ASSELECT fname, Lname ,LOWER(LEFT (fname,1) + lname) )Is one of them is better?Paulo*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
basically col3 is a computed column. Now when ever a row in col1 or col2 is updated the computed column will reflect the new value. how does this happen in the background. does this use row level triggers or what other mechanism is used to maintain col3 - computed column
we can easily load a file into db tables. However, my main concern here is the number of columns in the file. A text file TEXT_1400.txt has 1400 columns. I am unable to load data to my db table using BCP or BULK INSERT commands, as maximum of 1024 columns are allowed per table in SQL Server 2008.
We can still go ahead and create ‘Wide Table’ (a special table that holds up to 30,000 columns. The maximum size of a wide table row is 8,019 bytes.). But when operating on wide table, BCP/BULK INSERT commands still fail. After few hours of scratching my head over BCP and BULK INSERT, I observed that while inserting BCP/BULK INSERT commands are unable to identify SPARSE columns and skip these columns, which disturbs column mapping and results in data conversion and trancation errors.
Is there any proper way to load this kind of files into the db table?
What is the difference between a computed column and a UDF? Is a computed column the same as the "Formula" field under Design Table in Enterprise Manager? Also, what is the proper syntax for the Formula field? Can I use regular SQL on it or is there more to it?
Hi, I have a small problem with my database. I've got following situation: I have a computed column, which value is base on currency rate: rent * rate. Users have to have possibility to change currency rate easily (maybe another table or constant). Is there any way to create formula, which would compute value properly, via constant or something like this? Or the easiest workaround would be load data into dataset (I'm building asp.net application - database will be very small - couple of hundreds of records) and make calculations programmatically?
Hi, I have a table with 4 columns let us say A,B,C,D. column D is computed column with formula A + '-' + B Now, i want to add one more condition to the formula which looks like "A + '-' + B + '-' + C".
Please let me know how to do this using T-SQL as i cannot open the table in design mode in production server.
i have a table containing the column "current month" and "current day" as smallint which contains the number of months since 1900-01-01 and the day of this month. now i want to trnslate this column in a smalldatetime ( not datetime !) value using a computed column and then create an index on that column.
the formula should be: dateadd(d,[current day]-1, dateadd(m,[current month],convert(smalldatetime,'1900-01-01')) )
trying to create an index on this column results in an error message saying that the formula is nondeterministic or imprecise
removing the convert statement leaving only the date results in a column of type datetime and creating the index works fine
replacing convert(smalldatetime,'1900-01-01') with a column name which has the type smalldatetime also allows to create an index but thats not what i want to do.
it seems that sql2000 thinks a convert from a string to a date is nondeterministic. Is there any possibility to create a const of type smalldatetime without using convert?
Any idea?
(besides this, datediff(d,'yyyy-mm-dd',anydate) is nondeterministic but datediff(d,dateadd(d,0,'yyyy-mm-dd'),anydate) is deterministic. strange...)
I am having a problem with using UDF as part of a temp table computed column. Here's the sample code: IF EXISTS( SELECT 1 FROM information_schema.routines WHERE routine_name = 'fn_test') DROP FUNCTION dbo.fn_testGO CREATE FUNCTION dbo.fn_test( @x int, @y int) RETURNS INT AS BEGIN DECLARE @z INT SET @z = @x + @y RETURN @z END GO
CREATE TABLE #X ( x INT, y INT, z AS (dbo.fn_test(x,y)) ) I receive the following error:
Server: Msg 208, Level 16, State 1, Line 2 Invalid object name 'dbo.fn_test'.
I do not get this error if I use a regular table. HELP!
I have a table that I cannot allow a computed field to exist on (due to a 3rd party software), so I am thinking I could create a view with a computed field that is persistent, is that possible?
the syntax below will not work, I am not even sure if this is possible, but if it can work, that would be great.
I am wanting to get the sum of jetfoot1, 2 & 3 and have the total added up as "total"
create view ViewSumReport as select JETFOOT1,JETFOOT2,JETFOOT3,(JETFOOT1+JETFOOT2+JETFOOT3)as [total] persisted from dbo.fielddata GO
I have a checksum calculation as a persisted, indexed computed column on a temporary table that I used to compare against original records to detect changes.
It seems that the update/ insert statements in my procs get out of sync on larger tables (500,000 rows +) with the checksum calculations. The only thing I can think of is that the column calculations are performed asynchronously in relation to the updates/ inserts. This is a problem for me.
Is my assumption correct? If it is, how can I adjust for this, i.e., force the computations to be performed synchronously or wait for the computations to complete before running comparisons?
I need to create an function similar to the "MATCH" function in Excelthat evaluates a number within a set of numbers and returns whetherthere is a match. I have put the example of what I see in excel in thecheck column. The "0" answer in the result column is in the fourthaccount in the list. Somehow I need to loop through the accountscomparing the result to the total and indicate a match in the checkcolumn. It wouldn't even need to tell me the row number; it could be a0 or 1.account total result check123770266.84124.2112377026131.050 412377026164.38-33.33123770260131.051237702678.7152.3412377167-31.34221.891237716731.34159.211237716738.55152 51237716731.34159.211237716715238.5512377167490.91-300.36123771670190.55123771670190.5512377167-31.3443.341237716731.34-19.341237716738.55-26.551237716731.34-19.3412377167152-14012377167490.91-478.9112377167012123771670121237736347.058412377363131.05012377363-45.38176.4312377363-47.05178.11237736347.0484.0112377363-47.04178.091237736347.058412377363541.11-410.06123773630131.0512377363672.15-541.11237750737.64152.91
I have a checksum calculation as a persisted, indexed computed column on a temporary table that I used to compare against original records to detect changes.
It seems that the update/ insert statements in my procs get out of sync on larger tables (500,000 rows +) with the checksum calculations. The only thing I can think of is that the column calculations are performed asynchronously in relation to the updates/ inserts. This is a problem for me.
Is my assumption correct? If it is, how can I adjust for this, i.e., force the computations to be performed synchronously or wait for the computations to complete before running comparisons?
Hello, does anyone know a website, where I can read something about the syntax of Computed Columns? I don't know how to enter the following expression in the computed columns field of MS SQL Server:
Instead of using Full-Text indices, which I don't like to manage, we've tried to use seperate tables that contain recordID, the word, a count of the word in the parent field and computed column which is the CHECKSUM() of the word column. I indexed the checksum column with a clustered index.
Works great in Query Analyser. But when the ASP page calls it, I get this message:
Microsoft OLE DB Provider for SQL Server (0x80040E14) INSERT failed because the following SET options have incorrect settings: 'ARITHABORT'.
Same for updates and deletes. The question is how should these SET settings be done? Any ideas would be greatly welcomed.
I am currently struggling with a problem bulk inserting data into sql server.
The application I am writing is multi-threaded and downloads about 2000 records every 2 seconds on x amount of threads (depending on bandwidth).
What I would like to do is find a 'friendly' way to insert this data into sql server without hammering the cpu.. I have tried the following with little success.
1, Using a single insert and thread.sleep(x * 20) to allow for massive data input, altough this made the application more stable and lowered cpu usage to very little the data takes about 60 times longer to download and process into the database.
2, Using a SqlDataAdapter and DataSet and updating the database via the .Update method of the data adapter.. Simply this was awful and took forever to process the data into the database.. (Took about 30 seconds to process 2000 records and Command Timeout was high).
3, Using OpenXML in SqlServer and parsing the data as an XML string (nText), although this method is fast its still very CPU intensive. I have to set the command timeouts very high to allow for this approach (because of the multi-threaded nature of the app).
Does anyone have any idea's on a cpu friendly approach to this problem ??
I'm using asp.net and the SqlBulkCopy command to insert a few lines of data into a table. I have the SqlBulkCopyOption.FireTriggers set, and a simple trigger on the table to take the inserted data and update a couple of other tables. Works fine if I only insert one record, but as soon as there are multiple records it fails.
So I presume that the trigger isn't firing on every line, but only once when the bulk insert is done?
Am I missing a trick? I can post some code if it will help - I'll have to get a screengrab of the error too.
The following produces no errors, but does not place any rows in the table:
USE MoneyManager GO BULK INSERT DailyPrices FROM 'C:DownloadsSecuritiess20070105.dat' WITH ( firstrow = 2, formatfile = 'C:DownloadsDailyPrices.fmt', errorfile = 'c:downloadsprice_error_file.txt' )
Hi at all,I'm trying to bulk insert a uniqueidentifier column from unicode file.In my file I have guid generated from c# application and they areformatted in this way (separated by "|") :guid | field1 | field2fc0c0c42-438e-4897-96db-8b0489e873ef|field1|field2In my destination table I have three column:id (uniqueidentifier)field1 (nvarchar)field2 (nvarchar)I use in bulk insert a format file like this :9.031SQLNCHAR00"| "1IDLatin1_General_CI_AS2SQLNCHAR00"| "2Field1Latin1_General_CI_AS3SQLNCHAR00"| "3Field2Latin1_General_CI_ASand I use this scriptBULK INSERT [dbo].[KWTA2] FROM 'd:WTA2.txt'WITH (FORMATFILE = 'd:wta2Format.FMT')It doesn't work, it prints outMsg 8152, Level 16, State 13, Line 2String or binary data would be truncated.I've also tried to specify in FMT file SQLUNIQUEID instead of SQLNCHARand it works perfectly but it imports another data. For example theguid fc0c0c42-438e-4897-96db-8b0489e873ef became00350031-0039-0033-3100-300030003000Please can you help me?Why sql converts alphanumerical GUID into only numbers ID?How can I bulk insert GUID? (I didn't find anything googling around : )Thanks!Bob
Hi Andrea, I have made a table which contain data inserted manually and also data that was inserted by using bulk insertion. I have no problems using the table with Grid View. But when I try to use a query like the following:
SELECT * FROM dbo.last WHERE VMake = 'Honda' AND VType = 'sedan' AND VColor = 'Red';
I would only get the data that were inserted manually. When I use the same query to filter data from a table that the data was inserted by using bulk insert, I get column names but no data.
And i have data in a file as follows ( column delimeter is | and row deleimeter is new line character ( windows ) )
4000000|10/25/2007 6:07:32 AM 4000001|10/25/2007 6:07:32 AM 4000002|10/25/2007 6:07:32 AM 4000003|10/25/2007 6:07:32 AM 4000004|10/25/2007 6:07:32 AM
BULK INSERT dbo.BulkTest FROM 'c:\insert.dat' WITH (FIELDTERMINATOR = '|',ROWTERMINATOR=' ') When i execute this statement its failing with the follwing message.
Bulk load data conversion error (type mismatch or invalid character for the specified codepage) for row 1, column 2 (SubDate ).
Can any one please let me know whats wrong in this and what should be done to make it work Quick response will be appreciated Thanks much ~Mohan
