I need to know that How to convert nvarchar(255) to varchar(50) in SSIS Type Conversion?
I have tried converting my nvarchar(255) to DT_STR(Unicode) but still it is not working.
Maybe you want to try something like this in Derived Column SSIS element:
(DT_STR, 50, 1252) SUBSTRING([String],1, 50)
The cast formula is :
(DT_STR, «length», «code_page»)
Because you want to change from unicode to varchar(How to convert nvarchar(255) to varchar(50)), you need to know code page of varchar. Code page is Character encoding.
Usually you need to use code page which is in your SQL Instance, SQL Database, SQL Column.
If you try to write this new string in you table, there is column with property COLLATION, value can be not empty or be empty database default...
I found this page about Code page architecture, there is written how to relate SQL Collation with Code page.
SSIS Data Type SSIS Expression SQL Server
string (DT_STR, «length», «code_page») char, varchar
Unicode text stream (DT_WSTR, «length») nchar, nvarchar, sql_variant, xml
Related
I have this stored procedure:
Dbo.SprocName (#Id UNIQUEIDENTIFIER,
#ResponseCode INT OUTPUT,
#ResponseDescription VARCHAR(500) OUTPUT)
And it returns a dataset called say Result as a nvarchar(MAX) (always a single row).
I've tried OLE and ADO connections and as well as result sets. I've tried creating a table variable and storing the value there.
Nothing works.
I can see in the database that it's running successfully then it fails when returning the result data set.
I’ve done some debugging and I can assure the result string is returned as should be. The problem is that I don’t know how to handle this on SSIS.
The error that I get is:
Input string was not in a correct format
I appreciate any ideas.
Thanks.
EDIT: I have tried using a table variable again and it works. I guess I didn't do it well first time. sorry about that. Thanks!
One potential cause for your problem could be a mismatch in data types between SSIS and SQL Server.
An SSIS GUID data type does not match a SQL Server uniqueidentifier - the SSIS GUID has curly braces (e.g., {00000000-0000-0000-0000-000000000000}), while the SQL value does not. SQL cannot recognize the value as a unique identifier, and fails to convert.
To pass down a GUID, you will need to remove those curly braces, either in SSIS or in SQL. One approach I've used it to send it across as a VARCHAR and then strip out the curly braces, e.g.,
DECLARE #GUID VARCHAR(40) = '{00000000-0000-0000-0000-000000000000}'
DECLARE #CnvtGUID UNIQUEIDENTIFIER = REPLACE(REPLACE(#GUID, '}', ''), '{', '')
SELECT #GUID, #CnvtGUID
I am currently trying to convert an int field into a Uniqueidentifier, doing so by first converting the int into a (DT_WSTR, 100)
(Note: i have also tried (DT_STR) )
i have tried both the Derived Column and the Convert Data Transformations, but i always get an error when converting the then String to a GUID.
Here is what I have Already Tried:
NameOfDer.C Expression Data Type
1)ID_String (DT_WSTR, 100)ID_Int Unicode character string
-Below is where the error occurs-
2) GUIDTESTEST (DT_GUID)("{" + [ID_String] + "}") UniqueIdentifier
i have also tried it like this: (DT_GUID) [ID_String] (-Without the curly braces), but it failed just as bad.
Does anyone have an idead of what is Happening, i have also looked the data up on DataViewer after they are converted to Strings, and they all seem fine.
In SSIS you can't convert integer to GUID.
GUID has format xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx. So integer 5 can't be fit in that format.
Some guy did it with sql server, but if this don't gonna loose information?
The best thing what you can do, just generate real GUID for your rows.
I have a source flat file with values such as 24.209991, but they need to load to SQL Server as type money. In the DTS (which I am converting from), that value comes across as 24.21. How do I convert that field in SSIS?
Right now, I am just changing the type from DT_STR to DT_CY, and it gives a run error of 'Data conversion failed. The data conversion for column "Col003" returned status value 2 and status text "The value could not be converted because of a potential loss of data.".'
Do I use a Data Conversion task? And then what?
I've also tried setting the source output column to DT_NUMERIC, and then convert that to DT_CY, with the same result.
I've also tried using Derived Columns, casting the DT_STR field Col003 to (DT_NUMERIC,10,2)Col003 and then casting that to (DT_CY)Col003_Numeric. That's getting a cast error.
The flat file defaults to all fields being DT_STR. Use the Advanced option on editing the connection to have the numeric field as float (DT_R4). Then, in the advanced editing of the Flat File Source (on the Data Flow tab), set that output column to money (DT_CY).
Then, the field will convert without any additional conversions. The issue was leaving the source file definition as DT_STR.
If you don't have any null value use Data Conversion, and make sure you don't have any funny character (e.g. US$200 produce error)
If you have null or empty fields in your field and you are using Flat file source, make sure that you tick "Return null value from source.."
Another trick I have used is something like: (taxvalue != "" ? taxvalue : NULL(DT_WSTR,50)). in Derived Column transformation (you can just replace the field)
Generally SSIS doesn't convert empty strings to money properly.
For some reason in my scenario, the OLE DB Destination actually was configured to accept a DT_CY. However, casting to this format (no matter the length of the input and destination data, and no matter wether or not the data was NULL when it arrived) always caused the same issue.
After adding data viewers, I can conclude that this has something to do with the locale. Here in Denmark, we use comma (,) as decimal delimiters and dots (.) as thousands-delimiters, instead of the opposite.
This means that a huge number like 382,939,291,293.38 would (after the conversion to DT_CY) look like 382.939.291.293,38. Even though I highly doubted that it could be the issue, I decided to do the opposite of what I originally had intended.
I decided to go to the advanced settings of my OLE DB Destination and change the DT_CY column's type to DT_STR instead. Then, I added a Derived Column transformation, and entered the following expression to transform the column before the data would arrive at the destination.
REPLACE(SUBSTRING(Price, 2, 18), ",", ".") where Price was the column's name.
To my big surprise, this solved the problem, since I figured out that my OLE DB Destination was now sending the data as a string, which the SQL Server understood perfectly fine.
I am certain that this is a bug! I was using SQL Server 2008, so it might have been solved in later editions. However, I find it quite critical that such an essential thing is not working correctly!
I have imported a csv file containing spatial area information in varchar, then converted varchar(max) values to varbinary(max) by adding '0x' to varchar(max) values prior to conversion. By then, apart from the '0x' in the beginning, the data in varbinary(max) column looks exactly the same as the varchar(max) one in converted to text.
Now I run the following script:
select geometry::STGeomCollFromWKB(wkb, 4326) from dbo.MyTable
where WKB is the varbinary(max) column.
Running the above script throws this error: 'The well-known binary (WKB) input is not valid'
The source of data is from Open Street Map so no doubt they are correct area data. So I assume there must be something wrong in what I am doing or I am missing some point to convert WKB to geometry data type.
Could anyone help please?
I assume the problem is when converting the varchar data to varbinary you are converting the actual character representation of the binary data, rather than just changing the type to binary.
Eg, if you have the data 0xDEADBEEF in your varchar column, then doing
convert(varbinary(max), 'DEADBEEF') will convert the ascii character representations into binary.
What you want to do instead is convert the hex string into binary, which is possible using the style parameter of convert.
SELECT convert(varbinary(max), 'DEADBEEF', 2)
should do what you want to convert your varchar wkb data into real binary.
So I am currently working on a migration from an old Advantage database server to SQL 2005 using SSIS 2008. One of the columns in the old Advantage database is a MEMO type. By default this translates to a DT_TEXT column. Well in the new database I do not need this large of field, but can limit it to something such as VARCHAR(50). I successfully set up a derived column transformation to convert this with the following expression:
(DT_STR,50,1252)[ColumnName]
Now I want to go a step further and replace all NULL values with an empty string. This would seem easy enough using an ISNULL([ColumnName])?"":(DT_STR,50,1252)[ColumnName] expression, but the problem is that the OLE DB Destination contains the following error
Cannot convert between unicode and non-unicode strings...
So apparently the whole ISNULL expression converts the data type to Unicode string [DT-WSTR]. I have tried a variety of casts upon the whole expression or different parts, but I cannot get the data type to match what I need it.
First, is it possible to convert the DT_TEXT type directly to unicode? From what I can tell, the casts don't work that way. If not, is there a way to get an expression to work so that NULL values get converted to empty strings?
Thank you for all your help!
Give this a try in your derived column.
(DT_STR,50,1252) (ISNULL(ColumnName) ? "" : (DT_STR,50,1252) ColumnName)
It includes an additional type cast with the Conditional (?:) in parentheses to ensure the desired processing sequence. I think your original expression was implicitly casting to DT_WSTR because the "" defaults to DT_WSTR. With this new version, you force the cast to DT_STR after the expression is evaluated.
I figured something out that works. It may not be the best solution, but it will work for my situation.
From my OLE DB source I first did a Derived Column. This I used the ISNULL which ended up converting it to a DT_WSTR unicode type. although I could not get any casts to get it back to the type required, I then added a Data Conversion transformation in-between the Derived Column and the OLE DB Destination. This would take the input string and convert it back to a DT_STR. This all feels a little annoying converting so many times, but the column does not contain any funky information that I should have to worry about, so I suppose it will work.
Thanks for all those who pondered the solution, and if you find some awesome way to tackle it, I would be more than interested.