I'm trying to the write the values to SQL Server Express database from LabVIEW 2018. I am using String as a datatype for my table columns. Since I am using String datatype, I have to provide a size of the column. My data contain nearly than 10000 characters. So, I given size of the column as 10000. But when I am trying the run this code I am getting the error. Refer to the screenshot below.
My question is, is there any column size limitation for the string datatype in LabVIEW? If yes, how can I give more than 8k characters into one column.
Attached here Front Panel and Block Diagram of my code.
Regards,
Azad
Related
What is the best way to store a large amount of text in a table in SQL server?
Is varchar(max) reliable?
In SQL 2005 and higher, VARCHAR(MAX) is indeed the preferred method. The TEXT type is still available, but primarily for backward compatibility with SQL 2000 and lower.
I like using VARCHAR(MAX) (or actually NVARCHAR) because it works like a standard VARCHAR field. Since it's introduction, I use it rather than TEXT fields whenever possible.
Varchar(max) is available only in SQL 2005 or later. This will store up to 2GB and can be treated as a regular varchar. Before SQL 2005, use the "text" type.
According to the text found here, varbinary(max) is the way to go. You'll be able to store approximately 2GB of data.
Split the text into chunks that your database can actually handle. And, put the split up text in another table. Use the id from the text_chunk table as text_chunk_id in your original table. You might want another column in your table to keep text that fits within your largest text data type.
CREATE TABLE text_chunk (
id NUMBER,
chunk_sequence NUMBER,
text BIGTEXT)
In a BLOB
BLOBs are very large variable binary or character data, typically documents (.txt, .doc) and pictures (.jpeg, .gif, .bmp), which can be stored in a database. In SQL Server, BLOBs can be text, ntext, or image data type, you can use the text type
text
Variable-length non-Unicode data, stored in the code page of the server, with a maximum length of 231 - 1 (2,147,483,647) characters.
Depending on your situation, a design alternative to consider is saving them as .txt file to server and save the file path to your database.
Use nvarchar(max) to store the whole chat conversation thread in a single record. Each individual text message (or block) is identified in the content text by inserting markers.
Example:
{{UserId: Date and time}}<Chat Text>.
On display time UI should be intelligent enough to understand this markers and display it correctly. This way one record should suffice for a single conversation as long as size limit is not reached.
I am moving a table from SQL Server to Redshift. I've exported the data and gotten it into a UTF-8 text file. When trying to load to Redshift, the COPY command fails, complaining the data exceeds the width of the field.
The destination Redshift table schema matches that of the source SQL Server table (i.e. varchar field widths are the same). If I understand correctly, Redshift's varchar size is in bytes, not characters, like SQL Server. So, multi-byte characters are causing the "too wide" problem.
I'd like to run a query to determine how big to make my varchar fields, but there doesn't seem to be a function that returns the number of bytes a string requires, only the number of characters in that string.
How have others solved this problem?
Field length and as consequence fields types might be critical in Redshift. Load sample data into RedShift table with maximum fields sizes. Sample has to be as big as possible. Than you will be be able to calculate real field sizes with disregard of the definitions in MSSQL Server, that might be much bigger than you really need.
I have been asked to code an SQL table that has a comment field that:
must be able to store at least several pages of text
What data type should I use, and what value equates to several pages of text?
In MS SQL varchar(max) stores a maximum of 2 147 483 647 characters
Depending on the Database you are using, there are Text or CLOB (character large object), which you should use for the column with the several pages of text.
The reason for this is, that the content of these columns are stored somewhere else in the database system (out-of-line) and don't decrease performance on other operations on this table (like e.g. aggregation of some statistaical data).
after some time i landed in sybase (ASE 15.. to be specific) world and i am bit terrified over time
missing functions and functionality i know from sql server makes me feel like i am in early 90'
to the point
i have to prepare single shot report
an have some text stored as image column (dont know why someone did that)
so what i did was
select CAST(CAST(REQUEST AS VARBINARY(16384)) AS VARCHAR(16384)) as RequestBody
from table
the problem emarges becouse some requests are longer than 16384
and have no idea how to get the data
and what is even worse i dont know where to look for information as sybase documentation is in best case scarse, and in comparison with MS world its non existant
According to the docs you need to use CONVERT function like this:
SELECT CONVERT(VARBINARY(2048), raw_data) as raw_data_str FROM table;
Instead of using varbinary(16384) and varchar(16384), try using varbinary(max) and varchar(max). In that case, the maximum datalength will be 2 GB.
See:
http://msdn.microsoft.com/en-us/library/ms176089.aspx and http://msdn.microsoft.com/en-us/library/ms188362.aspx
What is the length of the REQUEST column in the table?
I am importing data from a text file and have hit a snag. I have a numeric field which occasionally has very large values (10 billion+) and some of these values which are being converted to NULLs.
Upon further testing I have isolated the problem as follows - the first 25 rows of data are used to determine the field size, and if none of the first 25 values are large then it throws out any value >= 2,147,483,648 (2^31) which comes after.
I'm using ADO and the following connection string:
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=FILE_ADDRESS;Extended Properties=""text;HDR=YES;FMT=Delimited""
Therefore, can anyone suggest how I can get round this problem without having to get the source data sorted descending on the large value column? Is there some way I could define the data types of the recordset prior to importing rather than let it decide for itself?
Many thanks!
You can use an INI file placed in the directory you are connecting to which describes the column types.
See here for details:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms709353(v=vs.85).aspx