Update binary data sql server

This has to be in script. I have a script in T-SQL that generates dummy data. I tried the following and it works, but then all other users have to have "face. Is there any way to update the photo column using hex value. Here are the steps:. I the script, i want to use the hex value i generated to update the photo column. How do i do that? Somthing come to my mind, but did not try that. Try to convert data to varbinary max and then update it. I think you are getting wrong image just because of Endianness.

If you are sending bytes beyond machine boundaries then you have to do reverse the bytes. Sign in. United States English. Ask a question. Quick access. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more.

Asked 6 years, 10 months ago. Active 6 years, 10 months ago. Viewed 3k times. Improve this question. Andrea Andrea Add a comment. Active Oldest Votes. It might be best if you just check if the file exists first. Moves to the first record by setting the Position property of the BindingManager to 0.

Moves to the previous record by setting the Position property of the BindingManager to one less than the current value. Moves to the next record by setting the Position property of the BindingManager to one more than the current value. Moves to the last record by setting the Position property of the BindingManager to one less than the number of records.

Passing the value CommandBehavior. SequentialAccess causes the DataReader to load the data sequentially as it is received rather than the default behavior of loading one row of data at a time. Some data sources do not behave in this wayfor example, Microsoft Access reads the entire BLOB into memory rather than loading it sequentially as it is received. The default behavior of the DataReader allows data to be read from fields in the row in any order.

When using SequentialAccess , the fields must be read in the order that they are retrieved and once a field is read, the previous fields in that row are no longer available. This method allows you to read the data as a sequence of smaller pieces of a defined number of bytes chunks to reduce system resources required when with dealing with large files.

The solution demonstrates this using a buffer with an arbitrary size of bytes. Check for null values when using typed accessor methods , if necessary. Cast the result of the ExecuteScalar method to a Byte array if it contains binary data or to a String if it contains character data.

The following code demonstrates this technique:. A BLOB can be quite large and may require a lot of system memory to be written to a data source as a single value. NET data provider.