varbinary

问题 In this project, there is a class which wraps ADO.NET for common data access like ExecuteDataReader , ExecuteScalar , etc.. When using these methods to call a stored procedure, it allows you to pass a Dictionary<string, string> of parameters (string key, string value), which are then added to the SqlCommand object as SqlParameter . There is a case where we have to save a document in the database. The document is a byte[] and the corresponding column in the database is varbinary(MAX) . We've

问题 I'm trying to create a stored procedure in SQL Server 2016 that converts XML that was previously converted into Varbinary back into XML, but getting an "Illegal XML character" error when converting. I've found a workaround that seems to work, but I can't actually figure out why it works, which makes me uncomfortable. The stored procedure takes data that was converted to binary in SSIS and inserted into a varbinary(MAX) column in a table and performs a simple CAST(Column AS XML) It worked fine

来源： https://stackoverflow.com/questions/25897140/converting-from-base64-string-to-varbinarymax-in-sql-server

问题 I am trying to convert a varbinary to varchar but it is causing some unwanted characters to show up, as shown below. Could someone please let me know if there is any best way to do it. I'm trying the following query SELECT BLOB_CONTENTS, CONVERT(VARCHAR(MAX), [BLOB_CONTENTS]), CONVERT(NVARCHAR(MAX), [BLOB_CONTENTS]) FROM [hie_temp].[V500].[CE_BLOB] WHERE EVENT_ID = '760365' varbinary code like this : 0x05028A64F2A9488645100E84053281148A4324080A0412A1209E4C2791CB2208EC7A3F2090C7 I am getting

问题 I'm using the Ethereum api. I want to store the information from the api into a mysql table. The address data looks like: 0x3f5ce5fbfe3e9af3971dd833d26ba9b5c936f0be 0x1d80982502f3bb75654df13aa32bbd5ac9cab7d6 0xaf13bbdbe1ff53c2df7109a53c217320d2d76ee2 ... I've been using just varchar column for these characters. Are there a better data type? I'm thinking maybe varbinary but I don't know if there's any advantages. The disadvantage is that the sql code will be messier as I will have to HEX() and

问题 i am Creating an image with C# Converting it to Byte[] -------> This is how i am doing it then Sending it to MySQL and storing it in VARBINARY the problem is now I don't know how to retrieve it TO display it as an image $query = mysql_query("SELECT * FROM sad_img WHERE ss_id='1'"); if( mysql_num_rows( $query ) > 0 ) $ui = mysql_fetch_assoc( $query ); and after that i have no clue, what to do. The internet is not providing mch information about this. Please help 回答1: You have stored the string

问题 I am attempting to use Filestream in sql server 2008 to store user uploaded images. My problem is that NHibernate will not error, but it also will not save the data into the database. No record is created. The Image class below is a custom class (not to be confused with System.Drawing.Image) public class ImageMap : ClassMap<Image> { public ImageMap() { WithTable("Images"); Id(x => x.ImageId).GeneratedBy.GuidComb().WithUnsavedValue(Guid.Empty); Map(x => x.ImageData); Map(x => x.Extension);

问题 I am attempting to use Filestream in sql server 2008 to store user uploaded images. My problem is that NHibernate will not error, but it also will not save the data into the database. No record is created. The Image class below is a custom class (not to be confused with System.Drawing.Image) public class ImageMap : ClassMap<Image> { public ImageMap() { WithTable("Images"); Id(x => x.ImageId).GeneratedBy.GuidComb().WithUnsavedValue(Guid.Empty); Map(x => x.ImageData); Map(x => x.Extension);

问题 I am attempting to use Filestream in sql server 2008 to store user uploaded images. My problem is that NHibernate will not error, but it also will not save the data into the database. No record is created. The Image class below is a custom class (not to be confused with System.Drawing.Image) public class ImageMap : ClassMap<Image> { public ImageMap() { WithTable("Images"); Id(x => x.ImageId).GeneratedBy.GuidComb().WithUnsavedValue(Guid.Empty); Map(x => x.ImageData); Map(x => x.Extension);

问题 Is there some efficient way how to get length of data in "varbinary(max) filestream" column? I found only samples with conversion to varchar and then calling the "LEN" function. 回答1: SELECT length = DATALENGTH(Name), Name FROM Production.Product ORDER BY Name "Returns the number of bytes used to represent any expression." T-SQL and quote taken from MSDN's DATALENGTH (Transact-SQL) library. 来源： https://stackoverflow.com/questions/748165/length-of-varbinarymax-filestream-on-sql-server-2008