blob

问题 I am reading file from ResultSet and it's required to save file into Oracle Database. ... ResultSet rs = ... java.sql.Blob myfile = rs.getBlob("field") java.io.OutputStream os = ((oracle.sql.BLOB) myfile).getBinaryOutputStream(); I get get this error message java.lang.ClassCastException Any one have solution to this? Thanks! 回答1: I have found the solution. I'd like to share with those who has this problem. The code to get outputstream from oracle blob is: java.io.OutputStream os = ((oracle

问题 When using BLOBs with more than 8000 bytes of data, you need to specifically set Parameter.SqlDbType = SqlDbType.Image to make it work (as explained here). Dapper, when it sees a byte[] field, defaults to a SqlDbType.Binary , which means for larger blobs, the inserts and updates will fail with a data truncation error. Is there an elegant solution to this problem? Only option I can see is to code the entire transaction with ADO.NET methods. 回答1: I had the same problem. Resolved as follows:

问题 The Question Assuming I make an indexed view on a table containing a varbinary(max) column, will the binary content be physically copied into the indexed view's B-Tree, or will the original fields just be "referenced" somehow, without physically duplicating their content? In other words, if I make an indexed view on a table containing BLOBs, will that duplicate the storage needed for BLOBs? More Details When using a full-text index on binary data, such as varbinary(max) , we need an

问题 I have a blob and want to download it. It works for Chrome, Firefox, IE10 and higher. The problem is IE9. var isIE = /*@cc_on!@*/false || !!document.documentMode; var blob = new Blob([data], {type: "application/pdf"}); if (isIE) { window.navigator.msSaveOrOpenBlob(blob, "Download.pdf"); } else { var link = document.createElement('a'); link.href = window.URL.createObjectURL(blob); link.download = "Download.pdf"; link.id = "TEST"; $('body').append(link); document.getElementById("TEST").click();

问题 I want to create a database where text and images will be stored using blob. There will be about 5-6k entries and the size of the image will be around 1MB. That means 5-6GB of storage. Will my app be able to handle all that storage or it will crash? I wonder cause my phone is 16GB and it will be around 50% of phone's free storage. In case blob doesn't work is there an other method I can use? 回答1: SQLite itself will handle that much data just fine. (Databases can have up to 140 TB.) It might

问题 I want to create a database where text and images will be stored using blob. There will be about 5-6k entries and the size of the image will be around 1MB. That means 5-6GB of storage. Will my app be able to handle all that storage or it will crash? I wonder cause my phone is 16GB and it will be around 50% of phone's free storage. In case blob doesn't work is there an other method I can use? 回答1: SQLite itself will handle that much data just fine. (Databases can have up to 140 TB.) It might

问题 I am creating a application in which I am downloading a file. For this I get response from java class in js and download this response.For this my java code is - @ApiOperation(value = "", notes = "") @Path("/getProjectJSONTODRAW/{implementation}") @GET @Timed public Response getProjectJSONTODRAW(@PathParam("implementation") String implementation) { File file = new File(path+File.separator+fileName); InputStream inputStream =null; String mimeType =null; if (!file.exists()) { String

问题 I'm just curious as to why this choice was made - it basically rules out changing the compression algorithm used by Git - because it doesn't use the SHA1 of the raw blobs. Perhaps there is some efficiency consideration here. Maybe ZLIB is faster at compressing a file than the SHA1 algorithm is at creating the hash, so therefore compressing before hashing is faster? Here is a link to the original Git READMEby Linus: http://git.kernel.org/?p=git/git.git;a=blob;f=README;h

问题 I'm just curious as to why this choice was made - it basically rules out changing the compression algorithm used by Git - because it doesn't use the SHA1 of the raw blobs. Perhaps there is some efficiency consideration here. Maybe ZLIB is faster at compressing a file than the SHA1 algorithm is at creating the hash, so therefore compressing before hashing is faster? Here is a link to the original Git READMEby Linus: http://git.kernel.org/?p=git/git.git;a=blob;f=README;h

问题 So I have a vbscript that pulls data from an access database Example: db = "C:\Users\username\databases\employeeID.mdb" TextExportFile = "C:\Users\username\databases\Exp.txt" Set cn = CreateObject("ADODB.Connection") Set rs = CreateObject("ADODB.Recordset") cn.Open "Provider = Microsoft.Jet.OLEDB.4.0; " & "Data Source =" & db strSQL = "SELECT IDNumber+','+Name FROM employeeID " rs.Open strSQL, cn, 3, 3 Set fs = CreateObject("Scripting.FileSystemObject") Set f = fs.CreateTextFile