what is the best way of comparing image/varbinary and nullable column in sql server?
this is what i do to find out the different in image column in 2 tables sharing the same structure:
Select *
From TblA s
Left Join TblB c On
s.Id = c.Id And Coalesce(Convert(VARBINARY(MAX), c.Image),'') <> Coalesce(Convert(VARBINARY(MAX), s.Image),'')
Where c.Id IS NULL
alternatively, i was thinking to compare the column with the size, but worry about the accuracy:
Select *
From TblA s
Left Join TblB c On
s.Id = c.Id And ISNULL(Datalength(c.Image),0) <> ISNULL(Datalength(s.Image),0) Where c.Id IS NULL
HiI moved to SQL Server 2005 (from 2000) and noticed there is a bettervariable to deal with binary arrays.I hava a table that hold 9 columns of images (BLOB). each array has adifferent size and can be larger than 4k.I've changed the column data type from image to varbinary(max).After the chnage, the size of the table grew from 22MB to 26MB.Any idea why? I though the new variable should be better.I have another table where there are 3 columns with binaries, the sizeof the arrays there is much smaller and vary from 32bytes to 150byteslong. when I changed the data type to varbinary the size of the tableshrunk by half!!now I'm completely confused...Gilad.
We used SSIS to move data from a table in SQL 2000 which had a column with the image datatype to a column in a table in SQL 2005 that has a datatype of varbinary(max). No errors were produced from the SSIS package.
There were a number of records where the DATALENGTH of the column with the image datatype was greater than 8000. Was the data truncated for these records?
This is probably a very elementary question, but I am not familiar with the application or the data.
Below is the source table in SQL 2000 and a select count(*) ...
I have a database that I am using as an archive for emails and am storing them in varbinary(max) data types. The database works fine for inserts and retrieval but I cannot delete large sets of records ( > 30K) without it timing out. I assume this is because SQL server isn't simply releasing the handle to the blob but is instead doing a lot of work reclaiming the space. Is there any flag I can set or approach I can use to resolve this issue?
I was considering moving the blobs into a seperate simple table and putting async triggers on the primary to delete the blobs, will this work?
Any ideas are appreciated. Besides the "store files in the file system" idea. - Christopher.
hi,i have inserted the image present in mydocuments using alter commandcreate table aa(a int, d image)insert into aa values (1,'F:prudhviaba 002.jpg')when i doselect * from aai am getting the result in the column d as0x463A5C707275646876695C70727564687669203030322E6A 7067how i can i view the image?pls clarify my doubtsatish
I have inherited a VS 2005 database with a table that has a column of type IMAGE. I need to change the image for one of the rows in the table. I have the new image in a *.PNG file on my C: drive. What is the correct method for inserting this file into the IMAGE column.
Hello, I'm working on a website that allows users to upload small JPEG files. I followed the article at http://aspnet.4guysfromrolla.com/articles/120606-1.aspx. On the webpage I'm using a formview control to insert new records in the database. As suggested in the article I removed the "type='object'" from the insert parameters for the image column. The data is saved by using a sqldatasource with stored procedures. The image column is of type varbinary(max) and allows null values. Everythings works fine as long as the user uploads an image. The data is saved correctly and on another page the image can be viewed. However if the user does not upload a picture and tries to save the new record the following error is thrown: �Implicit conversion from data type nvarchar to varbinary(max) is not allowed. Use the CONVERT function to run this query.� In the formviews iteminserting event I have the following code: Dim imageBytes(fileupload1.PostedFile.InputStream.Length) As Byte fileupload1.PostedFile.InputStream.Read(imageBytes, 0, imageBytes.Length) e.Values("Image") = imageBytes What code should I use in case the fileupload1 has no file? I tried something like: e.values("Image") = dbnull.value But that doesn't work. Any suggestions?
I need to put .doc data into a varbinary column for full text searching. I have created the db and columns but am unsure as to how to insert the varbinary data. I have found some discussions about inserting images but nothing explicitly on .doc files. Can anyone suggest resources or sample code?
I have a table with one of its column VARBINARY(MAX).
I want to make sure that the values in this VARBINARY(MAX) column is unique. SQL Server doesn;t allow to create Unique Constraint over VARBINARY fields - whats the best workaround for ensuring uniqueness on VARBINARY columns.
I get the following error when my insert has a DBNull value for a column of type varbinary(MAX). "Implicit conversion from data type nvarchar to varbinary(max) is not allowed. Use the CONVERT function to run this query." In my opinion, the .NET SqlDataAdapter is attempting to convert the null value to a nvarchar. Is it possible to insert a null value in varbinary(max)? I didn't have this problem with the image datatype. Is this a bug or is there a work around to this problem?
Hi, I was wondering if any SQL Server gurus out there could help me...I have a table which contains text resources for my application. The text resources are multi-lingual so I've read that if I add a html language indicator meta tag e.g.<META NAME="MS.LOCALE" CONTENT="ES">and store the text in a varbinary column with a supporting Document Type column containing ".html" of varchar(5) then the full text index service should be intelligent about the language word breakers it applies when indexing the text. (I hope this is correct technique for best multi-lingual support in a single table?)However, when I come to query this data the results always return 0 rows (no errors are encountered). e.g.DECLARE @SearchWord nvarchar(256)SET @SearchWord = 'search' -- Yes, this word is definitely present in my resources.SELECT * FROM Resource WHERE CONTAINS(Document, @SearchWord)I'm a little puzzled as Full Text search is working fine on another table that employs an nvarchar column.Any pointers / suggestions would be greatly appreciated. Cheers,Gavin.
I have a table in one of my databases that stores files in one of its columns. I need to be able to export this BLOB column into either a CSV or Excel file. I am forbidden from using xp_Cmdshell so I was wondering if there was a way to do this in the Cmd prompt.
Hi, I was wondering if any SQL Server gurus out there could help me...
I have a table which contains text resources for my application. The text resources are multi-lingual so I've read that if I add a html language indicator meta tag e.g. <META NAME="MS.LOCALE" CONTENT="ES"> and store the text in a varbinary column with a supporting Document Type column containing ".html" of varchar(5) then the full text index service should be intelligent about the language word breakers it applies when indexing the text. (I hope this is correct technique for best multi-lingual support in a single table?)
However, when I come to query this data the results always return 0 rows (no errors are encountered). e.g. DECLARE @SearchWord nvarchar(256) SET @SearchWord = 'search' -- Yes, this word is definitely present in my resources. SELECT * FROM Resource WHERE CONTAINS(Document, @SearchWord)
I'm a little puzzled as Full Text search is working fine on another table that employs an nvarchar column.
Any pointers / suggestions would be greatly appreciated. Cheers, Gavin.
Hi, I was wondering if any SQL Server gurus out there could help me...I have a table I'm trying to apply a full text catalog to, however no results are ever returned due to the text column being cataloged being of varbinary(max) that's being populated from a converted nvarchar(max) value - I've narrowed it down to this specifically, populating with non nvarchar text seems to work fine.To re-create the problem quickly...If I populate the column viaCONVERT(varbinary(max), 'test text')then there is no problem, I get results as expected.However if I populate the column viaCONVERT(varbinary(max), CAST('test text' as nvarchar(max)))no results are ever returned.Is this a bug with SQL Server 2005 Full Text Indexing? I'm happily creating full text catalogs when an nvarchar is not getting converted into a varbinary.I'm setting the Document Type column to '.html' (I've tried changing this to '.txt' in case it was a fault with the html ifilter but the problem persists so I believe I can rule this out).The reason I need to convert an nvarchar to varbinary is that the table holds multi-lingual text and I'm adding a html meta tag <META NAME="MS.LOCALE" CONTENT="ES"> to the beginning in order for the full text indexing word breaker to select the correct language to catalog the text with. The aim being to provide more relevant searches in users native languages (I've read a few articles that describe this technique, but it's the first time I've tried to apply it).Any pointers / suggestions would be greatly appreciated. Cheers,Gavin.
Hi, I was wondering if any SQL Server gurus out there could help me...
I have a table I'm trying to apply a full text catalog to, however no results are ever returned due to the text column being cataloged being of varbinary(max) that's being populated from a converted nvarchar(max) value.
To re-create the problem quickly...
If I populate the column via CONVERT(varbinary(max), 'test text') then there is no problem, I get results as expected.
However if I populate the column via CONVERT(varbinary(max), CAST('test text' as nvarchar(max))) no results are ever returned.
Is this a bug with SQL Server 2005 Full Text Indexing? I'm happily creating full text catalogs when an nvarchar is not getting converted into a varbinary.
I'm setting the Document Type column to '.html' (I've tried changing this to '.txt' in case it was a fault with the html ifilter but the problem persists so I believe I can rule this out).
The reason I need to convert an nvarchar to varbinary is that the table holds multi-lingual text and I'm adding a html meta tag <META NAME="MS.LOCALE" CONTENT="ES"> to the beginning in order for the full text indexing word breaker to select the correct language to catalog the text with. The aim being to provide more relevant searches in users native languages (I've read a few articles that describe this technique, but it's the first time I've tried to apply it).
Any pointers / suggestions would be greatly appreciated. Cheers, Gavin.
UPDATE: Below is a T-SQL script you can run to demonstrate the effect I'm experiencing...
Code Snippet
-- Create test database CREATE DATABASE FullTextTest GO USE FullTextTest GO
-- Create test data table CREATE TABLE TestTable ( pk UNIQUEIDENTIFIER NOT NULL CONSTRAINT tablePK PRIMARY KEY, varbinarycol VARBINARY(MAX), documentExtension VARCHAR(5), ) GO
-- The below single entry WILL BE FOUND (the text source is being entered directly) INSERT INTO TestTable (pk, varbinarycol, documentExtension) VALUES (NEWID(), CONVERT(VARBINARY(MAX),'<META NAME="MS.LOCALE" CONTENT="EN">test entry 1'), '.html')
-- The bellow two entries below WILL NOT BE FOUND (the text source is taken from an NVARCHAR(MAX) value) INSERT INTO TestTable (pk, varbinarycol, documentExtension) VALUES (NEWID(), CONVERT(VARBINARY(MAX), CAST('<META NAME="MS.LOCALE" CONTENT="EN">test entry 2' AS NVARCHAR(MAX))), '.html') INSERT INTO TestTable (pk, varbinarycol, documentExtension) VALUES (NEWID(), CONVERT(VARBINARY(MAX), CAST('<META NAME="MS.LOCALE" CONTENT="EN">test entry 3' AS NVARCHAR(MAX))), '.html') GO
-- Create the full text catalog sp_fulltext_database 'enable' GO CREATE FULLTEXT CATALOG TEST AS DEFAULT GO CREATE FULLTEXT INDEX ON TestTable (varbinarycol TYPE COLUMN documentExtension LANGUAGE 1033) KEY INDEX tablePK GO
-- NOTE: You might need to give the catalog a chance to build before running the script below.
-- Now do a search that SHOULD RETURN 3 ROWS of data, but ONLY 1 ROW IS RETURNED SELECT CAST(varbinarycol AS NVARCHAR(MAX)) FROM TestTable WHERE CONTAINS(varbinarycol, 'test')
I have table with the following structure : ID Result1 Reusult2 NewResult1 NewResult2 FinalResult -1----10------6-----------7------------9---- -2----32------16----------32-----------16--- -3----12------2-----------1------------9---- -4----50------6-----------9------------7---- -5----90------9-----------90-----------9---- -6----18------2-----------3------------2----
My problem :
I want to compare each record in column Result1 and NewResult1,Result2 and NewResult2 Such as my above table : With ID=2 and ID=5 : I need to update column "Final Result" with value equal 1 ,otherwise any records with value equal zero. Conclusion : If ((Result1=NewResult1) and (Result2=NewResult2)) --> Final Result =1 else Other Records -->Final Result=0 How to write sql statement ? Thank you very much !
I am a newbie with Reporting services and I have a question about matrix using... So I am using SSRS on an cube with MDX language. I have a matrix like that :
I have a table with one column. The values can be Y or N. How do I compare the 2 values and return a result depending on the comparison. For example, if I my column data looks like this.
Y N
I need to compare them and if they match return a specific value and if they are different return a specific value.
Hi,I have three columns and want to update the third column based on the comparison of first two columns in the same table.For instance:Col1 - val1, val2, val3, val4, val5......Col2 - NULL, NULL, val1, NULL, val2....Col3 - TRUE, TRUE, FALSE, FALSE, FALSE....Thanks for any help.
Hi All, I have a column in my table like so: 'D4B00 L2A00 L3A00 L6C00 P1C00 L2A28 P4B00 ' How do I check in SQL if any pieces have the first 3 character the same. In the above case, L2A is present twice. I need to do this because I need display disctinct items, therefore L2A needs to be displayed only once. Any help is appreciated. Thanks
How to select a column to compare two values in it with AND
Select distinct c.reg#, a.fname, a.lname, to_char(b.L#) as "L" from employee a, driver b, trip c where a.e#=b.e# and b.l#=c.l# and (c.reg#='PKR3344'AND c.reg#='WWF1155') order by c.reg#;
error no rows selected..I want c.reg# for the two values inclusive
Hello,In my MS SQL SERVER database i have an column with datatype image. Somerecords do have data in this column, some others don't. When i look at thistable in Enterprise Manager then i see in every field '<image>' so no way tosee directly wheter a filed has data or not. Is there a way to changedisplay of this column so i can see the binairy data in it?Marcel
I need to determine if a value for a group of rows is the same or different and I am not sure where to begin. I am fairly new to writing T-Sql code. I am working with SQL Server 2005. This is a work assignment; I am not a student.
I have two tables: One for Course and another for CourseDays. As the Course table implies, it lists courses for a school. The CourseDays tables has a row for each day a course is held. For instance, one course maybe held on Monday, Wednesday, and Friday, so there would be three rows, one row for each day. A given course could be held in a different room for each day. I am trying to write a query that returns one row for each course, and if the room number is the same for each day the class is held, return that room number in the row, else return 'Various'.
Course table: CourseID, Desc 1 English 2 History 3 Science
CourseDays table: CourseID, Day, RoomID 1 M 320 1 W 445 1 F 680 2 T 123 2 Th 123 3 M 514 3 T 514 3 W 521 3 Th 901 3 F 521
Expected results: CourseID, Desc, RoomID 1 English Various 2 History 123 3 Science Various
I simplified the example, as there are about 30 columns in the table and about half a million rows.
I want to display records from @table1 only when combination of col2,col3 and col4 are present in @table2.In Below case I want output as: below two records only.
'test1', 'need this record', 25, {d '1901-01-01'} 'test3', 'some longer value', 23, {d '1900-01-01'} declare @table1 table ( col1 varchar(10) not null, col2 varchar(200) null, col3 int not null,
Table A IdName 101Dante 102Henry 103Harold 104Arnold
Table B NumberName 102Dante 107Gilbert 109Harold 110Arnold 106Susan 112Marian
I want the result in table 3 like below, if value exists in Table A and not exists in Table B then the record should enter in table 3 with table name in new column, and vice versa.
Table C Col1Col2 HenryTable A Gilbert Table B Susan Table B Marian Table B
using below logic to get the values from tables..
select t1.columnA , t2.* from table1 t1 join table2 t2 on t2.columnB = t1.columnA
