I've never had to do this before but I'm looking to do a SQL replace on varbinary data. I'm trying this but it's not successfully replacing, I think because it's treating the data as varchar and then cast back to varbinary. This stemmed from blank spaces at the end of these values but are not actual 'spaces' so RTRIM doesn't work in this scenario (bold below).
Example of Data trying to change:
0x457874656368203430304120414320636C616D70206D657465722C2041432063757272656E74206D6F64656C20746F206D65657420796F7572206170706C69636174696F6E206E656564732E20203230303020636F756E74204C434420646973706C61792E20204869676820616363757261637920666F722063757272656E74206D6561737572656D656E74732E2020302E3922202832336D6D29206A61772073697A65206163636F6D6D6F646174657320636F6E647563746F727320757020746F203330304D434D2E2020436F6E74696E756974792062656570657220616E642064696F646520746573742E20204461746120686F6C6420616E64206D617820686F6C642E20204F7665726C6F61642070726F74656374696F6E20666F7220616C6C2072616E6765732E20204F76657272616E676520616E64206C6F77206261747465727920696E64696361746F72732E20204175746F72616E67696E672077697468206175746F20706F776572206F66662E0D0A090909090909090909090D0A090909090909090909090D0A090909090909090909090D0A09090909090909090909
Script:
update digitalassetcontent
set content = (CAST(REPLACE(content, '0D0A09090909090909090909', '') as varbinary(MAX)))
update digitalassetcontent
set content = REPLACE(content,0x0D0A09090909090909090909,0x)
Related
We have a database hosted on our SQL Server 2016 server that has email content stored in an IMAGE type column. I am trying to convert the data to its string representation. Everything I've read says that I should be able to just use CONVERT(VARCHAR(MAX), Field, 1) but that's not working. I've tried the following as a test:
declare #body varbinary(max);
select #body = substring(cast(body as varbinary(max)),1,13) from dbo.arc_bodies where id = -2147467502
select #body, convert(varchar(1000), #body, 1), convert(varchar(1000), 0x3C68746D6C3E)
So I take the first 13 bytes (just for testing I kept the data short instead of grabbing the whole column) from the "body" IMAGE field and convert it to VARBINARY. In the last statement, I show the contents of #body, try the convert, and try the convert by just copying the raw data.
This is what I end up with:
(No column name) (No column name) (No column name)
0x3C68746D6C3E0D0A3C68656164 0x3C68746D6C3E0D0A3C68656164 <html>
The convert of the #body returns the exact same data as the raw binary but the convert of the raw data works. What am I doing wrong?
In 3rd column in the last query you don't use any style. Just do the same for the 2nd one:
select #body, convert(varchar(1000), #body), convert(varchar(1000), 0x3C68746D6C3E)
A reference to MS docs
I'm trying to find and replace very long HTML text in a SQL Server temp table (I'm using SQL Server 2012).
The query structure is:
UPDATE #Descriptions
SET Desc1 = replace(Desc1, 'VERY LONG HTML 1','VERY LONG HTML 2')
WHERE Desc1 like 'VERY LONG HTML 1'
I'm getting
Text or binary data will be truncated
error. The HTML parts are long, but should fit easily - whole thing fits in varchar(max) and these are only parts of it.
Can anyone help please?
Thank you!
M.
try using this :
field = replace(cast(field as varchar(max)),'string' ,'replacement')
As Sean Lange pointed out it's because of output string being truncated. This can be found in official documentation:
Return Types
Returns nvarchar if one of the input arguments is of the nvarchar data type; otherwise, REPLACE returns varchar. Returns
NULL if any one of the arguments is NULL. If string_expression is not
of type varchar(max) or nvarchar(max), REPLACE truncates the return
value at 8,000 bytes. To return values greater than 8,000 bytes,
string_expression must be explicitly cast to a large-value data type.
This can be workarounded by splitting your string into multiple string of fixed length, replacing data in there and then concatenating them back together.
In a column in a SQL Server database table, the value has a format of X=****;Y=****;Z=5****, where the asterisks represent strings of any lengths and of any values. What I need to do is to change that 5 to a 4 and keep the rest of the string unchanged.
Is there a way to use something like regular expressions to achieve what I want to do? If not using regular expressions, can it be done at all?
MS SQL sadly doesn't have any built in regex support (although it can be added via CLR) but if the format is fixed so that the part you want to change isZ=5toZ=4then usingREPLACEshould work:
REPLACE(your_string,'Z=5','Z=4')
For example:
declare #t table (str varchar(max))
insert #t values
('X=****;Y=****;Z=5****'),
('X=****;Y=**df**;Z=3**sdf**'),
('X=11**;Y=**sdfdf**;Z=5**')
update #t
set str = replace(str,'Z=5','Z=4')
-- or a slightly more ANSI compliant and portable way
update #t
set str = SUBSTRING(str,0, CHARINDEX('Z=5', str)) + 'Z=4' + SUBSTRING(str, CHARINDEX('Z=5', str)+3,LEN(str))
select * from #t
str:
X=****;Y=****;Z=4****
X=****;Y=**df**;Z=3**sdf**
X=11**;Y=**sdfdf**;Z=4**
We need more information. Under what circumstances should 5 be replaced by 4? If it's just where it occurs as the first character after the Z=, then you could simply do...
set Col = Replace(Col,'Z=5','Z=4')
Or, do you just want to replace 5 with 4 anywhere in the column value. In which case you'd obviously just do...
set Col = Replace(Col,'5','4')
Or possibly you mean that 5's should be replaced by 4's anywhere within the value after Z= which would be a lot harder.
update Table set Field = replace(Field, ';Z=5', ';Z=4')
And let's hope that your asterisked data doesn't contain semicolons and equality signs...
SQL Server 2008 - Table contains nvarchar(max) datatype and store hindi & english data without N' prefix. like - "मांगलिक welcome" but in table store as "×梻çÜ·¤ welcome".
Please guide how to display the data from SQL server in .net.
The N prefix only denotes the string is NVARCHAR as opposed to VARCHAR
See this for more info
C# is Unicode by default so your data will be ok.
In fact re-reading your question I'm not sure what you are asking.
Are you saying you store the data in the database WITHOUT the N prefix ? Is this done via .net ?
Can you please make your question clearer ?
** EDIT
I'm not sure you can. The data outside of the non Unicode code page will be lost.
Check this page here for further details
First try to create a table as shown:
Create table TestLang (strText nvarchar(max))
Next try to insert values
insert into TestLang values ( N'मांगलिक')
insert into TestLang values ( N'Welcome')
Now try to search the name as shown:
SELECT * FROM TestLang WHERE strText LIKE N'मां%'
UPDATE:
If you want to display the data try this way:
string input = "0928;0940;0932;092E;";
Regex rx = new Regex(#"([0-9A-Fa-f]{4});");
string output = rx.Replace(input, match => ((char)Int32.Parse(match.Groups[1].Value, NumberStyles.HexNumber)).ToString());
Output: "नीलम"
Took from here
I have an Access front end that links to a SQL Server backend.
There are 3 fields in a table that I am trying to convert to text from the backend:
o_name varbinary(2000)
O_PropertyBinary1 varbinary(2000)
O_PropertyBinary2 image
I can convert the o_name field using:
convert(varchar([max]),[O_Name])
and that works fine.
e.g. 4153534554 = ASSET
However, what can I use for the other two fields, as it seems I can't convert an image field and converting the O_PropertyBinary1 comes out with garbage characters.
The output is depended on the stored data an the appropriate conversion.
If the stored data is binary e.g. Bitmaps, converting to text will never give a usable result.
If data stored is text, it could be Varchar or NVarchar and kind conversion is depending.
in the example below VC_VB2NVarchar and VC_IMG2NVarchar would display your described garbage characters
Declare #tab Table(nvc NVarchar(100),vc Varchar(100)
,img image,vb VarBinary(200),img2 image,vb2 VarBinary(200))
Insert into #tab (nvc,vc) Values ('123456789','123456789')
Update #tab set vb=Convert(VarBinary(200),nvc),img=Convert(Image,Convert(Varbinary(max),nvc))
,vb2=Convert(VarBinary(200),vc),img2=Convert(Image,Convert(Varbinary(max),vc))
Select nvc,vc
,CONVERT(Nvarchar(100),vb) as NVC_VB2NVarchar
,CONVERT(Varchar(200),vb) as NVC_VB2Varchar
,CONVERT(Nvarchar(100),Convert(VarBinary(max),img)) as NVC_IMG2NVarchar
,CONVERT(Varchar(200),Convert(VarBinary(max),img)) as NVC_IMG2Varchar
,CONVERT(Nvarchar(100),vb2) as VC_VB2NVarchar
,CONVERT(Varchar(200),vb2) as VC_VB2Varchar
,CONVERT(Nvarchar(100),Convert(VarBinary(max),img2)) as VC_IMG2NVarchar
,CONVERT(Varchar(200),Convert(VarBinary(max),img2)) as VC_IMG2Varchar
from #Tab