I have a varchar(900) which means that I can use 900bytes, so if I am not wrong if the character is unicode, y only can use 450 because each character need two bytes.I have a databease with a column that use the intercalation general_latin_CI_AI, but I don't know if this intercalation use 1byte per character or use 2bytes per character.How can I know how many bytes need a character of a varchar column?
View 3 RepliesHello all,
I have recently been task with rewriting a database that holds large volumes of data, whilst ensuring that query can be run in optimal time. Having never really delved into this sort of thing before, I hoped you guys might be able to offer some advice and guidance.
The design I have inherited is based around 2 main tables:
[captured_traps]
[id] [int] IDENTITY (1, 1) NOT NULL
[snmp_version] [int] NULL
[community_name] [varchar] (255)
[packet_type] [varchar] (50)
[oid] [varchar] (500)
[source_ip] [varchar] (15)
[generic] [int] NULL
[specific] [int] NULL
[time_stamp] [varchar] (15)
[trap_entered] [datetime] NULL
[status] [int] NULL
[captured_varbinds]
[id] [int] IDENTITY (1, 1) NOT NULL
[captured_trap_id] [int] NOT NULL
[varbind_oid] [varchar] (500)
[varbind_text] [varchar (500)
The relationship between the two tables is on the "captured_traps (id)" to "captured_varbinds (captured_trap_id)". Currently the "captured_traps" table contains around 350 million rows, the "captured_varbinds" table contains around 900 million rows.
Now as you can probably gather this model runs like a....well it sort of hobbles more than runs hence the need to redesign.
My current thoughts on this are:
- Normalising all varchars - there is alot of duplicate values in most of the varchar fields.
- Full Text Indexing
However beyond that I am not sure which route to go down. After googling for most of today I have come across a number of "solutions" however I do not want to go steaming down the track of one of these to discover that it is fatally flawed somewhere.
I am querying a tableA with 1.8 million rows, it has id as its primary key and is a clustered index. I need to select all rows where I order by lastname. Its taking me 45 seconds. Is there anything i can do to optimize the query.Will creating a fulltext index on lastname If so, can you give me an example on how to create a full text index on lastname?
[Project1].[Id] AS [Id],
[Project1].[DirectoryId] AS [DirectoryId],
[Project1].[SPI] AS [SPI],
[Project1].[FirstName] AS [FirstName],
[Project1].[LastName] AS [LastName],
[Project1].[NPI] AS [NPI],
[Project1].[AddressLine1] AS [AddressLine1],
[Project1].[AddressLine2] AS [AddressLine2],
[code]...
SQL 7
One of my programmers brought an error to me that I need to get some clarification on ...
Its says:
The total row size (24301) for table xxxx eceeds the max number of bytes per row(8060). Rows that exceed the max number of bytes will not be added.
Thoughts ...
Hi,
I used to write the data in a database throught the component. Few days it worked fine and suddenly one day it showed the database is suspect and the file size is 0 bytes but actually is should have written lots of data.
But i have the datafile which shows zero bytes and when i try to attach it it gives an error:
Server: Msg 823, Level 24, State 6, Line 1
I/O error 38(Reached the end of the file.) detected during read at offset 0000000000000000 in file 'D:EorderdatabasePritamdbeorderpritamdb_Data.mdf'.
Connection Broken
Can anyone tell y is this. And it would be really if anyone can tell how to recover the data. The only thing which i have now is the data file which shows zero bytes.
Thanks.
I tried to ALTER TABLE calendar NOCHECK CONSTRAINT ALL and I got this error:
Warning: The table 'messages' has been created but its maximum row size (8321) exceeds the maximum number of bytes per row (8060). INSERT or UPDATE of a row in this table will fail if the resulting row length exceeds 8060 bytes.
I'm not too certain what this error means so I manually deleted the records in this table. I got the same error.
How to count how many bytes were taken per row in certern table?
Which method is the most correct and directly?
Thanks
I have looked far and wide and have not found anything that works to allow me to resolve this issue.
I am moving data from DB2 using the MS OLEDB Provider for DB2. The OLEDB source sees the column of data as DT_TEXT. I setup a destination to SQL Server 2005 and everything looks good until I try and run the package.
I get the error:
[OLE DB Source [277]] Error: An OLE DB error has occurred. Error code: 0x80040E21. An OLE DB record is available. Source: "Microsoft DB2 OLE DB Provider" Hresult: 0x80040E21 Description: "Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done.".
[OLE DB Source [277]] Error: Failed to retrieve long data for column "LIST_DATA_RCVD".
[OLE DB Source [277]] Error: There was an error with output column "LIST_DATA_RCVD" (324) on output "OLE DB Source Output" (287). The column status returned was: "DBSTATUS_UNAVAILABLE".
[OLE DB Source [277]] Error: The "output column "LIST_DATA_RCVD" (324)" failed because error code 0xC0209071 occurred, and the error row disposition on "output column "LIST_DATA_RCVD" (324)" specifies failure on error. An error occurred on the specified object of the specified component.
[DTS.Pipeline] Error: The PrimeOutput method on component "OLE DB Source" (277) returned error code 0xC0209029. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing.
Any suggestions on how I can get the large string data in the varchar column in DB2 into the varchar(max) column in SQL Server 2005?
I am trying to create a store procedure inside of SQL Management Studio console and I kept getting errors. Here's my store procedure.
Code Block
CREATE PROCEDURE [dbo].[sqlOutlookSearch]
-- Add the parameters for the stored procedure here
@OLIssueID int = NULL,
@searchString varchar(1000) = NULL
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
IF @OLIssueID <> 11111
SELECT * FROM [OLissue], [Outlook]
WHERE [OLissue].[issueID] = @OLIssueID AND [OLissue].[issueID] = [Outlook].[issueID] AND [Outlook].[contents] LIKE + ''%'' + @searchString + ''%''
ELSE
SELECT * FROM [Outlook]
WHERE [Outlook].[contents] LIKE + ''%'' + @searchString + ''%''
END
And the error I kept getting is:
Msg 402, Level 16, State 1, Procedure sqlOutlookSearch, Line 18
The data types varchar and varchar are incompatible in the modulo operator.
Msg 402, Level 16, State 1, Procedure sqlOutlookSearch, Line 21
The data types varchar and varchar are incompatible in the modulo operator.
Any help is appreciated.
I'm taking a look at a server to optimize it and need a better understanding of the Memory Available Bytes.
If the graph is showing this @ 100 is that a good or bad thing.
Articles are saying it shouldn't be below 4MB...
Can anyone elaborate?
thanks,
Jonathan
My database has chinese characters in.
Eventually I need to only get the first 50 bytes of the data field, but somehow, I use len('==data==',50), it would catch 50 chinese characters which make 100 bytes ...
can anyone help me?
Thank you very much no matter what the result is ;)
For the life of me I cannot figure out why SSIS will not convert varchar data. instead of using the table to table method, I wrote a SQL query so that I could transform the datatype ntext to varchar 512 understanding that natively MS is going towards all Unicode applications.
The source fields from Access are int, int, int and varchar(512). The same is true of the destination within SQL Server 2005. the field 'Answer' is the varchar field in question....
I get the following error
Validating (Error)
Messages
Error 0xc02020f6: Data Flow Task: Column "Answer" cannot convert between unicode and non-unicode string data types.
(SQL Server Import and Export Wizard)
Error 0xc004706b: Data Flow Task: "component "Destination - Query" (28)" failed validation and returned validation status "VS_ISBROKEN".
(SQL Server Import and Export Wizard)
Error 0xc004700c: Data Flow Task: One or more component failed validation.
(SQL Server Import and Export Wizard)
Error 0xc0024107: Data Flow Task: There were errors during task validation.
(SQL Server Import and Export Wizard)
DTS used to be a very strong tool but a simple import such as this is causing me extreme grief and wondering of SQL2005 is ready for primetime. FYI SP1 is installed. I am running this from a workstation and not on the server if that makes a difference...
Any help would be appreciated.
Hi guys,I'm currently trying to insert image into my SQL db.
I have tried a number of methods that were posted online, and so far
with no luck.My current code reads: Dim conn As New Data.SqlClient.SqlConnection() conn.ConnectionString = ConfigurationManager.ConnectionStrings("MainDBConnection").ToString conn.Open() Dim cmd As New Data.SqlClient.SqlCommand("SP_SAVEImage", conn) cmd.CommandType = Data.CommandType.StoredProcedure Dim sImageName As New Data.SqlClient.SqlParameter("@sImageName", Data.SqlDbType.VarChar, 50) sImageName.Value = sImageName Dim sImageType As New Data.SqlClient.SqlParameter("@sImageType", Data.SqlDbType.VarChar, 50) sImageType.Value = fileType Dim sImageData As New Data.SqlClient.SqlParameter("@sImageData", Data.SqlDbType.Image, uploadedFile.Length) sImageData.Value = uploadedFile cmd.Parameters.Add(sImageName) cmd.Parameters.Add(sImageType) cmd.Parameters.Add(sImageData) Dim reader1 As Data.SqlClient.SqlDataReader reader1 = cmd.ExecuteReaderRunning
through debug, everything runs up until the last line, where an error
is caught saying : Failed to convert parameter value from a
SqlParameter to a String I reckon it's to do with the input sImageData being input as a byte array - but I can't seem to find a way around it. Any help greatly appreciated!!
if SQL SERVER 2000 only allow 8060 bytes per row, then how can it store images or CLOB data? Is there a way that would let us change the maximum number of bytes per row? Any help would be greatly appreciated. Thanks.
View 1 Replies View RelatedI'm wondering if there's a way to use the string function replicate() to produce an output greater than 8000 bytes. From the documentation REPLICATE returns a varchar of max 8000 but I'm told there's a way to stop this restriction.
My mentor has been giving me tasks to try and accomplish and for this one I'm to create a stored procedure with no limitations, however I'm stuck at this replicate() problem.
Any help or guidance would be great.
Thanks
Hi,
We are trying to get a rough estimate of the size of the warehouse in terms of number of bytes. Now I understand that when I say char(2) datatype requires 2 bytes of memory. If this is correct then how many bytes does the following data type need -
1. smalldatetime
2. decimal(14,2)
3. decimal(12,2)
4. int
5. smallint.
6. decimal(9,0)
Also can you explain the byte allocation for a varchar column. Say varchar(20) for example.
Any help is appreciated.
Vivek
I have a field that is stored in bytes in sql2008 R2. I need a simple script that will convert this field to MB & round up. I'm not able to find anything but complicated functions a.
View 9 Replies View RelatedHi i want to know how much bytes will sql server take to store asingle alphabet like "a". i need to know similarly for all data types(including images).here i am doing a application where i need topredict the amount of space required in sql server to store the userfed dynamic data.Give me a handy solution.Regardsvisu
View 5 Replies View Relateddoes anyone know when you sync (for the first time), if the snapshot is sent to the remote/client side compressed or uncompressed? i'm not talking about the resulting .sdf file size. i'm talking about the actual bytes that are tranfered or the wire.
thanks,
bryan
Hello,
I have a field in my SQL Server 2000 with type "varbinary(8000)" which I merge onto my SQL CE 2.0 database. On my SQL CE 2.0, this field becomes "image".
Based on Microsoft's site: http://msdn2.microsoft.com/en-us/library/aa257477(SQL.80).aspx, "image" is used if the size is not over 510; however, when I populate this field in SQL CE, the maximum size that is stored is 510 bytes. I have verified my source data was complete (2622 butes) when again when I check the size of the field after an insert, it had only 510 bytes.
What's the work-around?
Thank you.
We are close to exceeding the Maximum Row size of 8K per row and the CIO asked me "how close are we to reaching the 8K row limit?"
I began by looking at byte requirements for the data types we are using
from the systypes table then I wondered, do the indecie, Foreign Keys and Primary Keys use bytes which must be included in my Calculation for current number of bytes used per Row.
Question: How do I calculate Current total number of bytes used per row.
Hi I have an image column (Spectrum) in a Table (ParticleEDS) which is populated with an array of a bunch of INT32's (4 bytes each)
Using TSQL is there any way that I can read each 4 bytes (convert this to an INT) and return this data for a given record (based on ParticleEDSID).
I know that there are 8192 byes (2048x4 bytes) that make up the image column.
I would like the output of the query/stored procedure to be:
Value
------------
1 2342
2 2334
3 3343
.....
2048 1001
I am thinking that the way to do this would be to convert every 4 bytes into an int and create a temporaty table with an integer column which I populate with int and then run a select * on this temporary table.
Does anybody have any pointers on how I can start to do this?
Hi All,I have created a table in sql server 2000 where at the time of creatingit, the row size excced 8K. I understand why I get the warning below:The table 'tbl_detail' has been created but its maximum row size(12367) exceeds the maximum number of bytes per row (8060). INSERT orUPDATE of a row in this table will fail if the resulting row lengthexceeds 8060 bytes.However, when I call a stored procedure from my ASP Code, which returnsme this warning, my ASP page displays the warning and does not move tothe next line.What can I do not to get this warning? How do I turn off warningmessages? I tried to wrap my stored procedure call code within SETNOCOUNT ON and SET NOCOUNT OFF but that didn't help.Any help would be really appreciated,Thanks,Boris
View 6 Replies View RelatedI have a stored procedure in vb.net that executes a sql statement to retreive a record from a table as xml using "for xml auto". The code looks something like the following:
sql = "select top 1 * from sometable for xml auto"
cmd = new sqlcommand(sql, cn)
xmlstring = cmd.executescalar.tostring
The stored procedure runs fine except when it is run by SQL Agent. Then, it only returns the first 512 bytes from the database.
I'm stumped. Does anyone have any ideas? Thanks.
Farid
I thought I understand the notion in the Title until I ran the query below. This query inserts a 5000 byte value into two columns in the same record and sql (2008) doesn't complain.
-- drop table table_1
create table table_1(
[mychar1] [varchar](8000) NULL,
[mychar2] [varchar](8000) NULL
)
insert into table_1 ( mychar1, mychar2)
values (replicate('a', 5000) , replicate('b', 5000))
select * from table_1
-- truncate table table_1
I just noticed that using Replicate ('a', 50000) doesn't cause an issue either. I'll be reviewing the replicate documentation too.
Hi,
We have Asynchronous Database Mirroring on SQL Server 2005 SP2 Entprise Edition/Windows 2000 Advanced Server. We noticed that log sent rate is quite low (average 1.3 MB/sec) in most of the cases whereas "Log bytes flushed/sec" is high (1.4 MB/sec) as a result Log send queue keeps on increasing and finally taking all the transaction log space. Our disk queue length is always in range of 0.01. And prinicipal and mirror servers are on local LAN.
I tried on low end server and high end server and in both cases Log sent rate is approx 1.3 MB/sec (Maximum 4 MB/sec).
Is there any limitation on Log sent rate?
How can we improve on log sent rate? Since both servers are on local LAN, network bandwith does not seems to be an issue.
Any help is greatly appreciated.
Thanks,
Ramesh
We have an app that threads together emails coming out of Exchange, using their messageid. To ensure threading works correctly, we need to ensure uniqueness of messageid, which we do with a unique index (we also need to be able to lookup by messageid when a message comes in).
We are currently porting the app from Oracle and PostgreSQL to SQL Server and are having problems with the 900 byte max length of an index. The problem is that the maximum size of a messageid (according to the Exchange docs) is 1877 bytes.
How can we guarantee uniqueness?
I have a table that contains a lot of demographic information. The data is usually small (<20 chars) but ocassionally needs to handle large values (250 chars). Right now its set up for varchar(max) and I don't think I want to do this.
How does varchar(max) store info differently from varchar(250)? Either way doesn't it have to hold the container information? So the word "Crackers" have 8 characters to it and information sayings its 8 characters long in both cases. This meaning its taking up same amount of space?
Also my concern will be running queries off of it, does a varchar(max) choke up queries because the fields cannot be properly analyzed? Is varchar(250) any better?
Should I just go with char(250) and watch my db size explode?
Usually the data that is 250 characters contain a lot of blank space that is removed using a SPROC so its not usually 250 characters for long.
Any insight to this would be appreciated.
Sql Server has many data types.
For Example:
smallint
Integer data from -2^15 (-32,768) through 2^15 - 1 (32,767). Storage size is 2 bytes.
I want to know that
If it contains like 0 or 100 or 1000 or -200 or -2000 or more or less.
What will its actual size?
2 bytes or change with the value.
Please also mention the reference with your answer. if available.
Hello!
I have a table that contains a field containing the total bytes for a file. I am displaying the information in a datagrid but need to display the information in MB. If I divide by 1,000,000 in my select statement as such:SELECT cs_fileSize / 1000000 AS MB, cs_fileSize
FROM t_client_spotsI get the following results:
MB | cs_filesize
1 | 1899602
1 | 1782281
I would like the results to be:
MB | cs_filesize
1.89 | 1899602
1.78 | 1782281
Any suggestions?
Thanks in advance!!
Microsoft OLE DB Provider for ODBC Drivers error ' 80040e14'
[Microsoft][ODBC SQL Server Driver][SQL Server]Updated or inserted row is bigger than maximum size (1962 bytes) allowed for this table.
database:microsoft 6.5 SQL
How can I solve this problem
thanks,shay
Hello ,
I would like to know the size in bytes required internally for each datatype MSSQLServer supports.
For eg.
I think for SMALLINT its 2 bytes
Would like to know the size in bytes for
SMALLINT, INTEGER, REAL, VARCHAR, DATETIME, IMAGE, DECIMAL
Thanks..
This is a question that I have not had an opportunity to test. Was wanting to know if anyone in the SQl world knows the answer. In SQL 2K and 2005 your rolls are limited to 8060 bytes without using varchar(MAX). My question is do you have to specify varchar(max) before your roll can exceed 8060 or does SQL 2005 exceed without specifing varchar(Max). Also does SQL 2005 expand it across multiple pages automatically. Please assist if you can.
Thanks