Hey,
I was doing some research on how SQL stores data on disk.
MSDN states that when storring a varchar, only the length of the data itself is used plus two bytes.
So, if you store "car" in a VarChar(50) it will take 5 bytes.
But when you store "car" in a VarChar(500) it will also take 5 bytes.
What is the reason users should define the parameter lenght?
Can you use VarChar(8000) whole the time, without any drawback?
Thanks
I have one question to all SQL Guru's
I know the basic difference between CHAR and VARCHAR of CHAR taking all the space it is declared with and VARCHAR taking only amount of space used.
I want to know or link to any doucment which gives the difference between CHAR and VARCHAR more than what is mentioned above.
Please this is a urgent requirment.
Thanks in advance.
What is the difference between the nvarchar and varchar datatypes? Which should be used?
View 2 Replies View Relatedwhat'z the difference between char & varchar, like i am doing a cast function, which one should be used..
View 11 Replies View Relatedwhat is the difference between nvarchar and varchar
View 3 Replies View Related
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?
Hi All:
I am new to Sql 2000 database,Now I'm planing to create a table in my databse,my table included below fields like this :
PoNo(the length is 15 characters) ,Supplier Name(the length is 50 characters).etc
but I don't how to select the datatype for them. should I select Char or VarChar ?
which one is the best slection ?
thans in advanced!
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.
Hi,
What is the difference updating a null value to char/varchar type column
versus empty string to char/varchar type column?Which is the best to do and why?
Could anyone explain about this?
Example:
Table 1 : tCountry - Name varchar(80) nullable
Table 2 :tState - Name char(2) nullable
Table 3 :tCountryDetails - countryid,state (char(2) nullable) - May the country contain state or no state
So,when the state is not present for the country ,i have two options may be - null,''
tCountryDetails.State = '' or tCountryDetails.State = null?
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.
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.
select convert(varchar(16), getdate(), 101)+LEFT(REPLACE(convert(varchar, getdate(), 108), ':', ''),4)
From above query I get
mmddyyyyhhmm
but it' s yyyy and hour can not be separated
04/12/200702:05
How can I separated the year and hour ?
Thanks
Daniel
I have a column of data in a table that has date formatted as '2006-03-26 00:00:00.000'
What T-SQL command that will alter the column so that it is now Varchar '03-26-2006'?I also want to know how to do the opposite... if I have '03-26-2006' via command, how do I convert the column of the table to be datetime from varchar
varchar(MAX)
Is there any advantage/disadvantage using varchar(MAX) instead of varchar(1000)
in my website the user enter some text contenti want to store that content into DB table,the table uses varchar datatype and have the maxlength(8000) but the user enters morethan 8000 chars , the DB not insert the data, it gives error,here iam using stored procedures(SP) ,pass the values through parameters .i am tried text data type but i cant insert. how can i resolve the problem. it won't accept the text data type as a SP parameter i want to retrive the data from db and display in a text box.
View 4 Replies View Relatedhi i m bit confused about using varchar(Max) what is the advantage of using it over conventional varchar .
kindly explain in detail.
Hi All,
I am trying to save a data into table
this is the table
task_id int 4
group_id int 4
from_name varchar 50
from_address varchar 50
email_subject varchar 100
body_format tinyint 1
body_content varchar 8000
priority tinyint 1
create_date datetime 8
notice body_content is varchar 8000. I am using store procedure to save it
CREATE PROCEDURE sp_AddEmailTask (
@GroupId int,
@FromEmail varchar(50),
@Subject varchar(100),
@Format int,
@Body varchar(7000)
)
AS
Set nocount on
insert into email_task
(
group_id,
from_address,
email_subject,
body_format,
body_content,
create_date
)
values
(
@GroupId,
@FromEmail,
@Subject,
@Format,
@Body,
getdate()
)
set nocount off
GO
However, somehow the body_content were cut. After saving sucessly, I
see the data in body_content is not what I want to save. Can anyone
explain this?
Thanks very much in advance.
Jusitn
Should I replace all my varchar fields to varchar(MAX) ?
What are the performance penalties to I get?
I have a field varchar(400) when I run a query in query anal. it is not displaying all text. What should I do in order to display all data?
View 3 Replies View RelatedIn a varchar parameter of a Stored Procedure how can I pass single quote(')?
Means I want to pass like 'x'y' in that field (and it is giving error).
Is it possible?
while scripting the database varchar(max) database comes as varchar(-1). Error Occured while restoring the database. Sample script generated query. Filename testname is datatype of varchar(max)
CREATE TABLE [newtest] (
[testno] [int] NULL ,
[testname] [varchar] (-1) COLLATE SQL_Latin1_General_CP1_CI_AS NULL
) ON [PRIMARY]
GO
Need any suggestion.
Thanks in advance!
Have A Nice Day!
I've only just discovered this! Shame on me.
So this is the future? 268 thousand times more space without the headache of text columns (and not being able to use them as parameter types for long csv's) are finally a thing of the past? Could it be? http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=66929
I only discovered it because I ran into a problem trying to create a trigger and so then I learnt that:
"SQL Server 2005 does not allow for text, ntext, or image column references in the inserted and deleted tables for AFTER triggers. However, these data types are included for backward compatibility purposes only. The preferred storage for large data is to use the varchar(max), nvarchar(max), and varbinary(max) data types. Both AFTER and INSTEAD OF triggers support varchar(max), nvarchar(max), and varbinary(max) data in the inserted and deleted tables."
http://msdn2.microsoft.com/en-us/library/ms191300.aspx
Has anyone experienced any problems converting over from text to varchar(max)?
Hi
I my database i am using varchar(50) data type and problem
is for every filed i have to assign the size of varchar i.e. varchar(10), varchar(100) etc...
Problem occur when the programmer forget to fixed the length of acceptance of data in frot end and user give the data more than 10 digit .. it will display an error message.
So, In Sql Server 2005 .. data type is varchar(max) ,
So I want to know I can change the data type of every varchar(1), varchar(10), varchar(100) etc... to varchar(max)
thanks
I have a field type of "varchar"
It can not accept to Store Arabic Characters!!! plus i can't change it into ntext or nvarchar my system which goin to export the data into SQL server by suing insert command will hang. so im stucked with varchar!!!
here some sample of my data stored currently in My SQL SERVER 2000
" / "
Plzzzz help me if there any other way to do it
Hi guys,
I'm new to MS-SQL 2005, I will ask you a bunch of questions and I hope I will not be too boring hehe !
I learned that in MS-SQL 2005, you can now use varchar(max), my question is why not always use varchar(max) since it will automatically use only the space needed ? Is there an advantage in specifying a size other than max when you use a varchar for an entry that can vary in length alot ?
Thank you very much,
Konnan
varchar(MAX)
Is there any advantage/disadvantage using varchar(MAX) instead of varchar(1000)
I am pretty new to SQL for SQL Server 2005. In a view I have a column CAST(Field1 as int). Field1 is a varchar.All works well except when the data is not numeric such as a '?' or '*'.How can I get around this, with a case statement, coalese?I only want to perform the CAST on valid numeric values.The valid values in the varchar field are blank, null,'0','1','2','3','4','5','?','*' and maybe othersThanks
View 11 Replies View RelatedI have a table with a column of varchar(4000) and another table with 2 columns that are varchar(2000)
Is it better to make these columns text columns?
The 2 varchar(2000) columns do not need to be searched, but many of the other columns in that table do need to be searched.
The varchar(4000) column has a full text index on it.
Any help would be appreciated
Thank you
i have used nvarchar as my datatype in sql server 2000 now
i have decided to change to varchar as i can increase the character length from 4000 to 8000
Do I Lose data if i change the datatype.
I am running a database to collect the results of multiple surveys. Results are stored in an UNPIVOTED form (see example)...SurveyID RespondantID QuestionID Answer
=========================================================
1 1 1 X
1 1 2 Y
1 1 3 Z
1 2 1 R
1 2 2 S
1 2 3 T
Most of the results are integer responses (from multiple choice questions) but some are free text. For effecieny purposes I split the answers into two tables (one where answer = smallint, the other where answer = varchar(500)) but this is causing a few problems pulling data out of the database.
Basically all I want to know if once the table starts collecting thousands, or even tens of thousands of responses then it was the right idea to split the tables (in terms of table size and search speed), or in actual fact it wont make any (noticeable) difference.
Thanks!
Hi,
I have a varchar(10) field in one of the sql2005 table. most of the data will be in the format of
xxxxx{yyyyy}
zzzz{eeeeee}
like above values i am storing into the column. Now i want to use only the value which is inside the brackets { }. Values inside the brackets are not fixed length but allways we use the brackets.
Please let me know if you have any idea.
I tried using the right(value,4).,.. but this is only for the fixed size. but like i said my situation is different length.please let me know if you have any idea.
Thank
-Dil
Hi ,
I have a website where we review cds ... the users write their own reviews ...
But when the reviews are displayed on screen all the breaks are gone and all the text comes in one block .
Can anyone advise on what to do ?
I tried to change from varchar to text but it didn't change anything.
Thanks for the help