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!
Hi,
Which of the above data type (alongwith size) should be used for storing things like Customer Name, Company name etc . ???
Also, what really is the benefit of one over the over :confused:
Thanks
can anybody please explain me why microsoft using nvarchar/nchar instead of varchar/char in northwind database and pubs database. I know if a column holds unicode data you should use nvarchar or nchar but for me all those tables in northwind/pubs are not holding unicode data. but still why microsoft settled for nchar/nvarchar.
View 2 Replies View RelatedCould someone please help me by explaining which one is best to use and when? For example, storing the word "Corona Del Mar" - which Data Type would be suggested?
Thanks.
Hi,
We are in process of converting all of the data type of the fields from CHAR/VARCHAR/TEXT into NCHAR/NVARCHAR/NTEXT (DBCS). Having more than 900 store procedure its look like real pain to make modification in all of the SPs.
After failed to find any help from GOOGLE, I am posting this request. I am basically looking for any automated tool which are convert data type in SP based on the field of the table used in the SP. Or at least which can provide me some sort of list which can helpful for doing manual reactoring.
PLEASE HELP ME!!!
Thanks,
Firoz Ansari
What is the difference between the above data types in SQL? Which datatype should I use if I wanted both numbers and characters?
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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.
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'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 the nvarchar and varchar datatypes? Which should be used?
View 2 Replies View Relatedwhat is the difference between nvarchar and varchar
View 3 Replies View RelatedHow can I get time difference of the following record :
STARTTIME ENDTIME
3:30 PM 4:30PM
7:30 PM 8:30PM
I have tried it by below query,
SELECT CONVERT(TIME,STARTTIME,108) - CONVERT(TIME,ENDTIME,108) FROM BATCH_MASTER
but it gives following error message
[color=red]Operand data type time is invalid for subtract operator.[/color]
We have few stored procedures that use nvarchar datatype, this was not issue on SQL server 7.0 but in 2000 becomes a big issue.
For example query that runs for 3 minutes in SQL server 2000 by replacing NVARCHAR to VARCHAR the same query runs for 2 seconds.
The biggest challenge that I have deals with tables and user-defined datatypes of NVARCHAR that has been bounded to the table.
How can I alter those without data corruption?
Hi,
I am updating a remote table using linked server in sql server 2005.
but in case of varchar and nvarchar i am getting an error :
"OLE DB provider "SQLNCLI" for linked server "LinkedServer1" returned message "Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done.".
Msg 16955, Level 16, State 2, Line 1
Could not create an acceptable cursor."
thanks in advance.
Thanks & Regards
Pintu
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?
Hello,
I am trying to convert a single code page MS Server database into a unicode database, using the unicode data types,NCHAR, NVARCHAR, NTEXT. The problem is that in the original database, indexes and constraints have been defined on the tables whose configurations need to be changed. As a result, the ALTER TABLE command fails. Are there any other alternative solutions?
Also, data from the old database needs to be preserved. The objective is to create a unicode database which keeps the old data intact as well as accepts the new data in unicode.
It would be great if you could help!
Thanks,
Sheetal.
Hello
in MS SQL 2000 for text it is possible ti use
char
nchar
varchar
nvarchar
what must be used and for what ?
I want to store normal text with occidental char (accents)
thank you
When I tried to insert armenian by doing the following
insert into tablex (field1) values (N'testdata')
it does not display in query analyzer or in the database as armenian.
When I copy this to word it does not convert it.
What else am I supposed to do to get that information to redisplay the correct way and I would appreciate any tutorials or samples you can show or direct me to.
Howard
Hi I have a table, which contains Char and NChar NOT NULL columns
Now I need to change it to NULL, when I use the following command, it fails for the following error,
The command I used,
ALTER TABLE <TableName>
ALTER COLUMN <ColName> CHAR NULL
ALTER TABLE <TableName>
ALTER COLUMN <ColName> NCHAR NULL
Msg 8152, Level 16, State 13, Line 1
String or binary data would be truncated.
The statement has been terminated.
But for the same table, the below command executes fine,
ALTER TABLE <TableName>
ALTER COLUMN <ColName> SMALLINT NULL
Also I can change the NULLABILITY from NOTNULL to NULL using Enterprise Manger, editing the table using Table Design and selecting Allow Nulls option.
I need a script to accomplish this task.
Any help would be greatly appreciated.
-Senthil
#1 This stored procedure can be used to search and replace substring in the char, nchar, varchar and nvarchar columns in all tables in the current database. You should pass the text value to search and the text value to replace. So, to replace all char, nchar, varchar and nvarchar columns which contain the substring 'John' with the substring 'Bill', you can use the following (in comparison with the SetTbColValues stored procedure, this stored procedure replace only substring, not the entire column's value):
EXEC replace_substring @search_value = 'John', @replace_value = 'Bill'
/* INFO USED HERE WAS TAKEN FROM http://support.microsoft.com/default.aspx?scid=kb;en-us;262499 */
DECLARE @X VARCHAR(10)
DECLARE @ParmDefinition NVARCHAR(500)
DECLARE @Num_Members SMALLINT
SELECT @X = 'x.dbo.v_NumberofMembers'
DECLARE @SQLString AS VARCHAR(500)
SET @SQLString = 'SELECT @Num_MembersOUT=Num_Members FROM @DB'
SET @ParmDefinition = '@Num_MembersOUT SMALLINT OUTPUT'
EXECUTE sp_executesql <-LINE 11
@SQLString,
@ParmDefinition,
@DB = @X,
@Num_MembersOUT = @Num_Members OUTPUT
Just Need Help On This Error
Server: Msg 214, Level 16, State 2, Procedure sp_executesql, Line 11
Procedure expects parameter '@statement' of type 'ntext/nchar/nvarchar'.
I dont know why im getting a errrror b/c I followed http://support.microsoft.com/default.aspx?scid=kb;en-us;262499 exactly
Database is SQL Server 2000
I have a field in a table that stores date of birth. The field's datatype is char(6) and looks like this: 091703 (mmddyy). I want to convert this value to a datetime datatype.
What is the syntax to convert char(6) to datetime?
Thank you in advance.
Hi,
I imported a table from Accees to SQL 7 with data in it.
I need to modify one of the datatype columns to "datetime" from nvarchar.
I tried to convert it manually, in SQL Server Enterprise Manager tool, but it gave me an error.
I also tried, creating another column "DATE2-datatype:datetime" and updating the column with the old one.
UPDATE users SET DATE2 = DATE.. But it also faild,..
How can I modify the column?
Thank you.
Need to know if the varchar datatype field will ingore leading zeros when compared with numeric datatype ?
create table #temp
(
code varchar(4) null,
id int not null
)
insert into #temp
[Code] .....
Hi guys..
i have so doubts in my mind and that i want to discuss with you guys... Can i use more then 5/6 fields in a table with datatype of Text as u know Text can store maximu data... ? acutally i am trying to store a very long strings values into the all fields. it's just popup into my mind that might be table structer would not able to store that my amount of data when u use more then 5/6 text datatypes...
and another thing... is which one is better to use as data type "Text" or "varchar(max)"... ?
if any article to read more about these thing,, can you refere to me...
Thanks and looking forward.-MALIK
I have used a query statement with the following WHERE string to 'Fill' a dataset.
"AND (A.ApptsDate > '" & strApptPreDate & "' OR (A.ApptsDate = '" & strApptPreDate & "' AND A.ApptsTime >= '" & strApptPreTime & "' ))" & _ and strApptPreTime is defined as:Dim strApptPreTime As String = SomaShared.strPadTime(CStr(dApptCalcNewDate.Hour) + ":" + CStr(dApptCalcNewDate.Minute))
Somehow, the dataset showed only the ApptsTime after 10 am. After more than 2 weeks of debugging, I still can see a dataset watch for > 10 amAppsTime only. Now I am guessting, the problem is 9 is different from 10 - 16, it all because 9 is single digit. Then I check the data type settings for these variables. Here are what I found:
In SQL Server Agent job, the ApptsTime data was 'inserted' by @NewApptTimes, which is declared as char(5).In SQL Server database, the ApptsTime was defined as nvarchar(15).
My question are: 1. The reason why there were no 9 am data for the dataset, is becasue 9 am of nvarchar(15) is not > 8:30 of strApptPreTime? 2. If the answer to the quation 1 is yes, how do I define AppsTime and/or strApptPreTime?
TIA,Jeffrey
Hi all,
There are several columns called enabled with a char datatype in my database. One enabled column per table. These columns either have a value of T or F (true or false), depending on whether they're enabled or not. I want to change these columns to a bit datatype and insert the relevant value of true or false...
I guess the best way to do this is to add a new column to a table with a bit datatype, and based on the value in the current enabled column, insert TRUE or FALSE.
Anyone ideas on the best way to accomplish this?
Thanks.
I can't seem to get nvarchar(max) to work with ADO 2.8 using sql native client.
I am creating a stored procedure and every time i attempt to add a parameter to the command object of type nVarChar(max) I receive the error
"Parameter object is improperly defined"
here is the code to add the parameter
cmd.Parameters.Append cmd.createparameter(@piComments,adLongVarWChar,adparaminput,,me.comments)
adLongVarWChar is the ado data type i am using to map to the new nVarChar(max) but it does not appear to be working.
Is this supported in ADO? I am using the sql native client connection to connect to the database as follows.
pubStrConnectionString = "Provider=SQLNCLI;" _
& "Server=.sqlExpress;" _
& "Database=MyDBName;" _
& "Integrated Security=SSPI;" _
& "DataTypeCompatibility=80;" _
& "MARS Connection=True;"
thanks
here is my problem:
i have a variable @sid_x as binary(16) = 0x4CF254AB0BA5D411AA3E00508BC5C413
and i want to use it as argument in sp_addlogin statement.
select @sqlcmd = 'sp_addlogin "test", @sid = ' + @sid_t
/* this doesn't work, because @sid_t is binary... */
select @sqlcmd = 'sp_addlogin "test", @sid = ' + convert (char (20), @sid_x)
/* this doesn't work either, because it doesn't convert to binary text */
my question, is there any way i can get @sid_x in follow text format
0x4CF254AB0BA5D411AA3E00508BC5C413 ?
Thanks a lot!
I'm designing a database that will not be that large (I would be surprised if it ever surpassed 50,000 rows across all tables), but will be accessed quite often, so I am doing my best to optimize its structure, such as doing 3NF, selecting appropriate data types, etc.
I have a few columns that will contain numeric data (such as an invoice number (from an external source) or location ID). However, one of my classes in college was about database design, and we were taught that if you won't be doing mathmatic computation on a field (such as the invoice or location fields I mentioned earlier), then you should use a string literal type (char, varchar, etc.)
Unfortunatly, the professor did not explain much as to why this should be done. From the standpoint of semantic analysis, these types of fields are probably more labels than they are numbers. However, I don't find that very convincing (or even helpful).
In short, my question is that given a column holding numeric data that isn't worked on in a mathematical sense, is it really better to mark it as a string literal than a number? Any articles or studies I can read relating to this?
I would think that comparisons would be faster with int, as well as data storage (though, as mentioned, that's not as big of a concern). Sadly, Google doesn't have many helpful resources. (Lots of stuff on char vs varchar, though.)
Hi,
I read the topic from JROdden and this case is similiar but...
I got several varchar fields with
values like
1.2
1.3
... these I can covert with
select CONVERT(dec(5,2), fieldname) as fieldname
In fact I also solved undefined- and NULL-values with.
CONVERT(decimal(12, 2), CASE WHEN GESCHKOSTMAX IS NULL OR
GESCHKOSTMAX < '0' THEN '0' ELSE GESCHKOSTMAX END) as GESCHKOSTMAX,
But now there are values like
1,4 and these ones neither CONVERT nor CAST will handle.
I tried the
SELECT DISTINCT KMPAUSCHALE
FROM extr_INTFIRMA
WHERE (isnumeric(KMPAUSCHALE) = 1)
and get
0,40
0.25
0.30 and so on...
The error is:
[Microsoft][ODBC SQL Driver][SQL Server]Error converting datatype varchar to decimal. (or float or numeric (whatever I tried))
I think the easiest way would be to insist on higher data quality but
I also would like to solve this interesting challenge.
Thanks for any hints
By the way, I followed rudys link to
http://rudy.ca/afdb.html
and now I know how I could protect myself !!!!
There must be a voice in my head saying:
Try the db-forum, try it and stay happy... ;-)
best regards and have fun with new year eve.
Michael
I am trying to run the following query:ALTER TABLE dnb_profileALTER COLUMN [family update date] datetimeand I keep getting the following error:Server: Msg 242, Level 16, State 3, Line 1The conversion of a char data type to a datetime data type resulted inan out-of-range datetime value.The statement has been terminated.Can anyone tell me how I can do this successfully??Thanks,Connie SawyerFoley & LardnerJoin Bytes!
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