Better Design Than Using A Bit Datatype
May 9, 2001
SQLServer7, NT4. We search on Employees, Locations, things like that. We use a bit column to designate whether or not the status of the employee or location is active or inactive. Knowing that you can't create an index on a bit column or making the datatype an integer and indexing the column would not help the query performance, does anyone have a suggestion on how they have improved their design for searches in cases like this? Thank you in advance for the help.
Mark
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Jul 17, 2006
I am loading data from an external source into SQL Server via ASP.NET/C#. The problem is that I do not necessarily know the data types of each column coming in, perhaps until a user tells the application, which might not occur until after the data is loaded. Also, I cannot anticipate the number of columns coming in. What would table design look like?
Would you use a large table with enough columns (e.g. Column1, Column2, etc.) reasonable enough to accomodate all the columns that the source might have (32?), and use nchar as the datatype with the plan to convert/cast when I use the data? Isn't the cast kind of expensive?
Does this make sense? Surely other foplks have run into this....
My thanks!
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Sep 13, 2015
i need to change the production database structures with multi language Support , datatype from VARCHAR to NVARCHAR in all SQL Objects SQL Objects: Tables, Functions, Stored Procedures...Some of production Tables with 15 Croces records with 10 indexes.how to change the entire databases through SQL scripting
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Jan 28, 2015
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] .....
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Apr 24, 2008
Good afternoon,
I have an issue with an ssis variable datatype.
The scenario is as follows:
I have a stored procedure:
PROCEDURE [dbo].[sp_newTransaction]
@sourceSystem varchar(50),
@txOut NUMERIC(18,0) OUTPUT
AS
insert into scn_transaction (sourceSystemName) values(@sourceSystem);
SELECT @txOut = @@identity
Whose purpose is to perform an insert into a table and return me the identity value of the inserted record, which I'll then use throughout the rest of my package. The identity column in the inserted table is numeric(18,0).
I execute the stored proc with the following sql with an OLE DB connection manager:
exec sp_newTransaction ?, ?
The first parameter is a string variable from earlier in the package, and the second is the output parameter. I have the following parameter mappings to the execute sql task:
User:ystxId output numeric 1 -1
User:ourceSys input varchar 0 -1
The proc is correctly called, and the row insesrted, however I get a type conversion error when SSIS attempts to map the return parameter to my package variable... I've tried all sorts of combonations, and can't seem to get it to execute.
At one point I wasn't returning a numeric, but rather an int from the stored proc, and all was well until I went to use the variable in a derived column later in the package, and the type was converted quite incorrectly (a 1 was 77799789080 or some such), indicating a type conversion error likely related to the encoding of the number.
I'd like to keep the datatypes as numeric and make ssis use those - any pointers are greatly appreciated as to what type my package variable should be to allow proper assignment of a sql server numeric type to it.
Thanks much,
B
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Sep 17, 2003
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.
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Mar 14, 2008
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.
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Dec 15, 2005
HI,I have a table with IDENTITY column with the datatype as INTEGER. Nowthis table record count is almost reaching its limt. that is totalrecord count is almost near to 2^31-1. It will reach the limit with inanother one or two months.In order to avoid the arithmentic overflow error 8115, we would likechange the datatype from INT to BIGINT. we hope this will solve ourproblem.How do I approch this datatype conversion?. Since the data count ishuge, that leads to a long down time of database.we need better approach or solution for this problem?. kindly give mea better solution that will reduce the total downtime of the productiondatabase.?.Regards
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Feb 25, 2008
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
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May 13, 2015
I have a scenario like below
Product1
Product2 Product3
Product4 Product5
Product1 1
1 0 0
1
Product2 1
1 0 0
1
Product3 0
0 1 1
0
Product4 0
0 1 1
0
Product5 1
1 0 0
1
How to design tables in SQL Server for the above.
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Feb 13, 2002
Ok, I'm doing a football database for fixtures and stuff. The problem I am having is that in a fixture, there is both a home, and an away team. The tables as a result are something like this:
-------
Fixture
-------
fix_id
fix_date
fix_played
----
Team
----
tem_id
tem_name
-----------
TeamFixture
-----------
fix_id
tem_id
homeorawayteam
goals
It's not exactly like that, but you get the point. The question is, can I do a fixture query which results in one record per fixture, showing both teams details. The first in a hometeam field and the second in an away team field.
Fixture contains the details about the fixture like date and fixture id and has it been played
Team contains team info like team id, name, associated graphic
TeamFixture is the table which links the fixture to it's home and away team.
TeamFixture exists to prevent a many to many type relationship.
Make sense? Sorry if this turns out to be really easy, just can't get my head around it at the mo!
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Aug 18, 2015
I would like to create a table called product. My objective is to get list of packages available for each product in data grid view column while selecting each product. Each product may have different packages type (eg:- Nos, CTN, OTR etc). Some product may have two packages and some for 3 packages etc. Quantity in each packages also may be differ ( for eg:- for some CTN may contain 12 nos or in other case 8 nos etc). Prices for each packages also will be different that also need to show. How to design the table..
Product name :
Nestle milk |
Rainbow milk
packages :
CTN,OTR, NOs |
CTN, NOs
Price:
50,20,5 |
40,6
(Remarks for your reference):CTN=10nos, OTR=4 nos
| CTN=8 Nos
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Jan 26, 2006
I have a USERS database table with a column called IsValidated. It identifies if a user has been validated.
I'd like to know which datatype would be the most efficient for this column.
Our DBA made it a varchar(1) column. Would using int be better?
Please advice.
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May 14, 2006
I have a message box or multiline textbox on my form and I am storing into an SQL DB. I currently have it as a VARCHAR, but that doesn't seem to store the carriage returns. Do I have to store them as a nvarchar, text, ntext or something else to make the returns show? I am pulling them out of the DB and showing them in a label where I replace the with a <br>.
tempMessage = Dr("Message")
message.Text = tempMessage.Replace("", "<br />")
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Nov 23, 1998
Is there a datatype that I can use to store a 64 bit unsigned int? I'm using SQL 6.5. Was thinking of using the standaed Interger datatype.
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Oct 18, 2004
I am trying to convert a NVCHAR datatype to a DATETIME data type is that possible???
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Nov 16, 2005
lakshmi writes "i want to store more than 8000 chars in varchar field.what can i do?"
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Oct 19, 2006
Hello Harish,
The data type is a varchar(10)
The Loan Number looks something like this:
254009411
Thanks,
Kurt
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Feb 12, 2007
fathima writes "what data type is used to store unlimited content in sql server.
Actually i need to store a text book
pls reply i need it for a proejct work."
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Feb 28, 2007
what date type is bet used when there is some occaions the user may enter 2.5 etc
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Aug 22, 2007
i have a field in table x withe datatype bit.
if i store say value 64. it will store it as 1. then if i store another no. say 43 and so on.
then how do i retireve those values from table. say i want ot retrieve 64 the how will sql recoginze i want to retireve 64 as it is stored as 1 in the datafield
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Jul 23, 2005
Over the years I have always used the decimal(18,0) as the datatype forprimary keys. Aside from the number of significant numbers involved,would BigInt type be better for performance or is decimal(18,0) still okay.--Don VaillancourtDirector of Software DevelopmentWEB IMPACT INC.phone: 416-815-2000 ext. 245fax: 416-815-2001email: Join Bytes! <mailto:donv@webimpact.com>web: http://www.web-impact.comWeb Impact Inc. <http://www.web-impact.com>This email message is intended only for the addressee(s) and containsinformation that may be confidential and/or copyright.If you are not the intended recipient please notify the sender by replyemail and immediately delete this email.Use, disclosure or reproduction of this email by anyone other than theintended recipient(s) is strictly prohibited. No representation is madethat this email or any attachments are free of viruses. Virus scanningis recommended and is the responsibility of the recipient.
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Jul 23, 2005
I am using Visual Studio .NET 2003 with SQL Server 2000. I am trying toinsert the date and time into a SQL database by using hour(now). I amhaving a hard time trying to figure out which datatype to use in SQL tostore this value. I have tried using datetime, char, nchar, text andnothing seems to work. Anyone have any ideas? Thanks!Regards, :)Christopher Bowen
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Sep 13, 2005
hello,i m having a problem with the sql database.it does not accept 0(zero)asthe first number in the integer field.whenever i insert 01 it takes itas 1.similarly for 02 and so on till 09.i want 01. can anyone suggesthow to get.i m doing this on sql server.does sql server support?is thisthe problem of sql server?
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May 17, 2006
hello !I got some problems here. I have an attribute that determines the unitof something,e.g. the size of using "mm" , the length of using "seconds"and something others may using "n-page", so ,which data type should Iuse. the "nvarchar" or others?thank you very much!*** Sent via Developersdex http://www.developersdex.com ***
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May 27, 2007
Hi,
Supposed the variable @number calculated and resulted as 0.75. I declared it as a FLOAT but it keeps giving me '0'.
Set @number = 6/8
I get the zero result. What datatype should I use for the correct result ?
Thanks,
Dror.
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May 20, 2008
Hi guys
What are alpha values and what datatype stores them.
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Aug 30, 2006
Hi,Sorry if this isn't the right forum...I'm getting a "System.ArgumentException: Column requires a valid DataType" on the following line of code: dcUserAnswer.DataType = System.Type.GetType("SqlTypes.SqlInt32") I'm using SQL Server 2003 & ASP.NET 1.1 Thanks,Jens
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Sep 14, 2006
Hi Everyone, In C# file: bool abc; (it is working)But in sql file: (bool is not working. What datatype should use for bool in the sql file?)CREATE TABLE sb_payment_history ( sb_dispensing bool NULL <================ not working because bool is not known. )GOThanks,May
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Dec 28, 2006
Please i need to display the money column in DataBase in an asp.net page but i get something like this 786.0000 how can i format it so that i get something like 786.00
Thanx
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Apr 5, 2007
Hi,I created a table with one column being that of an 'image' data type. The problem is I don't know how to insert an image into that column. Pleas Help.
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Mar 21, 2004
Can someone tell me how to store word file or other format files in sqlserver 2000?
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May 7, 2004
This is probably an easy one.
How can I update a column with a datatype of int to be empty? Everything I tried updates the field with a zero. I need to empty out the value (equivalent to string type update of null).
Jason
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