I am setting up a database that will receive a lot of data from two
separate telephone centers, the log table will in a short time have
over 1 million lines, and I was wondering if I should use 1 identify
field or two:
case 1:
[Id] [int] IDENTITY (1, 1) NOT NULL
[ServerId] [int] NOT NULL
case 2:
[Id] [varchar(20)] IDENTITY NOT NULL
Where in case 1 I would just use a combination of Id and ServerId to
identify the line, where in case 2 I would have the Id field a varchar
that would look something like A-000001, A-000002 for server 1 and
B-000001, B-000002 for server 2
Which solution will be faster when searching for a record when the
will have over 1 million lines?
Hi all. I have been going round and round for the past 2 days on this and would appreciate any help. In a view select statement, I need to concat 2 varchar fields with a text field. If I CONVERT the TEXT field to VARCHAR, only the first 30 characters of the field appear in the result set. If I convert the VARCHAR fields to TEXT, I get an error that I cannot CONCAT TEXT fields. I'm not sure what to do. Can someone please offer some assistance? Thanks in advance! Steve
I have a table with a column that is currently a varchar(50), but I want to convert it into an int. When I try to just change the type in design mode I get an error that conversion cannot proceed. When I look at the field it appears some of the entries have special characters appended at the end, I see a box after the value.
How can I remove all speical characters and then convert that field to an int?
Also I tried the following query which did not work as well, same error about conversion.
I know there has to be a way to do this, but I've gone brain dead. Thescenario..a varchar field in a table contains a date range (i.e. June 1,2004 - June 15, 2004 or September 1, 2004 - September 30, 2004 or...). Theusers have decided thats a bad way to do this (!) so they want to split thatfield into two new fields. Everything before the space/dash ( -) goes intoa 'FromDate' field, everything after the dash/space goes into the 'ToDate'field. I've played around with STRING commands, but haven't stumbled on ityet. Any help at all would be appreciated! DTS?
What are some good strategic approaches to using freeform text fields fordata that needs to be queried? We have a product whose tables we can'tchange, and I need to count on a "description" field for storing a value.Two, actually. I'm thinking of adopting this convention:InvoiceNumber@VendorAcronymThere'd be a lot of vendors.Additional issue: sometimes these values would be referred to in thedescription field, and I'd need to distinguish them as referrals ratherthan as original recorded instances of the values. For that, I imaginedeither:InvoiceNumber@@VendorAcronymorInvoiceNumber&VendorAcronymInvoiceNumber//VendorAcronymetc. -- something like that.I'm just wondering if there's best practice for doing anything this stupid(hey, I'm stuck with this as our only option just now; hopefully it's onlytemporary). How to parse out whatever I end up implementing -- well, itneeds to be tractable.Thoughts?--Scott
I have a varchar field which holds IDs like (1, 3, 5, 19, 23) when I order it, i get it ordered in ASCII order like (1, 19, 23, 3, 5) rather than (1, 3, 5, 19, 23) Even if I convert it to int, I won't be able to order it.
is there any way I can order a varchar field numerically?
Hi, I'm starting a new application in java using JTDS jdbc driver(http://jtds.sourceforge.net) and SQLServer 2005 Express.I have to design the database from scratch and my doubt is if I have to usevarchar or nvarchar fields to store string data.Any experience about performance issues using nvarchar instead of varchar(considering that Java internally works in unicode too)?Thanks in advance,Davide.
I've two tables that I've made from some query subsets. Each table has a varchar field with notes/memos and I want to concatenate the fields into one long field.
The problem I'm running into is that when I run the query to check the concatenation, the field is truncated maybe 256 chars in.
I tried converting and casting the field as nvarchar 4000, and I've also done the same for the fields in the two tables, but that doesn't seem to help.
I can query for the fields from each table and none of them are truncated by themselves. It only happens after I concatenate them.
I've created a new table and inserted the results into it, but the field in it is also truncated.
1. Copy old data from each table in LiveDB to same table in ArchiveDB. 2. Delete the data from each table in LiveDB which is in ArchiveDB
Both DBs SIMPLE recovery mode.
Each table has a clustered PK on a single int value. In both DBs
The tables with varchar(max) columns are taking a v.long time to copy over.
IS there anything I can change in the ArchiveDB to make it run faster.
It is the insert that is taking the time. I've tried dropping the clustered PKs in ArchiveDB tables and then rebuilding afterwards but it has not made any difference. After all I am adding data to the ArchiveDB in clustered index order, so wouldn't have expected it to.
How I can change the Archive DB but cannot touch the schema/settings of Live DB.
I'm using SSIS to import data from a table (SQL) containing varchar fields. The problem is, that those varchar fields are changing over time (sometimes shrinking and sometimes expanding). I.e. from varchar(16) to varchar(20).
When I create my SSIS package, the package seem to store information about the length of each source-field. At runtime, if the field-length is larger then what the package expects an error is thown.
Is there anyway around this problem?
Oh, yeah... My destination fields are a lot wider then the source fields, so the problem is not that the varchar values doesn't fit in my destination table, but that the package expects the source to be smaller...
I have 2 varchar fields on MS 2005 table First field is date and format is 080118(YYMMDD) and second is salary field like 00002000(positive) and 00002000- (negative) how can I move them to date and numeric fields on another table....
Hi, I'm trying to improve performance for a db that stores messages. The message is currently stored in an ntext field, but when I look at all the records from the past 3 months, I found that 88% are less than 1000 characters, and 97% are less than 3000 characters. I don't want to actually limit the message size, but it seems like I might get much better performance using a varchar(3000) field to hold most of the messages, and a separate text field just used for those 3% that really are long. Is this a good idea? If so, is it better to put the Message and LongMessage fields in the same table; or, have a separate table to hold the long messages? If it is in a separate table, it would need to be left joined with the message table each time messages are retrieved.Also -- I am getting about 700 new messages daily, and right now have over 150,000 messages stored. The vast majority of activity involves new messages. Is this a good situation to look at using horizontal partitioning?Thanks for any help, I don't really have anyone to discuss this with and it is really helpful to get some other views!!
Hi, i'm new to SSIS and trying to import some csv files (comma delimited) into SQL Server. A NULL value for a CHAR column is correctly regonized as NULl in SQL Server, but a NULL value for of a mapping to a VARCHAR column in SQL Server is not recognized correctly and i get the value "'NULL'" in SQL Server (including the single comma.
Sample:
CSV file contains columns A and B. A and B contains the Text NULL. Column A is mapped to a CHAR field, and column B is mapped to a VARCHAR field in SQL Server. After the import, SQL has the following value: A = NULL as NULL, B 'NULL' as text.
I am currently working on a PHP based website that needs to be able to drawfrom Oracle, MS SQL Server, MySQL and given time and demand other RDBMS. Itook a lot of time and care creating a flexible and solid wrapper and amdeep into coding. The only problem is a noticed VARCHAR fields being drawnfrom SQL Server 2000 are being truncated to 255 characters.I searched around php.net and found the following :Note to Win32 Users: Due to a limitation in the underlying API used by PHP(MS DbLib C API), the length of VARCHAR fields is limited to 255. If youneed to store more data, use a TEXT field instead.(http://www.php.net/manual/en/functi...ield-length.php)The only problem with this advice is Text fields seem to be limited to 16characters in length, and I am having similar results in terms of truncationwith other character based fields that can store more than 255 characters.I am using PHP 4.3.3 running on IIS using the php_mssql.dll extensions andthe functions referenced here http://www.php.net/manual/en/ref.mssql.php.What are my options here? Has anybody worked around this or am I missingsomething obvious?James
Hi guys I need immediate help with a query that I am trying to write. I want to sum the values in a query but the field has a type of varchar and it has decimal numbers too. So if I do the query something like that, that converts the field to int, I get the error message. I tried converting it into real or float but I get error message on that too. I need help with adding the calculatedValues and getting there sum. I would appreciate any help with that.
Thanks -Sarah Select SUM(Convert(int, calculatedValue)) from monitor.dbo.monHistory where LocalTimeWithoutDst > '8/26/06' and LocalTimeWithoutDst < '8/28/06'
This is the error message I recieve: Conversion failed when converting the varchar value '274.2' to data type int.
After reading Dan Guzman's blog entry (http://weblogs.sqlteam.com/dang/archive/2008/02/21/Dont-Bloat-Proc-Cache-with-Parameters.aspx) I started modifying some of my code to try it out and ran into a stumbling block. What size would you specific for a varchar(MAX) field? Since a varchar max field can hold up to 2 billion chracters I really don't think I need to specify 2 billion as the size. Anyone have any ideas?
I have a varchar column which containd comma delimited values like Rec# Fruits 1 Apple, Peach, Strawberry 2 Orange, Mango 3 Banana, Grape ...........
Now i have to add search facility so that a user could search for more than 1 fruit at a time. I have a Stored Procedure which returns records from this table. that SP has a Parameter @SearchFruit Varchar(500) and the user could pass in values like 'Apple, Mango' to this parameter.
Now how should i write the SQL so that i get back the records Rec# 1 & 2 since apple is there in 1st record and mango is there in the 2nd ??
I know if a put the comma delimited values as individual records in a temporary table and also do the same for the parameter values then i can get the desired results. But i want to avoid doing that. Any other way ?
I would like to append information to a varchar field with an update statement, for example the field currently contains a name (Mark) and I would like to add information to name for business purposes, to update it to Markqw215, is this possible to do with an update statement? Thank you.
I would like to append information to a varchar field with an update statement, for example the field currently contains a name (Mark) and I would like to add information to name for business purposes, to update it to Markqw215, is this possible to do with an update statement? Thank you.
I'm importing data from a text file into SQL as a varchar, and I'm leaving it a varchar in its final destination table. It is essentially a price, i.e., $25.65. I'm using this price field (varchar) to perform a calculation...
Everything seems to work OK, but I'm not sure about using this varchar field to perform this calculation. Is this doable, or should it absolutely be converted to say, decimal?
I need to insert data in a varchar column to that when its displayed new lines will appear in the text, that is the field will hold text with multiple lines...
Hi,I am using MSDE together with Enterprise Manager.I have a table with a field named description.This field will be filled by a web forms's textbox web control.The textbox's maxsize attribute is set to "3000" characters.What size do I have to adjust for my DB field description?Is the size of 3000 in Enterpise Manager equal to 3000 characters for the textbox?I am just trying to avoid errors if MSDE cuts off the string that comes from the textbox webcontrol.
I am trying to load a field in my DB and it is defined as varchar(11) but when I populate it, it still adds spaces at the end. When I try to use it in an If statement, it doesn't match and executes the else instead. The wierd part is it seems to make it 10 characters long and not 11 or the the actual length. I think I had originally set it up for char(10) then changed it afterward but I even deleted the field and reentered it as varchar(11).Thanks,Eric
I have a field with State and Zip (ie; CA94526) which is a varchar field. I have lots of data that is invalid and need SELECT all records that the right(myfield,5) IS NOT Numeric. Can this be done?
I am trying to change a text field into a varchar 8000. I get his error message when trying to convert.
Unable to modify table. ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]Cannot create a row of size 8317 which is greater than the allowable maximum of 8060. [Microsoft][ODBC SQL Server Driver][SQL Server]The statement has been terminated.
Anyone know of a way to either truncate the text field or to select only those that are over the 8000 character mark?
I have to change a due_date field with a varchar(10) to a datetime. I created a new table with datetime but when I imported data into the table it errored out due to the datatype. A varchar(10) going into a datetime(8).
Is there way to resolve this without losing data?. or how do you result this problem?.
