Data Access :: How To Get Column Datatype Using Namespace
Jan 2, 2013
which is to parse a create table script using Microsoft.SqlServer.TransactSql.ScriptDom namespace..I get a list of statements : StatementList SQLStatement = parser.ParseStatementList(StreamReader, out errors);then I cast a relevant statement to the CreateTableStatement type which gives me access to the ColumnDefinition class.
foreach (TSqlStatement T in SQLStatement.Statements)
{ if (T is CreateTableStatement) { CreateTableStatement TC= (CreateTableStatement)T}}
with foreach (ColumnDefinition CD in TC.Definition.ColumnDefinitions)
I am ready to loop through the columns so far so good. I can get to the column name using CD.ColumnIdetifier.Value, to the data type using CD.DataType.Name.BaseIdentifier.Value, but can't seem to get to the length definition. Meaning, I can get column1 , varchar; but I need column1, varchar(40). where do I get (40) from?I tried using ScriptTokenStream under C.DataType, but it seems to iterate through all tokens not just ones relevant to that fragment.
Hi, I have created a .net class library and i include the namespace : using System.Data.SqlServer but when i build my .net class library i get the folowing error: The type or namespace name 'SqlServer' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)
Aaarrgghhhhhhh, still searchin' for a nice step-by-step article to learn data access (all insert delete update commands) with the SQL Server .NET Data Provider found in [System.Data.SqlClient] namespace....
After I learned the XML Schemas Collection, Using XML Data and 5 XML data type methods : query(), valuse(), exist(), modify(), and node(), I just started to do XQuery by using the Microsoft XQuery Language Reference - SQL Server 2012 Books Online and Handling Namespaces in XQuery of [URL]. I copied the following code:
-- Handlimng Namespace in Xquery (Page 6 of XQuery Languge Reference & Examples of msdn library)
-- Example A. Declaring a namespace
-- saved as MicrosoftXQueryPage6 in C:DocumentsXquery-SQLServer2012
-- 4 Aug 2015 10:55 AM
SELECT Instructions.query(' declare namespace AWMI="http://schemas.microsoft.com/sqlserver/2004/07/adventure-works/ProductModelManuInstructions"; /AWMI:root/AWMI:Location[1]/AWMI:step ') as Result FROM Production.ProductModel WHERE ProductModelID=7
I executed the code in my Microsoft SQL Server 2012 Management Studio (SSMS2012). It worked nicely.
<AWMI:step xmlns:AWMI="http://schemas.microsoft.com/sqlserver/2004/07/adventure-works/ProductModelManuInstructions"> Insert <AWMI:material>aluminum sheet MS-2341</AWMI:material> into the <AWMI:tool>T-85A framing tool</AWMI:tool>. </AWMI:step> <AWMI:step xmlns:AWMI="http://schemas.microsoft.com/sqlserver/2004/07/adventure-works/ProductModelManuInstructions">
[code]....
But, I don't know what AWMI means and what the results of SELECT Instructions.query(' declare namespace... are.
The query fails to execute and returns an error: String[1]: the Size property has an invalid size of 0. If I change the SqlDbType.Text parameter type to SqlDBType.Varchar, 100 (or any other fixed varchar length), it works but limits the length my unlimited field text. Any suggestions on how I can use db type text or varchar(max)? The field I need to retrieve is string characters of unlimited length and hence the datatype varchar(max).
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!
We need to insert data/rows from a SQL Server 2014 database into MS Access database. The problem is, there are so many columns (100+) in the table and there are so many insert transactions of this kind (from different tables) that it is not very easy to write the code in VB.NET that lists all column names.
Both the Access and SQL Server tables have the same number of columns and the equivalent data types, so inserting is not really the problem. It's just that is there a way to do an insert statement in T-SQL that does not name all the columns?
HELLO i have an sql server database, with a table an some columns. how can i get the data type of each column and the lengh define in the database table?
SELECT MAX(TIME_VAL) AS Duration1 , MIN(TIME_VAL) AS Duration2 , -- VALUE OF LATITUDE CORRSPONDING TO MAX(TIME_VAL) -- VALUE OF LATITUDE CORRSPONDING TO MIN(TIME_VAL) (Select LONGITUDE from (select LONGITUDE , row_number()
[Code] ....
I am not getting Correct values for StartLongitude , EndLongitude. How can i achieve this to get the val of latitude corssponding to max/ min of time_val column.
I am using SQL select query to select MIN from column data but I have 12 columns and want to select MIN of all these 6 columns in one SQL select statement.
I have written as SELECT MIN(temp_sv,humidity_sv,SH1,SH2,SH3,SH4) from production but its not working... How to do this....
I have table contains more columns and first column have ID int not null primary key and auto increment by 1 seed by 1 the ID 165000 record and instant Jump to 166000 and increment by 1 ...
Does anyone know what datatype I could use to store a large amount of text? I just started using sql two days ago and still trying to become familar with it. Took me a whole day to set up a damn trusted connection.....newbie
hi, what would be the data type for entering the following information to a field . 2 3/4 or 1/2 .. ... Here what I want to do, I want to be able to enter such value into that field.
can someone point me to the differences in the datatypes between accessand sqlserver?I've writen a program that creates a table in access using an sql createquery. However, if I point to a sqlserver odbc datasource the querybombs
I have to do a lot of inporting from Access files. Is there a place where I can change the default datatype conversion for Access Text from nvarchar to varchar?
I want to convert strings from a textfile and convert em to appropriate datatype for the destination columns, eg if i have a source value in string 11111 and the destination column is MONEY. I want to use CONVERT(functionretruningdatatype,'11111') in my insert statement.
Hi, on a migration from access 97 to SQL Server 7.0 columns in access like 'hyperlink' are converted to datatype 'text' on the SQL Server 7.0. Now I miss the function in the access application I had before with fields like 'hyperlink'. Now I can't start e.g. a word document with a click and I have to type in the hyperlink manualy. Does anyone had the same problem an possibly have a resolve? Thanks.
I've changed the width of a column from 128 to 64. How to EM shows 64, while sysobjects and sp_help show 128 ?? Even after disconnecting and re-connecting (just to be extra sure).
I'm using this query to sum the values. The cost column is a float datatype and what could I differently do here to sum the cost. I'm unable to sum the cost.
Also is there any way I change the datatype to int for Cost column without losing the data.
select ID, MAX(Date) Date, SUM(Cost) Cost, MAX(Funding) Funding from Application group by ID
I have a data flow task where I have mutiple columns (of different data types) , I want to create a single column using all these columns in XML format and load it into a table with a column of datatype XML. Can I accomplish this using Derived column tranformation?
Hello,How do I change the datatype of a column in a CSV file. Preferably in the select statement (apparently Cast, Convert, & Replace functions don't work when selecting from a CSV). I have a page where users upload their CSV files to and then I use SQLBulkCopy to insert all the records into my sql table. The problem is with columns of money data. EX: "$2,000" >> 2000The CSV file interprets the "$2,000" as a string of text. How do I convert it to a decimal so I can insert it into my sql database?
Hi all A table consists of a column with name "Createddate" with datatype smalldatetime. defaultly iam binding getdate() to Createddateso it is storing in tthe below format -- Mar 12 2008 11:38AM while retreving iam mentioning... select * from tbl where convert(varchar,createddate,101) = '03/12/2008' it is showing no records ..even though records r there with --march 12 2008. plz do needful in this senario. thanks & regards kanth
Hi everyone.... I need a column in my table that its DataType should be as integer arrays how can I implemant it in my sqlserver table. Any help appreciated.
Is there any way or method to CHANGE the DATATYPE of a column in a published table being used for transactional replication (MSSQL 2000), WITHOUT DROPPING THE SUBSCRIPTION ????
Im stuck in this mess and do have the option to drop the subscription, alter the table, create the subscription and rerun the snapshot or to recreate it by Manual Synchronisation either.
Can anyone help? Has anyone been across this dilemma before and have troubleshooted the problem? If yes, help is much appreciated.
MY PROBLEM: ~~~~~~~~~~~~~ 'MyTable' is currently being published and has subscriptions to it. The PRIMARY KEY column 'id' has an Identity property as well. 'id' is of datatype smallint, however because of bad planning, i now need to change that datatype to an integer to support a larger range WITHOUT DROPPING SUBSCRIPTIONS. I CANT DROP THE COLUMN EITHER AS IT IS BEING THE PRIMARY KEY COLUMN.
IS THERE ANY OTHER WAY I CAN DO TO ARCHIEVE MY GOAL? THANKYOU.
How do we find the "column name" and "data type" of all the columns in a table. Assuming that I know the Table name or Table Object ID. I am using Microsoft SQL Server 2000.
I am trying to make the following update: All the columns are fine except for the 'name' column. datatype for 'name' column in the target table is varchar(30) and the datatype for 'name' in the sourcetable is varchar(40), I cannot change the datatype of the column 'name' to varchar(40) because I am told it may affect performance. what I want to do is just update the first 'name' column of the target table by the first 30 characters of the source table column 'name'
I am using the following query, is it possible to do it or are there any other ways I can update the column without changing the datatype?
MERGE INTO [S].[dbo].[AF_Copy] AS TargetTable USING (SELECT source_code, name, addr1, city, zip FROM [D].[D_TEST].[dbo].[SO_Copy]) AS SourceTable ON ([TargetTable].[Code] = [SourceTable].[source_code])
Hi, i am trying to load output of count(X) and sum(salesamt) into the same column. if iam using transformation data task what datatype should i be converting the two outputs to accomidate result as