Data Access :: Retrieve Schema Information Of Columns Of Tables
Sep 10, 2015
Till recently we were using the following code to retreive schema information of columns of tables
Dim schemaTable = connection.GetOleDbSchemaTable( _
System.Data.OleDb.OleDbSchemaGuid.Columns, _
New Object() {Nothing, Nothing, tableName, Nothing})
Now instead of getting the name of table (which i was using as param for filtering) i'm going to receive a sql-query. Now my question is if I were to get a query like the following :
SELECT
[EmployeeID],
[Title] + ' ' + [LastName] + ' ' + [FirstName] AS FullName,
[BirthDate],
[Address],
[City] + ', ' + [Region] + ', ' + [Country] + ' - ' + [PostalCode] AS FullAddress
FROM [dbo].[Employees]
Then how can I retrieve the schema information of only the columns present in the query.
(Its possible that i might get a query with multiple tables with joints)...
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May 4, 2007
Hi,
I am working on inserting information into a DB and then retrieving the ID created for that Data to use elsewhere in my code. I have the code below but I do not know how to get toOutput parameter. Can anyone please help?
CREATE PROCEDURE dbo.InsertProduction
@DATEOUT datetime(8),
@DATEREQUIRED datetime(8),
@PREPAREDBY varchar,
@COMMENTID INteger,
@TOTALQUANTITY INteger,
@VENDORID INteger,
@WPO varchar,
@TCAPONUMBER INteger,
@APPROVEDBY varchar,
@Identity int OUT
AS
INSERT INTO PRODUCTION (DATEOUT,DATEREQUIRED, PREPAREDBY, COMMENTID, TOTALQUANTITY, VENDORID, WPO, TCAPONUMBER, APPROVEDBY) VALUES( @DATEOUT, @DATEREQUIRED, @PREPAREDBY, @COMMENTID, @TOTALQUANTITY, @VENDORID, @WPO, @TCAPONUMBER, @APPROVEDBY)
SET @Identity = SCOPE_IDENTITY()
'collect all the information from the form and then apply all and then update
'Get a reference to the Production table.
Dim dtProduction As DataTable = DS.Tables("Production")
Dim dtLineItem As DataTable = DS.Tables("LineItems")
' Create the SqlCommand to execute the stored procedure.
Production.InsertCommand = New SqlCommand("dbo.InsertProduction", connection)
Production.InsertCommand.CommandType = CommandType.StoredProcedure
' Add the parameter for the CategoryName. Specifying the
' ParameterDirection for an input parameter is not required.
'Production.InsertCommand.Parameters.Add("@CategoryName", SqlDbType.NVarChar, 15, "CategoryName")
Production.InsertCommand.Parameters.Add("@DATEOUT", SqlDbType.DateTime, 8, "CategoryName")
Production.InsertCommand.Parameters.Add("@DATEREQUIRED", SqlDbType.DateTime, 8, "CategoryName")
Production.InsertCommand.Parameters.Add("@PREPAREDBY", SqlDbType.VarChar, 50, "CategoryName")
Production.InsertCommand.Parameters.Add("@COMMENTID", SqlDbType.Int, 4, "CategoryName")
Production.InsertCommand.Parameters.Add("@TOTALQUANTITY", SqlDbType.Int, 4, "CategoryName")
Production.InsertCommand.Parameters.Add("@VENDORID", SqlDbType.Int, 4, "CategoryName")
Production.InsertCommand.Parameters.Add("@WPO", SqlDbType.VarChar, 50, "CategoryName")
Production.InsertCommand.Parameters.Add("@TCAPONUMBER", SqlDbType.Int, 4, "CategoryName")
Production.InsertCommand.Parameters.Add("@APPROVEDBY", SqlDbType.VarChar, 50, "CategoryName")
' Add the SqlParameter to retrieve the new identity value.
' Specify the ParameterDirection as Output.
Dim parameter As SqlParameter = Production.InsertCommand.Parameters.Add("@Identity", SqlDbType.Int, 0, "ProductionID")
parameter.Direction = ParameterDirection.Output
' Create a new row with the same schema.
Dim dr As DataRow = dtProduction.NewRow()
'you need the ID from this to insert into the Production DB
' Set the value of all the columns.
dr("DateOut") = CDate(DateTimePicker1.Text)
dr("DateRequired") = CDate(DateTimePicker2.Text)
dr("VendorID") = CInt(vendorbox.SelectedValue)
dr("HomeAddress") = txtApproved.Text.ToString
dr("ApprovedBy") = txtPrepared.Text.ToString
dr("TCAPO") = CInt(txtTCAPO.Text.Trim)
dr("CommentID") = CommentID
dr("TotalCost") = CDec(txtTotals.Text)
dr("TotalQuantity") = CInt(txtQtyTotal.Text)
' Add to the Rows collection or table .
dtProduction.Rows.Add(dr)
'Update the Production Table and then retrieve the ID created in this case
Production.Update(dtProduction)
Dollarjunkie
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Jul 7, 2006
Hi,
I am trying to set up a data flow task. The source is "SQL Command" which is
a stored procedure. The proc has a few temp tables that it outputs the final
resultset from. When I hit preview in the ole db source editor, I see the
right output. When I select the "Columns" tab on the right, the "Available
External Column List" is empty. Why don't the column names appear? What is
the work around to get the column mappings to work b/w source and
destination in this scenario.
In DTS previously, you could "fool" the package by first compiling the
stored procedure with hardcoded column names and dummy values, creating and
saving the package and finally changing the procedure back to the actual
output. As long as the columns remained the same, all would work.
Thats not working for me in SSIS.
Thanks in advance.
Asim.
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Apr 6, 2008
Hi guys,
Working on a MS Access database, I have a table named "myTable" which contains several fields.
I just want to retrieve all the fields (columns) in the myTable, without retrieving Col1 and Col2
What should my SQL string be?
SELECT * (not Col1, Col2) FROM myTable
Thanks in advance for any help.
Aldo.
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May 16, 2008
I have two tables that have no relation. However, both have a column which has a field of nvarchar(50) that I want to retrieve together in one operation and bind to a DropDownList in a sorted fashion. So, what I'm trying to achieve is this:
1. SELECT name FROM table1
2. SELECT name FROM table2
3. Join the two results together and order them alphabetically
4. Return the result set
I'm not sure how to do this or even if it's possible. Ideally I'm hoping it can be done in a stored proc.
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Sep 22, 2015
I'm trying to re-write my database to de-couple the interface (MS Access) from the SQL Backend. As a result, I'm going to write a number of Stored Procedures to replace the MS Access code. My first attempt worked on a small sample, however, trying to move this on to a real table hasn't worked (I've amended the SP and code to try and get it to work on 2 fields, rather than the full 20 plus).It works in SQL Management console (supply a Client ID, it returns all the client details), but does not return anything (recordset closed) when trying to access via VBA code.The Stored procedure is:-
USE [VMSProd]
GO
/****** Object: StoredProcedure [Clients].[vms_Get_Specified_Client] Script Date: 22/09/2015 16:29:59 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
[code]....
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Oct 24, 2005
Hi
Sorry if i am posting in the wrong section but i can't find a forum for MS Access.
Does Access know of a equivelent to SQL Servers INFORMATION_SCHEMA tables?
I am writing a application that needs to extract information from a access database like, table names, relationships etc..
Please note that i need to do this via SQL.
Thanks Wayne
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Oct 11, 2006
Hello
in my database I have schema "x". I have user "x" who is database owner, The user has schema "x" as default schema and is owner of this schema.
Now there are tables "x.mytable"
If I connect to the db as "x" and try
select * from mytable
I get an error "Invalid object name", I have to write it this way
select * from x.mytable
Why?
Thank you
Eckard
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Jan 19, 2012
I am using Query Writer (should be SQL 2005) and have included the following code.
The end result: -should retrieve columns and display the count for two different data sources that were added by personnel in a specific department.
Problem: results are returned but not accurate. The code below works just fine and returns the results for all spot buy orders added by personnel in the sales department. However, I want to add a column in the same report that also counts blanket orders from the exact same table added by personnel in the sales department. The database uses views (v) in lieu of dbo.
Parameters:
@Add_Date_From SMALLDATETIME='',
@Add_Date_To SMALLDATETIME='',
@Last_name VARCHAR(50)='',
@First_Name VARCHAR(50)=''
Query:
SELECT
T1.Last_name,
T1.First_name,
T2.Position,
T3.Add_date,
COUNT(T4.PO_Type) AS 'Spot Buy Added'
[Code] ....
If I substitute COUNT(T4.PO_Type) AS 'Spot Buy Added' with COUNT(T4.PO_Type) AS 'Blanket Added' I also get accurate results for the blanket order. IE separately they work just fine. If I try to combine the two that is where the trouble begins.
What am I doing incorrectly when I try to add the criteria/code for the additional column to count the blanket orders?
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Aug 30, 2007
Good morning,
I have a table that I am including in replication. However, I do NOT want the data for one of its columns to be included in the replication. Meaning, I want all of the schema and all of the data EXCEPT for a single column.
How do I do this?
I have searched the forum for some ideas, but did not find any.
Thanks in advance...
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Apr 26, 2006
palli writes "how to retrieve data from two tables..."
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Jan 25, 2008
I need to retrieve data from 2 tables (I have a sp that populates each table) regardless if they have a match or not.
First table:
#JobListTable
job_date datetime,
job_number char(15),
job_phase char(15),
qty_delivered decimal(8,2)
Second table:
#EquentialJobListTable
job_date datetime,
job_number char(15),
job_phase char(15),
qty_received decimal(8,2)
There could be a match between the two tables, or a record could exist in one and not in the other. Result will be loaded into a DataSet and dataGrig
Can I use a join?
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Sep 11, 2015
Is it possible to get data-type,default-value, etc. (basically schema information) of columns in a particular query.This is something similar to what we get when we execute the following
SELECT *
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'Employees'
But instead of TABLE_NAME i would like to give a query like
SELECT [EmployeeID],[LastName],[FirstName] from [dbo].[Employees] order by [EmployeeID].
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Apr 18, 2008
Hi,
I have a table 'TEMP' which owns by user 'SCOTT'.
I logined using the user 'SCOTT' and try to fetch the data without specifying schema name.
select * from TEMP.
Msg 208, Level 16, State 1, Line 1
Invalid object name 'TEMP'.
I getting the above error.
while i execting with schema name.
select * from scott.TEMP.
I getting the required output.
Is it possible to fetch the data without specifying schema name??
Plz help me.
The owner of the table TEMP is scott.
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May 28, 2007
Hey,
I want retrieve data from 3 table my tables structure is this
tblUsers
U_ID - Name
3 John
tblGroups
G_ID - Name
5 Admins
6 Moderators
Now I want join some of the users to different groups for example John maby is a member of two groups (Admins and Moderators)
in order to do this I created a new table names tblGroupsUsers
tblGroupsUsers
ID - User_ID - Group_ID
1 3 5
1 3 6
its ok, but Now I don't know how to retrive my users list from database I don't know how to write a wuery for this
I have tried this :
strSQL = "SELECT tblUsers.name, tblUsers.U_ID, tblGroups.G_ID, tblGroupsUsers.Group_ID, tblGroupsUsers.User_ID FROM tblUsers INNER JOIN tblGroupsUsers ON tblGroupsUsers.User_ID = tblUsers.U_ID, tblGroups WHERE tblGroupsUsers.Group_ID = tblGroups.G_ID ORDER BY tblUsers.name ASC;"
Its working withut error but the problem is the results its like this
John
John
its will retrive the username twice , I think its reading based on tblGroupsUsers table because it has two rows ,
help please I need this how can I configure my query to get eache name once
Thanks
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Sep 20, 2006
I am taking my first stab at a 3 tier architecture within ASP.Net. I have been adding datasets and creating a new Insert to add certain parts to a table. I am trying to add a date field called 'DateAdded' and is setup in SQL as a DateTime. When Visual Studio auto created the dataset, the Insert function is not "DateAdded as Datetime" as I would have expected, but it is "DateAdded as System.Nullable(Of Date)". There is a space in between 'Of' and 'Date'. If I keep the space in there the insert function shows an error that says "Arguement not specified for parameter DateAdded of funtion( etc. etc.). If I take the space out, the error on the insert function goes away but there is an error within the "OfDate" that says "Array bound cannot appear in type specifiers". I am confused on why the date format changed and how I can get a date to go into the database using the autogenerated datasets from Visual Studio. Any help would be appreciated. Thanks, Mike
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Jul 20, 2005
Dear list,I am trying to get the names of the tables and the column names from thecode below for a database but it is not working. When I run the querybelow the column titles are delivered but there is no data. I think thismight be a premissions issue. Has anyone run into this before?Thanks in advance.Use Test_db/* Provides Table Name, Column Name, Extened Description */Select a.name as tbl_name, b.name as column_name, d.name as data_type,d.length as length, d.xprec as prec, d.scale as scale, b.usertype,b.scale, c.valuefrom sysobjects as a inner join syscolumns as b on a.id=b.id inner joinsysproperties as c on b.colid=c.smallid and a.id=c.idinner join systypes as d on b.xtype=d.xtype
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May 11, 2006
I have a report and it retrieves information from an etl logging table which contains this info: etl_process_name, active_since_date, last_run_date.
When the packages are executing, the table cant be queried because it is in a transaction. Therefore the report keeps generating :s
The thing I want is that: If I query that table (with the report to show the logging table information) and the packages are executing, I want to see the values of the table before the transaction.
What I tried:
From sql management studio:
ALTER DATABASE MyDataBase
SET ALLOW_SNAPSHOT_ISOLATION ON
set transaction isolation level snapshot
go
SELECT etl_process, last_run, active_since FROM config.etl_settings
I did this while the packages were executing and it works but it won't work when I execute the same SELECT statement from the Dataset in the report. How is that possible? Does it have something to do with setting the database options for all users?
Additional info:
I'm database owner
The report solution has a shared datasource which refers to the same database
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Jan 28, 2004
Is there an information schema view that lists all the triggers?
Thanks in advance.
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Mar 31, 2008
If I had a bunch of paragraphs stored in a database field, is there a way, when displaying that data, that I can write instructions to only retrieve the very first paragraph?
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Jun 2, 2004
Hi, all..
I want to know the query to retrieve Column information that we can see from table Design view of Enterprise manager, such as Column name, Pk or not, FK table, Data Type, Null or not, Description(Specially Descrition).
Is there any sp for this or any query for this?
Thank you all...
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May 28, 2015
I am using C# in Visual Studio 2008 and remote database as sql server 2008 R2. I want to read remote database table's field value and i have to move that read value to string variable. how to do it.
And my code is :
string sql = "Select fldinput from tmessage_temp where fldTo=IDENT_CURRENT('tmessage_temp')";
SqlCommand exesql = new SqlCommand(sql, cn);
exesql.CommandType = CommandType.Text;
SqlDataReader rd1 = default(SqlDataReader);
rd1 = exesql.ExecuteReader();
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Sep 5, 2007
I know I've done this before and I can't find, and it's kinda of foggy here today...
anyone see anything with this
EXEC sp_addlinkedserver
'PAERSCBVD0045',
N'SQL Server'
Connect as X002548 since logins are on both serves
*/
-- Tables in 14 not in 45
SELECT S14.TABLE_NAME
FROM INFORMATION_SCHEMA.Tables S14
LEFT JOIN INFORMATION_SCHEMA.PAERSCBVD0045.dbo.MEP.Tables S45
ON S14.TABLE_SCHEMA = S45.TABLE_SCHEMA
AND S14.TABLE_NAME = S45.TABLE_NAME
WHERE S45.TABLE_SCHEMA = IS NULL
AND S45.TABLE_NAME = IS NULL
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Jan 19, 2004
hi all,
I have a duplicate stored procedure one has proper entries in the information_schema and the other with the same name has null entries in information schema meaning , the specific_schema and routine_schema entries are null and now it doesn't allow me to open the stored proc, neither it allows me to delete the proc.
while deleting it says" procedure_Name not found in the (NULL) collection.
any help will be highly appreciated.
REGARDS,
HARSHAL.
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Sep 6, 2007
Information Schema is the part of the SQL-92 standard which exposes the metadata of the database. I have written a small article that exposes the same. Let me know your comments on the same. http://aspalliance.com/1380_Information_Schema_and_SQL_Server_2005
Uday Denduluri
Software Engineer
Refer my articles at http://aspalliance.com/author.aspx?uId=62740
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Oct 31, 2005
Hello All,Could someone help provide a query that I can run todetermine the primary key and unique columns for anygiven table ?Thanks in Advance,Akintoye
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Aug 20, 2007
Hi, I'm getting this error
[Microsoft][ODBC SQL Server Driver][SQL Server]Could not retrieve replication information for table 735393739. Verify that the table has a primary key, and then rerun the Log Reader Agent.Please help me!
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Mar 15, 2014
I am more familiar with writing SQL for Oracle than MS SQL Server. Within Oracle there is a simple command, 'Describe', which actually shows the data types, and whether or not an attribute accepts NULLS. MS SQL Server does appear to support such a command, however I am looking for a way to describe the attributes of tables nonetheless.
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May 25, 2004
Hello,
I need to retrieve all the information about all the foreign key constraints,inorder to store them temporarily (to be deleted later)and then recreated after making the necessary modifications to the concerned tables.
The stored proc sp_helpconstraint shows all the constraint types, their user-defined or system-supplied name, the columns on which they have been defined, and the expression that defines them.But I don't know whether it can be manipulated to get what I want.I need to get it done programmatically..so that I can integrate it in my program which I'm building up progressively.
Any help or scripts would be appreciated!
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Feb 23, 2006
Hi All,
I am in process of transfering data from Sybase to Sql Server using SSIS 2005
have taken a Data Flow Task in Control Flow tab
In Data flow tab, I have taken one Ole DB Source and One OLe DB Destination
For the source, I am using Sybase Adaptive Server Anywhere Provider 8.0
For Destination, I am using Sql Server 2005 database
In Ole Db Source Editor ,
For OLe Db Connection Manager, I choose Sybase Connection
For Data access mode, I choose Table or View
For Name of the table or the view, I choose a table by name Table1( it lists all the tables from Sybase database)
When i click on preview button or Columns link, I get the following Error
Error at Data Flow Task [OLE DB Source [1]]: An OLE DB error has occurred. Error code: 0x80040E21.
Error at Data Flow Task [OLE DB Source [1]]: Unable to retrieve column information from the data source. Make sure your target table in the database is available.
------------------------------
ADDITIONAL INFORMATION:
Exception from HRESULT: 0xC020204A (Microsoft.SqlServer.DTSPipelineWrap)
Please help me out.
Thanks in Advance
Srinivas
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Aug 14, 2015
I'm looking to dynamically remove records from tables dynamically using the information schema within SQL Server. Looking to remove records from all the tables within a schema. I have gotten as far as generating the script dynamically then using a while exist clause to execute the delete statements.
DECLARE@TargetSchema varchar(100),
--@LibNameData varchar(100),
@fnameIndex varchar(100),
--@startOFR_SCR_FILENAME_DATE varchar(25),
[code]...
Would like to execute the statements generated by the results from the information schema.
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Jan 11, 2007
Hello, I am getting very frustrated! I have got a Foreach loop container which I am processing files within a folder. I have a flatfile connection manager which I have set up using a test file and have updated the expressions attribute to be the package variable I set up in the collection for the loop container however everytime I run it I get the error: 0xC0202094 cannot retrieve the column information from the flatfile connection manager. I can only guess that it is either the variable being passed to the connection manager or the way I set up the connection manager. When I msgbox the variable in a script component before the dataflow step, the variable for the file seems fine. Any suggestions are REALLY appreciated.
Yours
Jayne
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Jul 15, 2015
I've developed a package that is working well at development machine from VS 2013 for a sample flat file. Also, over development machine, I've deployed it to SSISDB catalogue and even from there also it is running well for the same file.When the same package is deployed to production server's SSISDB catalogue database, it throws following error while processing the same sample flat file, “Unable to retrieve column information from the flat file connection manager”
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