Seek In A SQL Table From Access
Dec 20, 2006
I have an MS Access 2003 database from which I want to seek a specific record in a SQL Server Express 2005 database. I can connect to the table and get a recordcount but the recordset.supports (adseek) and recordset.Supports(adIndex) both return false. Any suggestions? Specific code I'm using is as follows:
Dim cnxn As ADODB.Connection
Dim strCnxn As String
Set cnxn = New ADODB.Connection
cnxn.Provider = "sqloledb"
strCnxn = "Data Source=SERVERSQLEXPRESS2005;Initial Catalog=RAMPSQL;Integrated Security='SSPI';"
cnxn.Open strCnxn
Set rsWSC = New ADODB.Recordset
rsWSC.CursorLocation = adUseServer
strSQL = "DailyData"
rsWSC.Open strSQL, cnxn, adOpenKeyset, adLockReadOnly, adCmdTableDirect
Thank you!
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Nov 30, 2006
Hi
I have a frontend Access and backend SQL
works fine but when i in my customer table seek in name
it takes very very long time . I use ODBC to my connection
is there anayway to this better.?
regards
alvin
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May 18, 2006
Hello I want to seek and find the table named NewCustomer from the database so what would be the query ?
F16 LĂ?GHTĂ?NĂ?NNNG
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Dec 13, 2007
Hi All,
The script below may be use to find out what stored procedure uses a specified column from any of the table. This could be helpful in cases you have change a field name of a table and want to find out what stored procedure uses that column.
create procedure seek_sp_for_columns
@colname_para varchar(500)
as
begin
create table #temp_t
(
textcol varchar(1000)
)
create table #temp_t2
(
procname varchar(500)
)
declare @procname as varchar(500)
declare @found as int
declare @colname as varchar(500)
declare @valid_colname as int
select @valid_colname = count(id)
from syscolumns
where name = @colname_para
if (@valid_colname > 1)
begin
set @colname = '%' + @colname_para + '%'
declare sp_cursor cursor
for select name
from sysobjects
where xtype = 'P'
open sp_cursor
fetch next from sp_cursor
into @procname
while @@fetch_status = 0
begin
insert into #temp_t
exec sp_helptext @procname
set @found = 0
select @found = count(textcol)
from #temp_t
where textcol like @colname
if (@found > 0)
begin
insert #temp_t2 values(@procname)
end
delete #temp_t
fetch next from sp_cursor
into @procname
end
close sp_cursor
deallocate sp_cursor
select *
from #temp_t2
drop table #temp_t
drop table #temp_t2
end
else
begin
select 'Please verify column name'
end
end
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Jul 23, 2005
From what I've read in the docs, ado.net currently supports opening sqlserver ce tables in table-direct mode and performing Seek operations on them(using SqlCeDataReader), but not on the full-blown sql server. Is this(will this be) still true with ado.net 2.0 & sql server 2005?
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Sep 19, 2015
I've been having some trouble getting a single-column "varchar(5)" field to reliably use a table seek instead of a table scan. The production table in this case contains 25 million rows. As impressive as it is to scan 25 million rows in 35 seconds, the query should run much faster.
Here's a partial table description:
CREATE TABLE [dbo].[Summaries_MO]
(
[SummaryId] [int] IDENTITY(1,1) NOT NULL,
[zipcode] [char](5) COLLATE Latin1_General_100_BIN2 NOT NULL,
[Golf] [bit] NULL,
[Homeowner] [bit] NULL,
[Code] .....
Typically, this table is accessed with a query that includes:
SELECT ...
FROM SummaryTable
WHERE ixZIP IN (SELECT ZipCode FROM @ZipCodesForMO)
This query insists on using a table scan. I've tried WITH (FORCESEEK) for example, but that just makes the query fail.
As I've investigated this issue I also tried:
SELECT * FROM Summaries WHERE ZipCode IN ('xxxxx', 'xxxxx', 'xxxxx')
When I run this query with 64 or fewer (actual, valid) ZIP codes, the query uses a table seek.But when I give it 65 or more ZIP codes it uses a table scan.
To summarize, the production query always uses a table scan, and when I specify 65 or more ZIP codes the query also uses a table scan. I'm wondering if the data type of the indexed column (Latin1_General_100_BIN2) is somehow the problem. I'll likely try converting the ZIP codes to an integer to see what happens.
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Jul 30, 2007
Dear All,
I'm working in eVC++3.0 with SQL CE2.0.
I've developed the application to fetch the data from the mdf file by passing the index field and using the command IRowsetIndex()::Seek.
Consider TableExample with Columns A,B,C,D and index Index1 with column A and Index2 with column B,C,D.
Its working fine when index1 is passed for the indexvalue.But when i pass index2 of the same table,its throwing the error as BADINDEX.
I'm passing the correct keyvalues in the Seek command also.
Kindly help me in this regard.
Regards,
Sasi.
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May 7, 2008
Hi,
Can I use index seek and still keep 'like' 'or' functionality for the following statement?
--prepare test table
create table entity (Id int identity(1,1), FamName varchar(200), LastName varchar(200))
go
create clustered index entity_id on entity (id)
go
create nonclustered index entity_lastName on entity (lastName)
go
insert into entity select famName,FirstName from table
--test index
declare @LastName varchar(10)
set @LastName = 'a'
select FamName
from entity
where @LastName is null or LastName like @LastName --clustered index scan
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Nov 4, 2002
I have created a nolock view off a table to prevent locks. I have users coming in through MS Access that have switched their queries to run against the views. Now we are noticing that queries that used to run as a clustered index seek against the table are running as a clustered index scan against the table and performance in the queries has dropped.
Is there any way that the same query that hits the view instead of the table can be made to run faster or at least use the index seek?
Thanks,
Steve
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Oct 4, 2007
Hi,
I am reading the book by Steven Roman:
"Access Database : Design and Programming" 3rd edition.
On page 120, Figure 7-2, he showed the the structure of the Jet Database Engine, which is very confusing to me.
According to this picture, I come to such an understanding:
1) VBA is just the hosting language for the Jet Database Engine;
2) Microsoft Visual Basic, Excel, Access, Word are hosting languages for VBA.
Isn't this weird? VB hosts VBA?
Thanks for any input!
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Jun 21, 2004
create table t1(a varchar(50) , b varchar(50))
create index i1 on t1(a)
create index i2 on t1(b)
create view v1
as
select * from t1 where isnull(a,b) = 'test'
select * from v1
The above SQL "select * from v1" is doing a table scan.
What do I do to make it perform an index seek ????
TIA
- ForXLDB
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May 11, 2006
I am getting error 0x80040E25 when I try to call seek after update on a Recordset opened as (adOpenStatic, adLockOptimistic, adCmdTableDirect)
9 - (13.250) - <2> - *** error in .DbRecordset.cpp, line 908
10 - (13.250) - <2> - ADO_ERRORS FOR pRs = 200a420, seek, err=-2147217883(80040e25)
11 - (13.250) - <2> - ADO_ERROR: E R R O R 1 of 1.
12 - (13.250) - <2> - ADO_ERROR: DESCRIPTION: All HROWs must be released before new ones can be obtained. [,,,,,].
13 - (13.250) - <2> - ADO_ERROR: NUMBER: 80040E25
14 - (13.250) - <2> - ADO_ERROR: NATIVE_ERROR: 0
15 - (13.250) - <2> - ADO_ERROR: SOURCE: Microsoft SQL Server 2005 Mobile Edition OLE DB Provider
I registered SQL Mobile 3.0 dlls using regsvr32.exe so now I can connect to SQLCE3.0 databases on desktop using plain ADO with such connection string _T("Provider=Microsoft.SQLSERVER.MOBILE.OLEDB.3.0; Data Source=") + name of the file
I have not asked this question before as it did not make sense -> there was no official SQLCE3.0 support on desktop. Now, since SQL CE is promiced to be supported on desktop as SQL/E I decided to ask.
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Oct 4, 2007
Hey,
what is the difference between Table Scan und Index Scan?
I find no difitions in the internet
Finchen
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Sep 21, 2007
Hi,
I want to know wht is a
TABLE SCAN
INDEX SCAN
INDEX SEEKand When they are used, Wht is the difference between all these.????
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Dec 10, 2006
If you display the execution plan and run the following:SET STATISTICS IO ONgoSELECT ProductID, SupplierIDFROM ProductsWHERE SupplierID = 1I don't understand how come there is noBookmark Lookup operation happening to get theProductID?I only see an Index Seek happening on SupplierID.There is no composite index SupplierID + ProductIDso what am I not understanding here?Thank you
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Mar 17, 2008
Access Connection
create a new Connection Manager by right-clicking in the Connection Managers section of the design area of the screen. Select New OLE DB Connection to bring up the Configure OLE DB Connection Manager dialog box. Click New to open the Connection Manager. In the Provider drop-down list, choose the Microsoft Jet 4.0 OLE DB Provider and click OK.
Browse to the Access database file and connection set up---all good!!!
Dataflow task
Add an OLE DB Source component
Double-click the icon to open the OLE DB Source Editor. Set the OLE DB Connection Manager property to the Connection Manager that I created . Select Table from the Data Access Mode drop-down list.
I cannot see the tables set up as set up as pass-through table types to a Oracle 9i db
Any ideas please help
thanks in advance
Dave
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Jan 12, 2000
Hi Everyone,
I have set up a link from ACCESS to a SQL 7.0 database using ODBC (File DSN saved on a shared DRIVE). The link works well only from the workstation where the link was created. But How can I create a link so a group of users can view the linked table in ACCESS without type a password? Any suggestion is appreciated.
Lunjun
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Nov 29, 2006
Is there a way to specify a MS Access table (or query object) in the select query of SQL Server.
Ex.:
MSAccessTable (in file.mdb)
col1
col2
a1
a2
b1
b2
SQL query in SQL Server:
SELECT col1, col2 into SqlTable from [file.mdb].MSAccessTable;
Thanks,
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Feb 16, 2007
Hi all,
Hopefully I am posting this question in the correct forum. I am still learning about SQL 2005. Here is my issue. I have an access db that I archive weekly into and SQL server table. I have used the dst wizard to create an import job and initally that worked fine. field I have as the primary key in the access db cannot be the primary key in the sql table since I archive weekly and that primary key field will be imported several time over. I overcame this initally by not having a primary key in the sql table. This table is strictly for reference. However, now I need to setup a unique field for each of the records in the sql table. What I have done so far is create a recordID field in the sql table that is an int and set as yes to Identify (auotnumber). That worked great and created unique id for all existing records. The problem now is on the import. When I try to import the access table i am getting an error because of the extra field in the sql table, and the error is saying cannot import null value into this field. So... my final question is how can I import the access table into the sql table with one extra field which is the autonumber unique field? Thanks a bunch for any asistance.
Bill
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Jun 18, 2004
Strange one here - I am posting this in both SQL Server and Access forums
Access is telling me it can't append any of the records due to a key violation.
The query:
INSERT INTO dbo_Colors ( NameColorID, Application, Red, Green, Blue )
SELECT Colors_Access.NameColorID, Colors_Access.Application, Colors_Access.Red, Colors_Access.Green, Colors_Access.Blue
FROM Colors_Access;
Colors_Access is linked from another MDB and dbo_Colors is linked from SQL Server 2000.
There are no indexes or foreign contraints on the SQL table. I have no relationships on the dbo_ table in my MDB. The query works if I append to another Access table. The datatypes all match between the two tables though the dbo_ tables has two additional fields not refrenced in the query.
I can manually append the records using cut and paste with no problems.
I have tried re-linking the tables.
Any ideas?
Thanks,
Brad
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Dec 14, 2007
hi all,
is there any query to move certain data from a sql data to access table through query. i am having a requirement where i have to fetch the records from a sql table that falls within a specified range to a ms access table. is this possible through a query.
thanks
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Oct 20, 2006
please explain the differences btween this logical & phisicall operations that we can see therir graphical icons in execution plan tab in Management Studio
thank you in advance
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Mar 1, 2004
I have a really strange problem.
I execute this query:
declare @cid int
set @cid = 2003227
select * from sales s, product p where p.product_Id = s.product_Id and customer_id = @cid
select * from sales s, product p where p.product_Id = s.product_Id and customer_id = @cid or @cid = 0
3 Million rows in sales, 120000 in product.
The first does and index seek, the second an index scan.
The execution plan reports that the scan takes 99.87% of the cost, and the seek takes 0.13%
This problem obviously gets worse the bigger the dataset / query /etc.
The reason I query this, is because it never used to take this long to do index scans. Is there something i can change, something i can fix?
Any help would be appreciated.
Josh
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Nov 14, 2006
the query:
SELECT a.AssetGuid, a.Name, a.LocationGuid
FROM Asset a WHERE a.AssociationGuid IN (
SELECT ada.DataAssociationGuid FROM AssociationDataAssociation ada
WHERE ada.AssociationGuid = '568B40AD-5133-4237-9F3C-F8EA9D472662')
takes 30-60 seconds to run on my machine, due to a clustered index scan on our an index on asset [about half a million rows]. For this particular association less than 50 rows are returned.
expanding the inner select into a list of guids the query runs instantly:
SELECT a.AssetGuid, a.Name, a.LocationGuid
FROM Asset a WHERE a.AssociationGuid IN (
'0F9C1654-9FAC-45FC-9997-5EBDAD21A4B4',
'52C616C0-C4C5-45F4-B691-7FA83462CA34',
'C95A6669-D6D1-460A-BC2F-C0F6756A234D')
It runs instantly because of doing a clustered index seek [on the same index as the previous query] instead of a scan. The index in question IX_Asset_AssociationGuid is a nonclustered index on Asset.AssociationGuid.
The tables involved:
Asset, represents an asset. Primary key is AssetGuid, there is an index/FK on Asset.AssociationGuid. The asset table has 28 columns or so...
Association, kind of like a place, associations exist in a tree where one association can contain any number of child associations. Each association has a ParentAssociationGuid pointing to its parent. Only leaf associations contain assets.
AssociationDataAssociation, a table consisting of two columns, AssociationGuid, DataAssociationGuid. This is a table used to quickly find leaf associations [DataAssociationGuid] beneath a particular association [AssociationGuid]. In the above case the inner select () returns 3 rows.
I'd include .sqlplan files or screenshots, but I don't see a way to attach them.
I understand I can specify to use the index manually [and this also runs instantly], but for such a simple query it is peculiar it is necesscary. This is the query with the index specified manually:
SELECT a.AssetGuid, a.Name, a.LocationGuid
FROM Asset a WITH (INDEX (IX_Asset_AssociationGuid)) WHERE
a.AssociationGuid IN (
SELECT ada.DataAssociationGuid FROM AssociationDataAssociation ada
WHERE ada.AssociationGuid = '568B40AD-5133-4237-9F3C-F8EA9D472662')
To repeat/clarify my question, why might this not be doing a clustered index seek with the first query?
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Sep 28, 2005
Our env: SQL*Server on win2k server.
Question is: I have table1 in first db and I would like to access this table in second db. In oracle, we create db links to achieve the same. How do we achieve the same in SQL Sever?
Any help is greatly appreciated.
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Jul 20, 2005
Another question about SQL Server tables and access grants.I've created an user 'user1' as Access account, ad also as db_owner of aselected database.Then, I've created a table as user1.table1.When I try to access the data of the table, with the account name of user1,I must specify the owner ('select * from user1.table1') even if I've loggedas user1 (I need to access the data just with 'select * from table1').What's the problem?Thank youFederica
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Jan 30, 2008
Hi
Iam using c# windows application.
I have a database like DemoData . It contains some tables?
I want to allow the updations and editions for the fields of table1 in DemoData into Outlook calendar.
My process is.....
1. I want to access the Outlook2003 Calendar fields like Subject,Location,StartTime ,EndTime and Contacts and Categories etc and to place them with the DemoData table1 fields using C# windows Application.
Letus assume the Table1 contains the columns as..
Subject,Address,Stime,Etime, Contact and Cate
2. same as the above question i want to access the Tasks in Outlook2003 with another table fields.
so if we want to work like this what we have to do?
Please give me suggestions...
Thanks and Regards,
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Jun 25, 2006
I am trying to access the fields in a table using Visual Basic in Web Developer .NET
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Dec 13, 2006
I have some junk tables in my database, but I am not sure if they are really not in use. Does sql server log the last time that a table gets accessed? when I say access I mean any actions toward the table, including select, update, insert, etc.thanks in advance.
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Jun 28, 2007
Hi All,
I have to to do SQL Query a table which is placed in different server than my current SQLServer.Please guide me to perform this task.
Thanx,Karthik.A
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Jul 24, 2005
Hi:
I have a UDF that splits a string based on a delimiter.The UDF returns a table of records:1- ID2- ValueThe string I am sending to split is:'2-4-07:00 AM-08:30 AM'I am splitting on '-'What I get back is a table of 4 rows.I want to get each value, convert it to the right data type, then assign it to its own variable.How can I get each row alone manually? Can I? Without using Cursors?if I do a "select * from Split(@myData,'-')", then I cannot retrieve each field alone,Thank you.
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Jun 5, 2001
My problem is that I can't query a couple of tables. I created them using DTS myself, in a db called contracts, and called one of them 010425. I've logged in as SA, and making sure the correct DB is shown in Query Analyser.
Here's the query...and very simple it is;
SELECT TOP 10 * FROM [dbo].[010425]
I just keep getting the following error message;
Server: Msg 208, Level 16, State 1, Line 1 Invalid object name 'dbo.010425'.
But it shows up in Sysobjects and EM!
I can query the system tables, using EXACTLY the same syntax...no problem there.
I've got SQL Server 7 running on W98. Everything is happening locally.
Any ideas what I'm doing wrong, people?
Thanks in advance for your help,
Jaishel
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Aug 13, 2001
Hi all,
I'm writing a procedure that require to access a table from a different database but from the same server. Can the procedure able to read this table. If so how should my procedure use that table?
Thank you for all your help.
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