Hi all,
I come from MySQL.
In sqlserverce
I'm looking for an equivalent command..to
"DROP INDEX IF EXISTS inventory.idxItems"
or somthing similar so that I do not get an error or crash the C# app when I try to drop a nonexisting index..
also for droping a table.
I'm trying to drop indexes if they already exist then recreate them as needed, however, I'm getting an error if the index does not exist and I thought that's what the "IF Exists" statement was for.
syntax:
IF EXISTS (SELECT name FROM sysindexes WHERE name = 'idx_acct_no') DROP INDEX accounts.idx_acct_no
go
create index [idx_acct_no] ON [dbo].[accounts] ([acct_no])
go
Error when index does not exist:
Server: Msg 3703, Level 11, State 7, Line 1
Cannot drop the index 'accounts.idx_acct_no', because it does not exist in the system catalog.
Is there anyway to not get this error?
i am using vb.net and ms sql server 2005 express.....what is the syntax for dropping a table if existsi have used this but it says incorrect syntax near if Dim cmda As New SqlCommand("drop table " + test + " if exists", New SqlConnection(strdb)) cmda.Connection.Open() cmda.ExecuteNonQuery() cmda.Connection.Close()any solutions???? plz only answer in vb.net and sql server express
View 8 Replies View Relatedin mysql i can drop a table or db if it currently exists using
drop table if exists [table1] or
drop database if exists [db1]
is there an equalivant in ms sql
thanks
how can I drop a propcedure or a view without error for MS SQL 2000/2500
for a table
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[myTABLE]') AND type in (N'U'))
DROP TABLE [dbo].[myTABLE]
and for a procedure
IF EXISTS ???
DROP PROCEDURE [dbo].[SP_myTABLE_Count]
thank you for helping
I need to drop a table if exist ?? how can i do that ??
thanx !
Hello,Using Enterprise Manager, I deleted from my database the only tablethat contained records (Right-Click on Table, Choose "Delete Table").My expectation was that the LARGE .mdf file would be reduced to minimalsize (at least as small as the Northwind MDF). However, it's still 4+Gig in size!! (Northwind is 2.62 MB). This is a problem, bc I deletedthe table in order to recapture hard drive space.NOTE: I already tried using Shrink Database in EM. This significantlyreduced the size of the .mdf file from its original (i.e. pre-delete)size of 38 Gig to present size of 4 Gig.What can I do to further reduce the size of the MDF file?Thank you.
View 1 Replies View RelatedWhat is the best way to drop a temp table if it exists? I am looking something similar to this: if exists (select top 1 * from #TableName) then drop #TableName else end
View 5 Replies View RelatedI am trying to create an index in Enterprise Manager, but I am getting this message:
Index 'IX_CreatedBy_User' already exists.
The Help says:
An index already exists for table '<0s>' with the columns '<1s>'.
This index does _not_ exist in the table to which I am adding it, at least according to EM. In an attempt to view indexes as stored, I ran 'select * from sysindexkeys' in Query Analyzer, but I don't know how to read the 93 rows that it returns. I don't see any of the labels I assigned.
I have 37 tables and each has a uniqueidentifier-type field named 'GID_CreatedBy_User'.
I deleted all indexes named 'IX_CreatedBy_User' in all files. Then I was able to add the index to 2 tables, but I received the same error in the 3rd table.
I experienced the same problem earlier while adding indexes on another field, which is varchar(4) type. I started getting this message after creating that index in about 20 tables.
Is this an EM bug? Any help will be appreciated.
Hi,
I'm trying to run a script to add an index to a table. The index might already exist so I want to drop it 1st if it does.
Is there an equivalent to the following that I use for tables for indexes?
if exists (select * from sysobjects where id = object_id('dbo.tblFred') and sysstat & 0xf = 3)
drop table dbo.tblFred
Thanks,
Martin
How can I test if a table already has a specific index present?
Id normally test for an object with: if object_ID('My Object') is null then...
What technique works with an index? Or can you use the object_Id function, how do you reference the index?
Many thanks.
Here is my code,
1. create table t1 (id int )
2. create unique index u on t1(id)
3. create table t2 (id int constraint f foreign key references t1(id))
4. ALTER TABLE t2 NOCHECK CONSTRAINT ALL
5. ALTER TABLE t1 NOCHECK CONSTRAINT ALL
6. drop index t1.u
I get a FK voilation exception. on line 6.
I was not expecting this, because I am doing 4 & 5
Is dropping the FK is only option?
Actually I am trying to move the unique index to a different file group.
------------------------
I think, therefore I am - Rene Descartes
Hi,
I am trying to drop an index usiong enterprise manager.The process hangs and Enterprise manager is not responding.When I checked the Current activity the process is in sleeping condition.I appreciate if any one can tell me what could be the reason for the process to be hung.
thanks
Mohan
Hi,
I have a table which I am unable to drop the index.
I tried to drop it via the TSQL and GUI interface (Indexes dialog box),
but when I clicked on table refresh, the index still there.
Below is the result after DBCC commands:
1. DBCC checktable(TB_LOCLoan)
Checking TB_LOCLoan
The total number of data pages in this table is 146542.
Table has 1596232 data rows.
Msg 605, Level 21, State 1
Attempt to fetch logical page 462136 in database 'DM_LOCLoan' belongs to object '1744009244',
not to object 'TB_LOCLoan'.
2. DBCC newalloc(DM_LOCLoan)
TABLE: TB_LOCLoan OBJID = 832005995
INDID=0 FIRST=60168 ROOT=642778 DPAGES=146542 SORT=0
Data level: 0. 146542 Data Pages in 18393 extents.
INDID=5 FIRST=463752 ROOT=463739 DPAGES=5304 SORT=1
Msg 2525, Level 16, State 1
Table Corrupt: Object id wrong; tables: alloc page 463616 extent id=463752 l page#=463752
objid in ext=-832005995 (name = -832005995) objid in page=832005995 (name = TB_LOCLoan)
objid in sysindexes=832005995 (name = TB_LOCLoan)
TOTAL # of extents = 18393
3. From Error Msg 2525, I have tried the suggested action
use DM_LOCLoan
go
select indid, name, object_name(id)
from sysindexes
where id=832005995
and distribution=463752
go
This query does not return any row.
I am running out of clue of how to proceed! Anybody come across this problem before?
I am very eager to solve this problem as the table is hanging here, I can't even drop it to recreate
and continue data loading.
Thank you.
Regards,
Joo Pheng
According to sysindexes, I have a table with a primary key and an index. I'd like to drop the index. However, when I give the drop command, the message "Cannot drop the index 'eventlog._INDEX', because it does not exist in the system catalog." is returned.
I'm not sure what to look for. How do I remove the index?
Hi, all,
I want to re-create an index on a production table.
I got an error 644 "could not find index entry...".
The DBCC CHECKDB and CHECKTABLE gave me this:
Server: Msg 8928, Level 16, State 1, Line 1
Object ID 37575172, index ID 6: Page (1:939782) could not be processed. See other errors for details.
Server: Msg 8939, Level 16, State 1, Line 1
Table error: Object ID 37575172, index ID 6, page (1:939782). Test (*(((int*) &m_reservedB) + i) == 0) failed. Values are 7 and 36.
DBCC results for 'Mfg_DFSFNSF'.
There are 1142314 rows in 326143 pages for object 'Mfg_DFSFNSF'.
CHECKTABLE found 0 allocation errors and 2 consistency errors in table 'Mfg_DFSFNSF' (object ID 37575172).
The table script for the index is like this:
CREATE UNIQUE INDEX [Mfg_ITMDH_MbrIdx] ON [dbo].[Mfg_DFSFNSF]([_ITMDH_OwnRow], [_ITMDH_MbrKey], [RECTYPE]) WITH FILLFACTOR = 70 ON [PRIMARY]
My question is that can I drop it and run above create it to fix the problem in live mode?
I know the other option will be:
DBCC CHECKTABLE (FSDBMR.dbo.Mfg_DFSFNSF, repair_allow_data_loss)
But that has to put the db under single user mode.
Thanks!
If I rebuild the clustered index using this option (Drop Existing) without specifying the Fill Factor, would it it retain the original Fill Factor?
Thank you
I am executing
DROP INDEX [IX_Users] ON [Users]
and i get a syntax error
what is the exact syntax to DROP an INDEX for MS SQL 2000
thank you
Is there anyway to drop an index at the partition level in SQL 2005 ?There is a way to rebuild at the partition level (assuming this creates)i.e.: alter index ALL on dbo.LP_CQ rebuild partition = 229 ;I want to:1. Drop index(es) at partition level (partitioned by period value (1..400)).2. bulk copy data in (can be 1 or more periods per day).3. Rebuild at Partition level.Thx
View 1 Replies View RelatedI just tried to backup a database I recently deployed to to SQL Server 2005 box, and got the following error:
The backup of full-text catalog 'myCatalog' is not permitted because it is not online. Check errorlog file for the reason that full-text catalog became offline and bring it online.
Or BACKUP can be performed by using the FILEGROUP or FILE clauses to restrict the selection to include only online data.
I don't need the index so I tried to drop it with both:
DROP fulltext catalog 'myCatalog'
and
DROP catalog 'myCatalog'
but both give me a syntax error.
How can I get rid of this index so I can backup my database?
Thanks,
Tristan
SQL SERVER 2000System let's you alter the system tables and add indexes. However, it won'tlet you drop the index afterward.Anybody know how to drop an index on a system table?Thanks,Kevin
View 4 Replies View RelatedI have a non-clustered index on a table. If I rebuild or reorganize it in SQL 2005, the total fragmentation percent reported by properties/fragmentation on the index stays at 33%.
Why doesn't the fragmentation go to 0% ?
If I totally drop/create the index, starts even higher, but beorg or rebuild simply goes to 33%. This even if using with use temp db for sort option.
I need a way to push create index statements drop to the subscribers. If I can use replication to distribute index creation that would be great. We don't allow our clients to make any schema changes directly. We are using transaction and merge replication.
View 4 Replies View Relatedhello everyone,we dropped the clustered & nonclustered indeces on a table, thenrebuilt them. logical fragmentation is near zero, but extentfragmentation is about 40%. how can this be if the indeces are brandnew?
View 2 Replies View RelatedWe are running MS RS and SQL Server 2000 SP3.
We have one LEDGER, where all the daily activities are stored. The LEDGER table has 4 indexes (1 clustered and 3 non-clustered). To get AR we use this table.
Well problem is some times in 1-2 months, any simple AR query takes a long time and every other client gets slow response (queries are very slow or sometimes block).
If we DROP any index on LEDGER table and again put it back (RECREATE), all our queries work fine and faster. This goes on till 1-2 months, till we see the same issue again.
This is a classic case happened today. Queries were running fine till morning 8 AM. We upload some 50 thousand records to Ledger table (Data Conversion). Well after 30 mins, all simple AR queries started taking a long time. We DROPPED an index in LEDGER table and everything was faster....Just to be same we added back the same index again.......everything is Faster.....
What is this. ....is it our QUERY, index or huge Transactions or no free space ???
We are scheduled to run SP4, next week. But is there any solution in the mean time on what is this?
Also is they any way to KILL all SQL server processes that take more than a mins. We just don't want ALL our client to Slow down because of one query????
Thanks,
After the incremental process and full process, SSAS doesn't drop the index files #.xxx.fact.map and #.xxx.fact.map.hdr in the file.0.dim folder. We now have all the versions from 3 to 5000 sitting in the folder. The DBA team only found this when the disk is running out of space recently.
We've already check the account running the SSAS has local admin to the server.
Is there any config setting that might cause this issue? If not, what could it be causing this issue.
What is the impact on the users to drop an index on a table while in use? I will recreate the index afterwards. The table is used constantly by a three of processes/users at all times.
View 3 Replies View RelatedI am new to mssql server. There is a table on one of my databases that occupies a lot of space. And the space usage is as follows: (all values in KB)
reserved: 42329064
data: 16272288
index: 26050032
unused: 6744
This table takes up almost 80% of my database size, and the information is this table just captures the time spent by a user on the website(not very critical data)
I would like to know how to delete the entire index (which is what is occupying most space) to free up disk space. the index is a clustered index.
Hi,I found this SQL in the news group to drop indexs in a table. I need ascript that will drop all indexes in all user tables of a givendatabase:DECLARE @indexName NVARCHAR(128)DECLARE @dropIndexSql NVARCHAR(4000)DECLARE tableIndexes CURSOR FORSELECT name FROM sysindexesWHERE id = OBJECT_ID(N'F_BI_Registration_Tracking_Summary')AND indid 0AND indid < 255AND INDEXPROPERTY(id, name, 'IsStatistics') = 0OPEN tableIndexesFETCH NEXT FROM tableIndexes INTO @indexNameWHILE @@fetch_status = 0BEGINSET @dropIndexSql = N' DROP INDEXF_BI_Registration_Tracking_Summary.' + @indexNameEXEC sp_executesql @dropIndexSqlFETCH NEXT FROM tableIndexes INTO @indexNameENDCLOSE tableIndexesDEALLOCATE tableIndexesTIARob
View 2 Replies View Relatedplease 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
Hi,
This is on Sybase but I'm guessing that the same situation would happen on SQL Server. (Please confirm if you know).
I'm looking at these new databases and I'm seeing code similar to this all over the place:
if not exists (select 1 from dbo.t1 where f1 = @p1)
begin
select @errno = @errno | 1
end
There's a unique clustered in dex on t1.f1.
The execution plan shows this for this statement:
FROM TABLE
dbo.t1
EXISTS TABLE : nested iteration.
Table Scan.
Forward scan.
Positioning at start of table.
It's not using my index!!!!!
It seems to be the case with EXISTS statements. Can anybody confirm?
I also hinted to use the index but it still didn't use it.
If the existence check really doesn't use the index, what's a good code alternative to this check?
I did this and it's working great but I wonder if there's a better alternative. I don't really like doing the SET ROWCOUNT 1 and then SET ROWCOUNT 0 thing. SELECT TOP 1 won't work on Sybase, :-(.
SET ROWCOUNT 1
SELECT @cnt = (SELECT 1 FROM dbo.t1 (index ix01)
WHERE f1 = @p1
)
SET ROWCOUNT 0
Appreciate your help.
I am using Full Text Index to index emails stored in BLOB column in a table. Index process parses stored emails, and, if there is one or more files attached to the email these documents get indexed too. In result when I'm querying the full text index for a word or phrase I am getting reference to the email containing the word of phrase if interest if the word was used in the email body OR if it was used in any document attached to the email.
How to distinguish in a Full Text query that the result came from an embedded document rather than from "main" document? Or if that's not possible how to disable indexing of embedded documents?
My goal is either to give a user an option if he or she wants to search emails (email bodies only) OR emails AND documents attached to them, or at least clearly indicate in the returned result the real source where the word or phrase has been found.
Dear All.
We had Teradata 4700 SMP. We have moved data from TD to MS_SQL SERVER 2003. records are 19.65 Millions.
table is >> Order_Dtl
Columns are:-
Client_ID varchar 10
Order_ID varchar 50
Order_Sub_ID decimal
.....
...
..
.
Pk is (ClientID+OrderId+OrderSubID)
Web Base application or PDA devices use to initiate the order from all over the country. The issue is this table is not Partioned but good HP with 30 GB RAM is installed. this is main table that receive 18,0000 hits or more. All brokers and users are using this table to see the status of their order.
The always search by OrderID, or ClientID or order_SubNo, or enter any two like (Client_ID+Order_Sub_ID) or any combination.
Query takes to much time when ever server receive more querys. some orther indexes are also created on the same table like (OrderDate, OrdCreate Date and Status)
My Question are:-
Q1. IF Person "A" query to DB on Client_ID, then what Index will use ? (If any one do Query on any two combination like Client_ID+Order_ID, So what index will be uesd.? How does MS-SQL SERVER deal with these kind of issues.?
Q2. If i create 3 more indexes on ClientID, ORderID and OrdersubID. will this improve the performance of query.if person "A" search record on orderNo so what index will be used. (Mind it their would be 3 seprate indexes for Each PK columns) and composite-Clustered index is also available.?
Q3. I want to check what indexes has been used? on what search?
Q4. How can i check what table was populated when, or last date of update (DML)?
My Limitation is i Dont Create a Partioned table. I dont have permission to do it.
In Teradata we had more than 4 tb record of CRM data with no issue. i am not new baby in db line but not expert in sql server 2003.
I am thank u to all who read or reply.
Arshad
Manager Database
Esoulconsultancy.com
(Teradata Master)
10g OCP