T-SQL (SS2K8) :: Create Index For A Specific Query That Is Used A Lot?
Jul 28, 2014
I am trying to create an index for a specific query that is used a lot.
Unfortunately I am keep getting a clustered index scan. (4.6 mil rows)
Googling "AND" and "OR" is tricky, but did lead met to many articles about filtered indexes.
None of which gave me a clear answer.
How can I make an index for this query?
Here's the code setup
------------------------------------------------------------------------------------------
-- Setup
------------------------------------------------------------------------------------------
IF OBJECT_ID('FilterTbl') IS NOT NULL
DROP TABLE FilterTbl
CREATE TABLE FilterTbl
(
SurroIDInt IDENTITY PRIMARY KEY,
CompIDSmallInt,
[code]....
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Dec 28, 2014
This is my table:
use tempdb
go
if object_id('Data', 'u') is not null drop table Data
go
with temp as (
select top 10000 row_number() over (order by c1.object_id) Id
from sys.columns c1 cross join sys.columns c2
[code]....
What index would be best for these three queries? With best I mean the execution time, I don't care about additional space.
This is the index I currently use:
create nonclustered index Ix_Data on Data (StateId, PalletId, BoxId, Id)
The execution plan is SELECT (0%) - Stream Aggregate (10%) - Index Scan (90%).
Can this be optimized (maybe to use Index Seek method)?
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Mar 23, 2015
I have data like below
Potter, James J
Williams, Ted R
Allen, Gary G
I want to remove Middle Name from the output
Potter, James
Williams, Ted
Allen, Gary
My Query:
SELECT
CASE WHEN CHARINDEX(' ', Supervisor, CHARINDEX(' ', Supervisor, 0) + 1) > 0 THEN
REPLACE(Supervisor, SUBSTRING(Supervisor, CHARINDEX(' ', Supervisor, CHARINDEX(' ', Supervisor, 0) + 1), LEN(Supervisor)), '')
ELSE Supervisor END AS NewSupervisor from data d
However, I stumble when Middle Name exists somewhere in the name as Replace function repalces every occurrence of the string. For ex: "Allen, Gary G" becomes "Allen,ary"
Do we have any way to say sql to replace after certain index?
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Mar 22, 2014
I would like to create an index with a few options but having issues trying to parse and run it successfully. The issue is near the end of the statement. Here's the create statement below:
-- Index PSAPSACTIVITYDEFN on table PSACTIVITYDEFN
IF EXISTS(SELECT 1
FROM sysindexes si
INNER JOIN sysobjects so
ON so.id = si.id
[code]....
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Sep 18, 2015
I need to build a CTE query to find for the same Cabstamp (document) where i have different Origin.
I know that i can build this with a correlated subquery, but i´am curious about using CTE.
I post sample create Script:
create table #temp (Cabstamp varchar(10), account varchar(10),document varchar(15), origin varchar(2), debit numeric(10,2), credit numeric(10,2), datalc datetime)
insert into #temp (Cabstamp,account,Document, origin, debit, credit, datalc)
select 'ADM12345',111,'CMP-01','FO',1000,0, '20150110'
union
select 'ADM12345',112,'CMP-01','FO', 500, 0,'20150110'
union
select 'ADM12345',6811,'CMP-01','DO',0,1500,'20150110'
union
[code]....
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Feb 7, 2012
I have a very large SQL Server table and want to pull all 50 columns that are in a certain row because something in that row has invalid varchar and is causing runtime errors. It is row 9054378701 and I am not sure how to create a query to pull that specific row and all 50 columns.
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Jan 30, 2015
I'm trying to write a function that will retrieve the last backup date/time of a particular database on a remote server (i.e. by querying msdb.dbo.backupset). Unfortunately, you can't use sp_executesql in a function, so I can't figure out a way to pass the server name to the query and still be able to return the datetime value back to the calling TSQL code (so that rules out using EXEC().
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Apr 29, 2015
I want to create index for hash table (#TEMPJOIN2) to reduce the update query run time. But I am getting "Warning!
The maximum key length is 900 bytes. The index 'R5IDX_TMP' has maximum length of 1013 bytes. For some combination of large values, the insert/update operation will fail". What is the right way to create index on temporary table.
Update query is running(without index) for 6 hours 30 minutes. My aim to reduce the run time by creating index.
And also I am not sure, whether creating index in more columns will create issue or not.
Attached the update query and index query.
CREATE NONCLUSTERED INDEX [R5IDX_TMP] ON #TEMPJOIN2
(
[PART] ASC,
[ORG] ASC,
[SPLRNAME] ASC,
[REPITEM] ASC,
[RFQ] ASC,
[Code] ....
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Dec 5, 2007
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
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Apr 3, 2014
I need to know /observe for a period like 10 days in a row HOW MANY TIMES a specific Stored Proc is executed on the server. How can I do that? is there a way to precisely know a number of such calls via DMVs?
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May 20, 2014
Give this data set;
declare @BO table (Col1 varchar(50), Col2 varchar(50))
insert into @BO values
('01','009920140516102116'),
('071710811019600001000005',''),
('070534524264000001000005',''),
('001806505517000001000005',''),
[Code] ....
select * from @BO
The 2 digit number that appears on line 1, 7 and 13 (only in this example) i need to have added to the begin of each value below it until the next 2 digit number is encountered. The desired result set would look like:
declare @BOD table (Col1 varchar(50), Col2 varchar(50), col3 varchar(50))
insert into @BOD values
('01','009920140516102116',''),
('071710811019600001000005','','01071710811019600001000005'),
('070534524264000001000005','','01070534524264000001000005'),
[Code] ....
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Apr 9, 2015
I'm working on a join between two tables where I only want one row returned... I'm matching on two columns between two tables. One of those columns in the target table could be null. I only want one record returned.
create table #vehicle(id int, vehiclemake varchar(10), vehiclemodel varchar(10), classtype varchar(1))
create table #class(id int, classtype varchar(1), value int)
insert into #vehicle values(1, 'AUDI', 'R8', 'A')
insert into #vehicle values(2, 'AUDI', null, 'B')
insert into #class values(1, 'A', 100)
insert into #class values(2, 'B', 1)
[Code] ....
Using the above example, if VehicleModel is anything other than 'R8' is specified then I want it to return the other class type record.
This is going to be used as a join within a bigger statement, so I'm not sure ordering and returning top 1 is going to work.
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Sep 16, 2015
I've a table that stores operationcode for each jobnumber. The jobnumber can have multiple operationcode. From the below DDL, I need to show all the jobs that have operation codes as 2001 and 2002. In the below DDL Jobnumber 80011 has both the operation codes 2001 and 2002 so this job will display on the report.
On the other hand Job 80021 only has operationcode 2001 and I do not want this job to show up on the report.
I need to show all the operationcodes for a job if it has operationcode 2001 and 2002.
USE tempdb;
GO
DECLARE @TEST_DATA TABLE
(
DT_ID INT IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED
, OperationCodeVARCHAR(10) NOT NULL
, EmployeeCode VARCHAR(10) NOT NULL
[Code] ....
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Mar 27, 2008
We're looking at optimizing some of our tables because we have indexes on columns that are not used. So for example we might have a table that has 6GB of data and 4GB in indexes (according to sp_spaceused). We need to know how much of the 4GB of indexes is consumed by each of the indexes individually. I've tried dbcc showcontig, but that doesn't tell me the amount of space used by the index that I run it for.
Second (and by far not as important), is there a way to determine how much space is being consumed by data in a specific column. The original creator of some of the tables added an incrementing identity column that is used no where in the system. I'd like to be able to say..."If we drop this column we'll save XXX in space."
Knowing the index space is more critical, the column space would be nice but not necessary.
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Mar 28, 2014
I have a DB with some tables and, on certain tables, i've a column named "ID_COMPUTER".
I need to find all the rows where id_computer=<specific_value> from all the tables of my database, when column "ID_COMPUTER" exists.
Pseudo-code would be: select * from db.* where id_computer=<specific_value>
how to write this ?
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Dec 4, 2014
I need to insert and update a table. One column of the table needs to conform to a format as: XXXXXXX.XXXXX
If any data is not complying to the format an error needs to be thrown.
How to implement this constraint!
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Apr 17, 2014
I have a few questions about the following t-sql 2008 r2 sql code listed below that is calling a stored procedure:
DECLARE@return_value int,
@endYear SMALLINT = 2014,
@CustomerID INT = '9999',
@Schedules CHAR(1) = N'C'
EXEC [dbo].[sproom] @endYear
,@CustomerID
,@Schedules
The sql listed above does execute the stored procedure called [dbo].[sproom] successfully and returns all the data all the rows from the stored procedure multiple times. However can you tell me the following:
1. How can I have the stored procedure return distinct rows?
2. I want the stored procedure to return selected columns. I tried using the OUTPUT parameter for some of the columns, but I got the error message, "Procedure or function spHomeroom has too many arguments specified.".
when I change the sql above to:
DECLARE @return_value int,
@endYear SMALLINT = 2014,
@CustomerID INT = '9999',
@Schedules CHAR(1) = N'C',
@CustName varchar(50)
EXEC [dbo].[sproom] @endYear
,@CustomerID
,@Schedules
,@CustName
That is when I get the error message.
A solution might be to change the stored procedure, but I would prefer not to since this is a generic stored procedure that I believe a lot of t-sqls and stored procedures will use.
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May 11, 2015
I have a stored procedure that runs every 5 minutes. I have one block in the procedure that will only run if there are records in a temp table. In addition, I would like this block to run only if the current time is between 0 and 5 minutes past the hour or between 30 and 35 minutes past the hour.
Currently, my block looks like this:
IF OBJECT_ID('tempdb..#tmpClosedPOs') IS NOT NULL
BEGIN
I can get the current minutes of the current time by using:
Select DATEPART(MINUTE,GetDate())
I know that it should be simple, but I'm pretty new at Stored Procedures. How do I alter the IF statement to check for the time and only run the block if it's between the times I stated? I started to DECLARE @Minutes INT, but wasn't sure where to go from there.
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Jul 20, 2005
Can I dynamically (from a stored procedure) generatea create table script of all tables in a given database (with defaults etc)a create view script of all viewsa create function script of all functionsa create index script of all indexes.(The result will be 4 scripts)Arno de Jong,The Netherlands.
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Aug 5, 2013
SQL Query. What i need is to be able to extract specific characters from data.
Eg name
1.2-KPIA1-App-00001 this is a name i require, but i also require the '1.2' and the 'KPIA1' to be displayed in new columns in the results
i.e. 1.2-KPIA1-App-00001 1.2 KPIA1
*I need this in part of a script as there is thousands of rows of data.
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Feb 20, 2007
Hi i need to create this query. I have a table here named "Subject" from the database "Filteredtask". I want the output to show in this way:
Subject Quantity
Application Recieved count of application recieved
Process Application count of process application
Screen Application count of screen application
Initial Interview count of initial interview
Technical Exam and Interview count of technical exam and interview
I have used this code. My problem is that i put it in descending order to obtain this output, but if for example Screen application had more count it will ruin the hierarchy of the subject.
SELECT subject, COUNT(subject) AS Expr1
FROM dbo.FilteredTask
WHERE (subject = N'application received') OR
(subject = 'process application') OR
(subject = 'screen application') OR
(subject = N'initial interview') OR
(subject = 'profiles assessment') OR
(subject = 'technical exam and interview')
GROUP BY subject
ORDER BY expr1 DESC
__________________________________________________
Your future is made by the things you are presently doing.
Andrew
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Nov 30, 2014
I have written an update, if i see the execution plan of that update, it is showing the Non Clustered index are updated. I am not able to understand the fact, that when there was no change in Leaf level root data how does Non clustered index got updated.
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Nov 2, 2010
I am trying to create a temp table with a non-clustered index.
Originally I tried to create the index after I created the table.
This seemed to work fine, so I added my stored procedure to our Production environment.
However, when two users called the stored procedure at once I got the following error:
There is already an object named 'IX_tmpTableName' in the database. Could not create constraint. See previous errors.
I then found that SQL Server does generate unique names for the temp table but not all the objects associated with the temp table if they are explicitly named.
This is easy enough to solve for a PRIMAY KEY or UNIQUE constraint because the do not have to be named.
Is there a way to create an non-clustered index on a temp table without naming it?
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Nov 12, 2014
In a Stored Proc I am creating the following temp table and index:
CREATE TABLE [dbo].[#ShipTo](
[Ship_to_Num] [int] NOT NULL,
[Country_key] [nvarchar](3) NULL,
CONSTRAINT [PK_ShipTo] PRIMARY KEY CLUSTERED
(
[ship_to_Num] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
The stored Proc runs fine from "exec", but when you batch into a Job it gives the error that "PK_ShipTo" already exists! I even put in a drop table on #ShipTo, but the same effect.
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Jan 10, 2015
I'm running SQL Server 2008 R2 with latest patch. I'm performing all index maintenance online. How long the final phase of the index operation takes? Does the size of the index matter and if any blocking occurs, does the duration increase because the size of indexes is larger? I've been told by management, we can not have any downtime, its my understanding even with online index there's a chance blocking can occur in the final phase of the index operation. My database and index size is over 1.5 tb and the number of transaction per second are in the 100's.
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Aug 27, 2015
I try to create script which Rebuild one table index after transaction log backup.
In my script first i check or backup is complete in 10 minutes if i find record i do it index rebuild if i don't find i need go back and check again.
The problem is that query finish if don't find a backup record, How i can loop that script that he checking until find the record and then start rebuild index.
Use DB
GO
DECLARE @database_name NVARCHAR(50)
SELECT @database_name='DB'`
START:
WHILE EXISTS
(SELECT msdb.dbo.backupset.database_name,
[Code] .....
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May 2, 2009
I believe query optimizer can leverage the predicate used to define the filtered index. But I came to a situation that's not true:
USE tempdb;
GO
IF OBJECT_ID('Employees') IS NOT NULL
DROP TABLE Employees;
GO
CREATE TABLE Employees
[Code] ....
If we take a look at the query plan. we'll find an unnecessary Nested Loop and Key Lookup operator there with the IS NULL predicate.
Ironically, If I change the IS NULL to IS NOT NULL in both the index and Query, everything goes fine.
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Jan 27, 2006
Hi Minor and inconsequential but sometimes you just gotta know: Is it possible to define a non-primary key index within a Create Table statement? I can create a constraint and a PK. I can create the table and then add the index. I just wondered if you can do it in one statement. e.g. I have: CREATE TABLE MyT (MyT_ID INT Identity(1, 1) CONSTRAINT MyT_PK PRIMARY KEY Clustered, MyT_Desc Char(40) NOT NULL CONSTRAINT MyT_idx1 UNIQUE NONCLUSTERED ON [DEFAULT])which creates a table with a PK and unique constraint. I would like (pseudo SQL):CREATE TABLE MyT (MyT_ID INT Identity(1, 1) CONSTRAINT MyT_PK PRIMARY KEY Clustered, MyT_Desc Char(40) NOT NULL CONSTRAINT MyT_idx1 UNIQUE INDEX NONCLUSTERED ON [DEFAULT]) No big deal - just curious :D Once I know I can stop scouring BOL for clues. Tks in advance
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Mar 4, 2008
hi..i need help on how to create user logs with a specific transaction he made. for example, he added new item in the database, the grid wud contain user id, date, time and transaction. help po.. tnx!
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Dec 1, 2014
Using a full search index with the following query works with just one parameter.
declare @P0 varchar(50) = '"First*"'
SELECT *
FROM TableName
where contains ((Col1, Col2), @P0)
How do I make it work if I have two parameters, while also protecting the parameters from injection attacks?
declare @P0 varchar(50) = '"First*"'
declare @P1 varchar(50) = '"Second*"'
SELECT *
FROM TableName
where contains ((Col1, Col2), @P0 AND @P1)
If there weren't parameters, you put single quotes around the '@P0 AND @P1' to get this query to work.
In addition, while "where contains((Col1,Col2),@P0) and contains((Col1,Col2),@P1)" works, it appears to increase the execution time.
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Mar 7, 2015
I have three sprocs and three tables. I was told to use a clustered index in the first table and a unique clustered index on the second table. I never asked about the third table and the person I need to ask is on vacation. Most of the contents of the first table will be joined with all of the contents of the second table into the third table. Do I need to have a unique clustered index on the third table too?
The clustered index in the first sproc is on a unique key that I had created using by concatenating several columns together.
CREATE CLUSTERED INDEX IX_UNIQUE_KEY ON MRP.Margin_Optimization_Data (UNIQUE_KEY);
CREATE NONCLUSTERED INDEX IX_DATE ON MRP.Margin_Optimization_Data (PERIOD);
CREATE NONCLUSTERED INDEX IX_ODS_ID ON MRP.Margin_Optimization_Data
(GL_SEG1_COMPANY_ODS_ID, GL_SEG2_PROFIT_CTR_ODS_ID, GL_SEG3_LOB_ODS_ID, GL_SEG4_PRODUCT_DEPT_ODS_ID, GL_SEG5_ACCOUNT_ODS_ID);
The second sproc with the unique clustered index is on the unique key from the first table and a date attribute.
CREATE UNIQUE CLUSTERED INDEX IX_UNIQUE_KEY ON MRP.[MGN_OPT_KPI_SOURCE] (UNIQUE_KEY, PERIOD);
In the third sproc, I'll have a nonclusted index on the ODS_ID attributes, but I'm unsure of how to go about the clustered index situation.
CREATE NONCLUSTERED INDEX IX_ODS_ID ON MRP.MGN_OPT_KPI_VALUES
(GL_SEG1_COMPANY_ODS_ID, GL_SEG2_PROFIT_CTR_ODS_ID, GL_SEG3_LOB_ODS_ID, GL_SEG4_PRODUCT_DEPT_ODS_ID, GL_SEG5_ACCOUNT_ODS_ID);
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Feb 10, 2015
So I started a new job recently and have noticed a few strange configurations. Typically I would never mess with min memory per query option and index create memory option configuration because i just haven't seen any need to. My typical thought is that if it isn't broke... They have been modified on every single server in my environment.
From Books Online:
• This option is an advanced option and should be changed only by an experienced database administrator or certified SQL Server technician.
• The index create memory option is self-configuring and usually works without requiring adjustment. However, if you experience difficulties creating indexes, consider increasing the value of this option from its run value.
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Oct 30, 2015
Problem: I need to export data from a table in a database. I have an SSIS that converts data to this table. To export the data using the SSIS the file needs to be already created (from my understanding). This export location is on another server and the folder location is empty.
Question: How do I create an empty CSV file at this location using either a Script Task, SQL Query, or Space Magic? I have been searching all over for about 4 hours now to no avail.
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