What Are Some Good Books On SQL Query Optimization And Other Advanced SQL Topics?
Aug 6, 2007
I graduated from college about three years ago and have been working as a programmer using MS SQL 2000 and even though I've learned a TON in these past three years I know there is tons more I can learn.
Because my company uses Microsoft SQL Server 2000 I'd like to focus on that, but anything ANSI-SQL is perfectly fine.
So... what are some good books on SQL query optimization and other advanced SQL topics?
Thanks in advance...
View 2 Replies
ADVERTISEMENT
Mar 13, 2007
Hello,
I know the basics of DTSs and have been using them for a while. Now I REALLY want to learn the advanced concepts related to DTS's e.g.
How to make use of the "Inner Package Global Variables" Tab (which is visible in the DTS Designer "window")
How to make use of the "Outer Package Global Variables" Tab (which is visible in the DTS Designer "window")
How to make use of the "Outer Package Global Variables" Tab (which is visible in the menu bar option #4 Designer "window")
Thanks.
View 1 Replies
View Related
Mar 13, 2007
Hello,
I know the basics of DTSs and have been using them for a while. Now I REALLY want to learn the advanced concepts related to DTS's e.g.
How to make use of the "Inner Package Global Variables" Tab (which is visible in the DTS Designer "window")
How to make use of the "Outer Package Global Variables" Tab (which is visible in the DTS Designer "window")
How to make use of the "Outer Package Global Variables" Tab (which is visible in the menu bar option #4 Designer "window")
Many advance thanks for your help.
View 8 Replies
View Related
Sep 30, 2002
Does anyone know of any good books on DTS? I am currently using SQL 7.
Thanks in advance
View 2 Replies
View Related
Sep 14, 1998
Hi there,
Any good books to Know the internals of MS-SQL server 6.5
Thanks
Vivek
View 2 Replies
View Related
Mar 16, 1999
Sorry if this has been posted before, but I performed a search on the archives and didn't find anything !
I have just been turned over a SQL 6.5 SP3 / NT 4.0 SP3 server that has several SQL errors in the event log. I need to find a good book to read/scan, so I can get up to speed on SQL.
Thanks,
Mike Givens MCSE
mikeg@iowa.com
View 2 Replies
View Related
Sep 26, 2006
Can anyone make some good book recommendations for SQLServer2000 other than the Microsoft BOL?
Thanks
View 11 Replies
View Related
Feb 22, 2008
Can you guys pls suggest Good books on SQL Server 2005 ??
Thx
View 7 Replies
View Related
Jun 5, 2003
Hi,
I am an Oracle DBA with over 7 yrs of experience.I am new to sql server 2000 and am given the responsibility of sql server 2000 production databases in a few weeks.I already have the sql server 2000 DBA survival guide.
I would like to know if there are any good books out there for
a)backup and recovery
b)General DBA tasks
c)Performance tuning.
Thanks,
Copernicus
View 4 Replies
View Related
Jun 9, 2008
Hi All -
Any recommendations for good advanced t-sql books/articles? I find myself involved with writing increasingly more complex queries and after spending a few hours on some, and then searching on this site for potential answers/help, I am wondering if there might be some good books on creating more advanced/complex t-sql for real world scenarios.
Thanks
- will
View 3 Replies
View Related
Jun 12, 2008
I need query to fetch values of postedname,repliername,categoryname,no of topics,no of posts from the 4 tables mentioned below.
tablename----categorymgmt
fields----categoryid,categoryname,categorydesc
tablename----forum_topics
fields----topicid,categoryid,topic,userid,description
tablename----from forum_reply
fileds----replyid,topicid,userid
tablename----usermgmt
fileds----userid,username
View 16 Replies
View Related
Nov 23, 2004
How to optimize the following Stored procedure running on MSSQL server 2000 sp4 :
CREATE PROCEDURE proc1
@Franchise ObjectId
, @dtmStart DATETIME
, @dtmEnd DATETIME
AS
BEGIN
SET NOCOUNT ON
SELECT p.Product
, c.Currency
, c.Minor
, a.ACDef
, e.Event
, t.Dec
, count(1) "Count"
, sum(Amount) "Total"
FROM tb_Event t
JOIN tb_Prod p
ON ( t.ProdId = p.ProdId )
JOIN tb_ACDef a
ON ( t.ACDefId = a.ACDefId )
JOIN tb_Curr c
ON ( t.CurrId = c.CurrId )
JOIN tb_Event e
ON ( t.EventId = e.EventId )
JOIN tb_Setl s
ON ( s.BUId = t.BUId
and s.SetlD = t.SetlD )
WHERE Fran = @Franchise
AND t.CDate >= @dtmStart
AND t.CDate <= @dtmEnd
AND s.Status = 1
GROUP BY p.Product
, c.Currency
, c.Minor
, a.ACDef
, e.Event
, t.Dec
RETURN 1
END
GO
View 8 Replies
View Related
Aug 15, 2007
Hi,
Can anyone help me optimize the SELECT statement in the 3rd step? I am actually writing a monthly report. So for each employee (500 employees) in a row, his attendance totals for all days in a month are displayed. The problem is that in the 3rd step, there are actually 31 SELECT statements which are assigned to 31 variables. After I assign these variable, I insert them in a Table (4th step) and display it. The troublesome part is the 3rd step. As there are 500 employees, then 500x31 times the variables are assigned and inserted in the table. This is taking more than 4 minutes which I know is not required :). Can anyone help me optimize the SELECT statements I have in the 3rd step or give a better suggestion.
DECLARE @EmpID, @DateFrom, @Total1 .... // Declaring different variables
SELECT @DateFrom = // Set to start of any month e.g. 2007-06-01 ...... 1st
Loop (condition -- Get all employees, working fine)
BEGIN
SELECT @EmpID = // Get EmployeeID ...... 2nd
SELECT @Total1 = SUM (Abences) ...... 3rd
FROM Attendance
WHERE employee_id_fk = @EmpID (from 2nd step)
AND Date_Absent = DATEADD ("day", 0, Convert (varchar, @DateFrom)) (from 1st step)
SELECT @Total2 ........................... same as above
SELECT @Total3 ........................... same as above
INSERT IN @TABLE (@EmpID, @Total1, ...... @Total31) ...... 4th
Iterate (condition) to next employee ...... 5th
END
It's only the loop which consumes the 4 minutes. If I can somehow optimize this part, I will be most satisfied. Thanks for anyone helping me....
View 11 Replies
View Related
Feb 19, 2001
Trying to optimize a query, and having problems interpreting the data. We have a query that queries 5 tables with 4 INNER JOINS. When I use INNER HASH JOIN, this is the result:
(Using SQL Programmer)
SQL Server Execution Times:
CPU time = 40 ms, elapsed time = 80 ms.
Table 'Table1'. Scan count 1, logical reads 1, physical reads 0, read-ahead reads 0.
Table 'Table2'. Scan count 1, logical reads 40, physical reads 0, read-ahead reads 0.
Table 'Table3Category'. Scan count 1, logical reads 2, physical reads 0, read-ahead reads 0.
Table 'Table4'. Scan count 1, logical reads 1, physical reads 0, read-ahead reads 0.
Table 'Table5'. Scan count 1, logical reads 17, physical reads 0, read-ahead reads 0.
When I use INNER JOIN, this is the result:
SQL Server Execution Times:
CPU time = 10 ms, elapsed time = 34 ms.
Table 'Table1'. Scan count 4, logical reads 10, physical reads 0, read-ahead reads 0.
Table 'Table2'. Scan count 311, logical reads 670, physical reads 0, read-ahead reads 0.
Table 'Table3'. Scan count 69, logical reads 102, physical reads 0, read-ahead reads 0.
Table 'Table4'. Scan count 69, logical reads 98, physical reads 0, read-ahead reads 0.
Table 'Table5'. Scan count 1, logical reads 17, physical reads 0, read-ahead reads 0.
Now, when timing the code execution on my ASP page, it's "faster" not using the HASH. Using HASH, there are a few Hash Match/Inner Joins reported in the Execution Plan. Not using HASH, there are Bookmark Lookups/Nested Loops.
My question is which is better to "see": Boomark Lookups/Nested Loops or Hash Match/Inner Joins for the CPU/Server?
Thanks.
View 1 Replies
View Related
Mar 14, 2003
IS there any way to rewrite this Query in optimized way?
SELECT dbo.Table1.EmpId E from dbo.Table1
where EmpId in(
SELECT dbo.Table1.EmpId
FROM (SELECT DISTINCT PersonID, MAX(dtmStatusDate) AS dtmStatusDate
FROM dbo.Table1
GROUP BY PersonID) derived_table INNER JOIN
dbo.Table1 ON derived_table.PersonID = dbo.Table1.PersonID AND
derived_table.dtmStatusDate = dbo.Table1.dtmStatusDate))
Thanks....j
View 1 Replies
View Related
Mar 7, 2006
How can I optimized the following query:
(SELECT e.SID
FROMStudents s
JOINTable1e ON e.SID= s.SID
JOINTable2 ed ON ed.Enrollment = e.Enrollment
JOINTable3 t ON t.TNum = e.TNum
JOINTable4 bt ON bt.TNum = t.TNum
JOINTable5 b ON b.Batch = bt.Batch
JOIN IPlans i ON i.IPlan = ed.IPlan
JOINPGroups g ON g.PGroup= i.PGroup
WHERE t.TStatus= 'ACP'
ANDed.EStatus= 'APR'
ANDe.SID=(select distinct SID from Table1 where Enrollment=@DpEnrollment))
AND(ed.EffectiveDate=
(SELECT EffectiveDate
FROM Table2 ed JOIN Table1 e
ON e.enrollment=ed.enrollment
WHERE IPlan = @DpIPlan
ANDTCoord = @DpTCoord
ANDAGCoord= @DpAGCoord
ANDDCoord=@DpDCoord )
ANDDSeq= @DpDSeq)
ANDe.SID=
(select distinct SID from Table1 where Enrollment=@DpEnrollment))
)
ANDed.TerminationDate=
(SELECT TerminationDate
FROM Table2 ed JOIN Table1 e
ON e.enrollment=ed.enrollment
WHERE IPlan = @DpIPlan
ANDTCoord = @DpTCoord
ANDAGCoord= @DpAGCoord
ANDDCoord= @DpDCoord )
ANDDSeq= @DpDSeq)
ANDe.SID=
(select distinct SID from Table1 where Enrollment=@DpEnrollment))
)
))
View 2 Replies
View Related
Mar 20, 2006
DECLARE @PTEffDate_tmp AS SMALLDATETIME
SELECT @PTEffDate_tmp = DateAdd(day, -1, PDate)
FROM PDates pd WHERE iplan = @DIPlan and pd.TCoord = @DTCoord and DType = 'EF'
DECLARE @PTCoord_tmp as char(3)
SELECT @PTCoord_tmp = tc.TCoord
FROM PDates pd JOIN TCoords tc ON (pd.TCoord = tc.TCoord)
WHERE pd.Iplan = @DIPlan and tc.TGroup = @TGroup_tmp
and PDate = @PTEffDate_tmp and DateType = 'TR1'
DECLARE @EStatus_tmp as char(3)
SELECT @EStatus_tmp = EDStatus From EDetails ed
JOIN ENR e ON (ed.enr = e.enr)
JOIN Trans t ON (e.transID = t.TransID)
WHERE iplan = @DIPlan
and ed.TCoord = @PTCoord_tmp
and t.TransS= 'ACP'
and DCoord = @DCoord
and CEnr is null
View 3 Replies
View Related
Aug 17, 2006
How can I optimazed my query. Since my DB is more then 1 mln it takes a while to do all those join?
select *
FROM EEMaster eem
JOIN NHistory nh
ON eem.SNumber = nh.SNumber
OR eem.OldNumber = nh.SNumber
OR eem.CID = (Replicate ('0',12-len( nh.SNumber))+ nh.SNumber )
View 4 Replies
View Related
Apr 23, 2008
I work on tables containing 10 million plus records.
What are the general steps needed to ensure that my queries run faster?
I know a few:
- The join fields should be indexed
-Selecting only needed fields
-Using CTE or derived tables as much as I can
-Using good table reference
eg
select a.x , b.y
from TableA a inner join TableB b
on a.id = b.id
I will be happy if somebody could share or add more to my list.
Regards to all
View 4 Replies
View Related
May 1, 2008
Dear all,
The below query take 7 min to execute so i want optimize the query.please any suggestions..........
SELECT DISTINCT VC.O_Id C_Id, VC.Name C_Name,VB.Org_Id B_Id,
VB.code S_Code,VB.Name S_Name, mt12.COLUMN003 M_D_Code,
mt12.COLUMN004 M_D_Name,CQ.COLUMN004 R_Code,
CQ.COLUMN005 R_Date, CQ.COLUMN006 Ser,CQ.COLUMN008 R_Nature,
CQ.COLUMN011 E_Date,mt26.COLUMN003 W_Code, mt26.COLUMN004 W_Name,
mt17.COLUMN005 V_Code,mt17.COLUMN006 V_Name, mt19.column002 I_Code,
mt19.column003 I_Name, mt19.COLUMN0001 R_I_No,mt92.COLUMN001 B_Id,
mt92.COLUMN005 B_No, CASE mt92.COLUMN006 WHEN '0' THEN 'Ser'
WHEN '1' THEN 'Un-Ser' WHEN '2' THEN 'Ret' WHEN '3' THEN 'Retd'
WHEN '4' THEN 'Rep' WHEN '5' THEN 'Repd' WHEN '6' THEN 'Con'
WHEN '7' THEN 'Cond' ELSE mt92.COLUMN006 END S_C_Type,
mt20.COLUMN003 T_G_Code,mt20.COLUMN004 T_G_Name, V.U_Code,V.U_Name,
mt19.column005 I_Quantity,mt20.COLUMN003 T_Code, mt20.COLUMN004 T_Name,
mt59.COLUMN005 T_Price,VR.code C_L_Code,
VR.Name C_L_Name
FROM tab90 CQ
INNER JOIN tab91 mt19 ON mt19.COLUMN002 = CQ.COLUMN001
LEFT JOIN tab92 mt92 ON mt92.COLUMN002 = CQ.COLUMN001
LEFT JOIN tab93 mt93 ON mt93.COLUMN004 = CQ.COLUMN001
INNER JOIN tab12 mt12 ON mt12.COLUMN001 = CQ.COLUMN003
LEFT JOIN tab26 mt26 ON mt26.COLUMN001 = CQ.COLUMN009
LEFT JOIN tab20 mt20 ON mt20.COLUMN001 = mt93.COLUMN005
LEFT JOIN tab59 mt59 ON mt59.COLUMN002=mt20.COLUMN001
LEFT JOIN tab17 mt17 ON mt17.COLUMN001 = CQ.COLUMN010
INNER JOIN VM V ON V.UOM_ID = mt19.COLUMN004
INNER JOIN tab19 mt19 ON mt19.COLUMN001 = mt19.COLUMN003
INNER JOIN vOrg VR ON CQ.COLUMN007 = VR.Org_Id
INNER JOIN vOr VB ON CQ.COLUMN002 = VB.Org_Id
INNER JOIN vOr VC ON VB.Top_Parent = VC.Org_Id
WHERE CQ.COLUMN005 Between '02/01/2007' and '08/25/2008' And VC.O_Id in ('fb243e92-ee74-4278-a2fe-8395214ed54b')
Thanks&Regards,
Msrs
View 4 Replies
View Related
Jun 18, 2008
Hi All,
table with initial data:
Primary key (COL1 + COL2)
COL1 COL2 NEW LATEST
1241 1 1
125 0 1 1
by default, NEW and LATEST columns will have values 1, 1.
Now, one row is inserted with values (124,2)
Table data should be:
COL1, COL2, NEW, LATEST
1241 1 0
125 0 1 1
1242 0 1
LATEST column value changes for Row 1 since there is a repetition of value 124, meaning this row is no longer the latest.
NEW COLUMN value changes for ROW 2 since there it is no longer new; we already have an occurrence of 124 in the first row.
I m not sure if i can solve this query using any option other than cursor. it will be like taking first row --> comparing it with all the other rows and then moving further.
Plz. suggest me if there is a better approach for doing this
View 11 Replies
View Related
Mar 12, 2007
Okay guys, this will probably be messy. Just throw out some thoughts and I'll deal with it. How do I make this query smaller and more efficient?
Query deleted and link posted: http://theninjalist.com/
View 4 Replies
View Related
Apr 9, 2008
Hello!
I have a query:
SELECT *,
.....
(SELECT add_house
FROM hs_address
WHERE add_id = do_address_registration_id) as add_house,
(SELECT add_flat
FROM hs_address
WHERE add_id = do_address_registration_id) as add_house,
.....
FROM hs_donor
WHERE do_id = 400
Fields add_flat and add_house belong to one table. How one may optimize this query?
P.S. do_address_registration_id can be equal NULL
TIA
View 1 Replies
View Related
Mar 11, 2008
I am writing a query which will display employee details who is handling maximum number of projects.
Here I am joining 2 tables. one is LUP_EmpProject, which contain employee id and project id and project date, in this table I have used a composite primary key of employee id, project id and project date. The other table is
EmployeeDetails which contain employee names and employee id.
I want to display the details of the employee who is handling maximum projects.
Below given is the code which is working fine. But the query is taking time to execute it. Any body know how to optimize the code so that I can get the result quickly.
Code Snippet
SELECT EmployeeDetails.FirstName+' '+EmployeeDetails.LastName AS EmpName,
COUNT(LUP_EmpProject.Empid) AS Number_Of_Projects
FROM LUP_EmpProject
INNER JOIN EmployeeDetails
ON LUP_EmpProject.Empid=EmployeeDetails.Empid
GROUP BY EmployeeDetails.FirstName+' '+EmployeeDetails.LastName,
LUP_EmpProject.Empid
HAVING COUNT(LUP_EmpProject.Empid)>0
AND COUNT(LUP_EmpProject.Empid)=(SELECT
MAX(Number_Of_Projects)
FROM (SELECT COUNT(LUP_EmpProject.Empid) Number_Of_Projects
FROM LUP_EmpProject
GROUP BY LUP_EmpProject.Empid)AS sub)
Please help!!!!!!!!!!
View 6 Replies
View Related
Aug 14, 2007
My Query is like this..
set @Grouptitle = @GroupPFR
set @GroupOrder = 5
set @Unittype = 2
set @MetricName = 'Product to Net Revenue %'
set @MetricOrder = 6
insert into @FinalData (Grouptitle,MetricName,UnitTypeID,WeekDate,WeekValue,GroupOrder,metricOrder)
select @GroupTitle,@MetricName,@UnitType,f1.weekdate,
max(f1.WeekValue)/case when max(f2.WeekValue) = 0 then NULL else max(f2.WeekValue) end,
@GroupOrder,@MetricOrder --from @temptable
from @FinalData f1 inner join @FinalData f2 on f1.weekdate = f2.weekdate
where (f1.Grouptitle = @GroupPFR and f1.MetricName = '$ Products')
and ( f2.Grouptitle = @GroupRevenue and f2.MetricName = 'Net Revenue')
group by f1.weekdate
There are many calculations like this in my procedure.
and It takes like 3 min to run whole procedure
now as I am doing group by..
So In Execution plan it show me that 60% of the query time is take n by SORT operation..
can any one give me any other option to do this.
Thanks
View 9 Replies
View Related
Dec 5, 2007
Hi all,
I have the following query to be optimized. It just takes too long to complete the execution.
----------------------------------------------------------------------------------
SELECT COUNT(*)
FROM Tbl_A a
INNER JOIN Tbl_B b
ON a.AID = b.AID
INNER JOIN Tbl_C c
ON a.AID = c.AID
INNER JOIN Tbl_D d
ON d.DID = a.DID
INNER JOIN Tbl_E e
ON e.DID = d.DID
INNER JOIN Tbl_F f
ON e.EID = f.EID
WHERE a.Col_1 = 1
AND (a.Col_2 LIKE N'%abc%')
AND a.Col_3 <>
CASE
WHEN d.Col_1 ='ABC' THEN 'BR'
ELSE ''
END
AND c.Col_1 =
CASE
WHEN d.Col_1 ='ABC' THEN 'ABC_COMPANY'
ELSE 'PPRO'
END
AND f.Col_1 = 'val1'
------------------------------------------------------------------------------------------------------------------
here is the estimated records for the tables.
------------------------------------------------------------------------------------------------------------------
Tbl_A has over 150,000 records
Tbl_B has over 150,000 records
Tbl_C has over 450,000 records
Tbl_D has over 33 records
Tbl_E has over 4000 records
Tbl_F has over 5000 records
------------------------------------------------------------------------------------------------------------------
Thanks in advance,
Soe Moe
View 5 Replies
View Related
Apr 10, 2008
Hello Everybody,
I have a small tricky problem here...need help of all you experts.
Let me explain in detail. I have three tables
1. Emp Table: Columns-> EMPID and DeptID
2. Dept Table: Columns-> DeptName and DeptID
3. Team table : Columns -> Date, EmpID1, EmpID2, DeptNo.
There is a stored procedure which runs every day, and for "EVERY" deptID that exists in the dept table, selects two employee from emp table and puts them in the team table. Now assuming that there are several thousands of departments in the dept table, the amount of data entered in Team table is tremendous every day.
If I continue to run the stored proc for 1 month, the team table will have lots of rows in it and I have to retain all the records.
The real problem is when I want to retrive data for a employee(empid1 or empid2) from Team table and view the related details like date, deptno and empid1 or empid2 from emp table.
HOw do we optimise the data retrieval and storage for the table Team. I cannot use partitions as I have SQL server 2005 standard edition.
Please help me to optimize the query and data retrieval time from Team table.
Thanks,
Ganesh
View 4 Replies
View Related
Feb 5, 2007
I need help in optimizing this query. The major time takes in calling a remote database. Thanks in advance.ALTER PROCEDURE dbo.myAccountGetCallLogsTest@directorynumber as varchar(10),@CallType as tinyint ASdeclare @dt as intSELECT TOP 1 @dt=datediff(day,C.EstablishDate,getdate())FROM ALBHM01CGSERVER.Core.dbo.Customer C INNER JOIN ALBHM01CGSERVER.Core.dbo.UsgSvc U ON C.CustID = U.CustIDWHERE (U.ServiceNumber = @directoryNumber)ORDER BY C.EstablishDate DESCIF @dt>90select DN as Number, Remote_DN as [Remote Number], City, StartTime as [Start Time], EndTime as [End Time] from vw_Call_Logs where DN = '1' + @directoryNumber and call_type = @CallType and datediff(day,starttime,getdate())<90order by starttime descELSE select DN as Number, Remote_DN as [Remote Number], City, StartTime as [Start Time], EndTime as [End Time] from vw_Call_Logs where DN = '1' + @directoryNumber and call_type = @CallType and datediff(day,starttime,getdate())< @dtorder by starttime desc
View 13 Replies
View Related
Mar 28, 2008
Hi , How to optimize sql query in sql server 2005, any idea
View 4 Replies
View Related
May 2, 2002
i have query similar to this:
select count(a.callid) from tbl1 as a
inner join tbl2 as b on a.calldefid=b.calldefid
where a.programid=175
select count(a.callid) from tbl1 as a
inner join tbl2 as b on a.calldefid=b.calldefid
where b.programid=175
callid - pk on tbl1
calldefid - nonclustered index on both tbl1 and tbl2
programid - nonclustered index on both tbl1 and tbl2
tbl2 is the smaller table
from my understanding, the second query will run faster because you reduce the records in the smaller table, then join to the larger table (tbl1).
but can you explain to me why limiting the rows on tbl1 first, then joining to tbl2 would take longer?
View 1 Replies
View Related
Apr 11, 2008
hi guys
i have a query which will take lot of load on the sql server and it need to optimized.
can any one suggest in optimizing the below query.
SELECT TOP 1 p.store_purchase_id
FROM valid_purchase p WITH (NOLOCK)
INNER JOIN purchase_item pitm WITH (NOLOCK)
ON p.purchase_id = pitm.purchase_id
INNER JOIN customer_phone c WITH (NOLOCK)
ON p.customer_brand_id = c.customer_brand_id
INNER JOIN phone ph WITH (NOLOCK)
ON c.phone_id = ph.phone_id
WHERE
p.last_name = ''
AND pitm.item_datetime > CURRENT_TIMESTAMP
AND pitm.item_datetime <= DATEADD(d, 12, CURRENT_TIMESTAMP)
AND REPLACE(ph.number, '-', '' ) = ''
Thanks
Ramakanth
View 5 Replies
View Related
