Optimizing Query - Product Tips
Jan 6, 2004
Hello everyone!
I've got a problem with a real slow query, I would be very happy if somebody has any idea to improve the speed of it...
The idea is to get the top 2 products, a customer hasn't bought wich are in his interest...
query (simplificated)
-------------------------------------------------
SELECT TOP 2 prodID, Title, Price FROM bestSold7Days WHERE
prodID NOT IN (SELECT prodID FROM orders INNER JOIN orderProducts ON orders.orderID = orderProducts.orderID WHERE (orders.custID=394))
AND
(prodType = COALESCE((SELECT TOP 1 products.prodID FROM orders INNER JOIN orderProducts ON order.orderID = orderProducts.orderID INNER JOIN products ON orderProducts.prodID = products.prodID WHERE (orders.custID=394) GROUP BY products.prodType ORDER BY SUM(orderProducts.PCS) DESC), 2))
-------------------------------------------------
end query
(COALESCE is for replacing if the customer hasnt ordered anything, or hasnt ordered anything of this type)...
Thanks for any time spent!
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Jan 18, 2008
Hi,
I have a SSIS package that reads a text file and generates an output file out of it after transformations.
Now, a 20MB text file (containing about 50,000 records) is taking around 5 mins to complete.
There is a Data Flow Task which is taking the major chunk of the time.
It contains the following:
1) File Source
2) Conditional Splits (2 in number)
3) Derived Column
4) Data Conversion Transformation
5) OLE DB Destinations (3 in number)
The number of records being processed is close to 50,000
Please share your tips for optimizing the package.
Thanks in advance.
Regards,
B@ns
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May 9, 2008
Hi.
Me any my team are soon going to work on a performance critical application. My team has some experience of writing SQL, however we have not done performance oriented coding.
I am looking for a comphrehensive document which lists information for writing good SQL with performance. Please guide if there is such a document or web site.
Thanks,
Prasad
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Jul 20, 2005
I have a stored procedure that queries a database using a Selectstatement with some inner joins and conditions. With over 9 millionrecords it takes 1 min 36 sec to complete. This is too slow for myrequirements.Is there any way I can optimize this query. I have thought aboutusing an indexed view. I haven't done one before, does anyone know ifthis would have potential to improve performance or indeed any otherperformance enhancing techniques I might try.SELECT vehicle.vehicle_idFROM (( [vehicle]INNER JOIN [vehicle_subj_item_assn] onvehicle.vehicle_id=[vehicle_subj_item_assn].vehicle_id)INNER JOIN [subj_item] on[vehicle_subj_item_assn].subj_item_id=[subj_item].subj_item_id)INNER JOIN [template_field] on[subj_item].subj_item_id=[template_field].subj_attr_idWHERE([template_field].template_field_id=@template_field_id) AND([template_field].template_field_type_id=3) AND([vehicle_subj_item_assn].subj_item_value_text=@value) AND(vehicle.end_dtm IS NOT NULL)ThanksGavin
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Jun 3, 2004
Hello,
I am hoping someone here can help me optimize the following query:
SELECT
INCOMING.DATE_TIME, INCOMING.URL, INCOMING.HITS,
USER_NAMES.USER_LOGIN_NAME,
CATEGORY.NAME
FROM
(wsHQMay2004.dbo.INCOMING INCOMING INNER JOIN wsHQMay2004.dbo.CATEGORY CATEGORY ON INCOMING.CATEGORY = CATEGORY.CATEGORY)
INNER JOIN wsHQMay2004.dbo.USER_NAMES USER_NAMES ON INCOMING.USER_ID = USER_NAMES.USER_ID
WHERE
INCOMING.DATE_TIME >= '2004-05-01 00:00:00.00' AND
INCOMING.DATE_TIME < '2004-06-01 00:00:00.00'
ORDER BY
INCOMING.URL ASC
I am just hoping to get some tips on perhaps a better way to write this query as right now, due to the size of the incoming table, this query just takes forever.
Any advise will be apreciated.
Thanks.
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May 28, 2004
we have an insurance program up and running in our regions and we get random reports of slowness. in an effort to track down all facets of slowness i am looking at all my sql code to make sure it is as efficient as possible. I know a little about SQL and writing SQL statements, enough to help me do my job well. but i do not write optimized code.
if request.form("selPolicyNum") <> "" then
sqlPolicyInfo = "SELECT PIEffectiveDate, PIExpirationdate from PIMaster where PIPolicyNum='" & request.form("selPolicyNum") & "'"
Set rsPolicyInfo = Server.CreateObject("ADODB.Recordset")
Set rsPolicyInfo.ActiveConnection = webLookupConn
'rsPolicyInfo.CursorType = adOpenDynamic
'rsPolicyInfo.LockType = adLockOptimistic
rsPolicyInfo.Source = sqlPolicyInfo
'rsPolicyInfo.CursorLocation = adUseClient
rsPolicyInfo.Open
'response.write sqlPolicyInfo
end if
if request.form("selPolicyNum") <> "" then
sqlRemarkInsert="INSERT INTO clRemarks (PolicyNum, AccountNum, UserID, RemarkBody, CreationDate, PolEffectiveDate, PolExpDate, RemarkCategory1, RemarkCategory2, RemarkCategory3, RemarkCategory4, RemarkCategory5, RemarkCategory6, RemarkCategory7, RemarkCategory8, RemarkCategory9, RemarkCategory10, RemarkCategory11, RemarkCategory12, RemarkCategory13) VALUES ('"
sqlRemarkInsert=sqlRemarkInsert & request.form("selPolicyNum") & "', '" & request.form("txtAcctNum") & "', '" & request("aysmenu")("userid") & "', '" & Replace(request.form("RemarkBody"),"'","''") & "', '" & CurrDate & "', '" & rsPolicyInfo("PIEffectiveDate") & "', '" & rsPolicyInfo("PIExpirationDate") & "', '" & request.form("chkIssuingInstructions") & "', '" & request.form("chkLossControl") & "', '" & request.form("chkLossHistoryClaims") & "', '" & request.form("chkReinsurance") & "', '" & request.form("chkMVRDriverIssues") & "', '" & request.form("chkBilling") & "', '" & request.form("chkGeneral") & "', '" & request.form("chkCancellationDNR") & "', '" & request.form("chkPolicyAmendments") & "', '" & request.form("chkExperienceRatingInfo") & "', '" & request.form("chkDiscretionaryPricing") & "', '" & request.form("chkPremiumAudit") & "', '" & request.form("chkQuotingInstructions") & "')"
else
sqlRemarkInsert="INSERT INTO clRemarks (AccountNum, UserID, RemarkBody, CreationDate, RemarkCategory1, RemarkCategory2, RemarkCategory3, RemarkCategory4, RemarkCategory5, RemarkCategory6, RemarkCategory7, RemarkCategory8, RemarkCategory9, RemarkCategory10, RemarkCategory11, RemarkCategory12, RemarkCategory13) VALUES ('"
sqlRemarkInsert=sqlRemarkInsert & request.form("txtAcctNum") & "', '" & request("aysmenu")("userid") & "', '" & Replace(request.form("RemarkBody"),"'","''") & "', '" & CurrDate & "', '" & request.form("chkIssuingInstructions") & "', '" & request.form("chkLossControl") & "', '" & request.form("chkLossHistoryClaims") & "', '" & request.form("chkReinsurance") & "', '" & request.form("chkMVRDriverIssues") & "', '" & request.form("chkBilling") & "', '" & request.form("chkGeneral") & "', '" & request.form("chkCancellationDNR") & "', '" & request.form("chkPolicyAmendments") & "', '" & request.form("chkExperienceRatingInfo") & "', '" & request.form("chkDiscretionaryPricing") & "', '" & request.form("chkPremiumAudit") & "', '" & request.form("chkQuotingInstructions") & "')"
end if
rsRemarkInsert=ComProConn.Execute (sqlRemarkInsert)
rsPolicyInfo.close
Set rsPolicyInfo=nothing
that is the code used to store a remark into the system. is this code optimized already or should some of the db parameters be changed to make things faster? this is just an example of many of the SQL statements that i may or may not have to fix. thank you for any and all help.
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Jun 23, 2008
I have the following query that works fine but i'm wondering if there is a way to optimize it better as when I analyze through sql profiler it is at the top of the list of using the cpu
SELECT DISTINCT site, d, (SELECT COUNT(id) FROM anP aPV2 WHERE aPV2.confirmed=1 and aPV2.stage=2 and aPV2.inserted=0 and aPV2.site=aPV1.site and aPV2.d>=aPV1.d and aPV2.d<=aPV1.d) AS mycount FROM anP aPV1 WHERE confirmed=1 AND stage=2 AND inserted=0 ORDER BY site,d
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Sep 18, 2007
Hi,
I have the below query written so that i do not insert entries that is already existing in the table. I am trying to put in 70000 entries at a single shot and it breaks down. Can anybody help me optimize the below query so that it doesnt break? Is there any other way I can write this query?
Please do help me with this. Thanks in advance. The table in which i am inserting the entries has a composite key composed of ACCT_NUM_MIN and ACCT_NUM_MAX. I am getting this from a table which doesnt have a primary key(CORE)
INSERT INTO CRF (CORE_UID,ACCT_NUM_MIN, ACCT_NUM_MAX,BIN, BUS_ID,BUS_NM,ISO_CTRY_CD, REGN_CD, PROD_TYPE_CD, CARD_TYPE)
SELECT UID , LEFT(ACCT_NUM_MIN,16), LEFT(ACCT_NUM_MAX,16), BIN, BUS_ID, BUS_NM, ISO_CTRY_CD, REGN_CD, PROD_TYPE_CD, CARD_TYPE FROM CORE o
WHERE NOT EXISTS (SELECT * FROM CRF i
WHERE o.ACCT_NUM_MIN = i.ACCT_NUM_MIN
AND o.ACCT_NUM_MAX = i.ACCT_NUM_MAX)
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Feb 9, 2007
To start with, I'll give a simplified overview of my data.BaseRecord (4mil rows, 25k in each Region)ID | Name | Region | etcOtherData (7.5mil rows, 1 or 2 per ID)ID | Type(1/2) | DataProblemTable (4mil rows)ID | ConcatenatedHistoryThe concatenated history field is a nvarchar with up to 20 differentpipe delimited date/code combinations, eg. '01/01/2007X|11/28/2006Q|11/12/2004Q|'Using left outer joins (all from base, the rest optional) I've got aview something like:View (4mil rows)ID | Name | Region | etc | Data | Data2 | ConcatenatedHistoryQuerying it, it takes about 15-20 seconds to do this:Select ID, Name, Region, etc, Data, Data2, ConcatenatedHistory
Quote:
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Feb 2, 2007
if I have the following tables:
Table Customer_tbl
cust_id as int (PK), ...
Table Item_tbl
item_id as int (PK), ...
Table Selected_Items_tbl
selected_item_id as int (PK), cust_id as int (FK), item_id as int (FK), ...
-------
With the following query:
select cust_ID from selected_items_tbl WHERE item_id in (1, 2, n) GROUP BY cust_id, item_id HAVING cust_id in (select cust_id from selected_items_tbl where item_id = 1) AND cust_id in (select cust_id from selected_items_tbl where item_id = 2) AND cust_id in (select cust_id from selected_items_tbl where item_id = n)
-------
Each of these tables has other items included. Selected_Items_tbl holds zero to many of the items from the item_tbl for each customer. If I am searching for a customer who has item 1 AND item 2 AND item n, what would be the most efficient query for this? Currently, the above query is what I am working with. However, it seems that we should be able to do this type of search in a single query (without subqueries).
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Sep 27, 2006
I'm trying to get a query to run which looks at completed orders that have not had another paid order in 180 days. The database I'm running it against is very large so I can't get it to complete. Where's what I've got:
select Date =cast(cl1.cl_rundate as datetime(102)),count(cl1.cl_recno) as 'Completed Initials', cl1.cl_status as Status from dbo.vw_Completedorders cl1 where cl1.lob_lineofbusiness = 'aaa'
and cl1.cl_rundate > '20060801' and not exists (
select cl2.cl_company from dbo.vw_Paidorders cl2 where
cl2.lob_lineofbusiness = 'aa'and cl2.cl_company = cl1.cl_order and cl2.cl_rundate > '20060101' and datediff(day,cl2.cl_rundate,cl1.cl_rundate) < 180)
group by cl1.cl_status, cl1.cl_rundate
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Nov 7, 2007
Hi
I have one table (tableDemo) with following structure:
TSID bigint (Primary Key)TskID bigint Sequence bigint Version bigint Frequency varchar(500) WOID bigint DateSchedule datetime TimeStandard real MeterEstimated real MeterLast real Description ntext CreatedBy bigint CreatedDate datetime ModifiedBy bigint ModifiedDate datetime Id uniqueidentifier
I have 8000 records in this table. When I fire simple select command (i.e. select * from tableDemo) it takes more than 120 seconds.
Is there any techniques where I can access all these records within 2-3 seconds ?
Regards,
ND
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Nov 4, 2000
hi, what are the tools that I can use to Optimize the query/ index.
I know that if I am running a query on a table I create index on the fields where I use in the where clause, is this a right thinking.
Someone told me how do I determine what columns should be indexed, I told him the fields that I use in the where clause should be indexed to speed up the process of retrieving the data. ..... is this answer correct. if not please advice the correct one.
Thanks
Ahmed
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Dec 17, 2005
We have SQL Server 2000 and int is an Oracle linked server. I'm trying to run the following query...
SELECT DISTINCT a.auf_nr AS OrderNo,
e.ku_name AS Customer,
d.bestell_dat AS OrdDate,
d.liefer_dat AS DelvDate,
CAST(SUM(b.anz) AS FLOAT) Qty,
CAST(SUM((CAST(c.breite AS FLOAT) / 1000 * CAST(c.hoehe AS FLOAT) / 1000) * b.anz) AS FLOAT) SQM,
CAST(SUM(a.liefer_offen) - (SUM(a.anz) - SUM(b.anz)) AS FLOAT) AvailDelv,
CAST(SUM(a.liefer_anz) AS FLOAT) Delvd,
CAST(SUM(c.sum_brutto*a.anz) AS FLOAT) Value
FROM liorder..LIORDER.AUF_STAT a,
liorder..LIORDER.AUF_LIP_STATUS b,
liorder..LIORDER.AUF_POS c,
liorder..LIORDER.AUF_KOPF d,
liorder..LIORDER.KUST_ADR e
WHERE a.auf_nr = b.auf_nr and
b.auf_nr = c.auf_nr and
c.auf_nr = d.auf_nr and
d.kunr = e.ku_nr and
a.auf_pos = b.auf_pos and
b.auf_pos = c.auf_pos and
b.lip_status = 7 and
c.ver_art !='V' and
a.history = 0 and
a.rg_stat != 2 and
e.ku_name IS not null and
e.ku_vk_ek = 0 and
d.bestell_dat BETWEEN '01/01/2005' and '12/17/2005'
GROUP BY a.auf_nr,
d.liefer_dat,
b.lip_status,
d.bestell_dat,
e.ku_name,
d.kopf_tour,
d.kopf_firma
HAVING CAST(SUM(a.liefer_offen)-(SUM(a.anz)-SUM(b.anz)) AS FLOAT) > 0
..and it takes around 2 minutes to show the results even if the date range is of the same date. I even tried to use an indexed column but I still get the same slow execution time. I even tried to create a UDF so that the WHERE clause would be resolved remotely on the Oracle DB but still the same. Is there anyway I can do it in much more efficient and faster way?
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Nov 4, 2007
Hi there,
I've got a SQL 2005 table(DataTable) with 5.5 million rows and a clustered index on an integer column. The column is a foreign key pointing to another table (LookupTable) that associates the integer with an nvarchar(50) column. Both integer and nvarchar(50) columns are in a clustered index.
I'm running equivalent select statements with slightly different where clauses, and am not seeing the performance similarities I'd expect.
select * from DataTable join LookupTable on DataTable.Integer = LookupTable.Integer
1. Setting the where clause to the nvarchar(50) value on the LookupTable takes 64 seconds.
2. Setting the where clause to Integer = (select integer from LookupTable where nvarchar(50) = 'mysearchstring') takes 61 seconds.
3. Setting the where clause to Integer = 526 takes 1 second.
Is this poor design in SQL, or is it a misconfiguration? I would have expected SQL to modify my query to essentially be #3 in all cases before touching the DataTable, which would cause all three versions to take 1 second.
Thanks,
Jason
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Sep 11, 2005
Hi everyone!
I am parsing a database structed like the following for duplicates.
Code:
keywordnegativeexactbroadphrase
Alpha0.120.36
Alpha0.120.37
Alpha0.120.37
Alpha0.220.37
Alpha0.120.37
Alpha0.120.37
Alpha0.120.37
Beta0.43212
Charlie0.240.31
Delta0.72212
Epsilon410.31
Foxtrot250.22
Grape420.215
Hotel 230.13
Indigo0.3721
Juliet21220.14
Kilroy0.3110.15
Lemon0.2201
Mario0.2502
Nugget0.130.72
Oprah2141
Polo01225
Polo01224
Polo01225
Q-Bert31442
Romeo12100.1
Salty2200.1
Tommy10.30.132.4
Uri10.30.132
Uri20.20.132
Uri20.30.122
Uri20.30.131
Vamprie0.120.1315
Wilco0.210.21
X-Ray00.220
Yeti020.20
Zebra1310
The duplicates that this thread relates to are the kind with duplicate "keyword" entries AND dissimilar field entries; i.e. :
Code:
keyword negative exact broad Phrase
Polo 0 122 4
Polo 0 122 5
I've come up with an SQL query that seems to return all of these duplicates (save one of each type- the 'real', unique entry). However I think I made the query very inefficient. My SQL is very bad; this query will be running over tens of thousands of rows, so if it can be at all optimized I would greatly appreciate your help!
What I have so far is:
Code:
string query1 = "SELECT * FROM TableName" +
" WHERE EXISTS (SELECT NULL FROM TableName" + " b" +
" WHERE b.[keyword]= " + "TableName"+ ".[keyword]" +
" AND b.[negative]<> " + "TableName"+ ".[negative]" +
" ORb.[keyword]= " + "TableName"+ ".[keyword]" +
" ANDb.[exact]<> " + "TableName"+ ".[exact]" +
" ORb.[keyword] = " + "TableName"+ ".[keyword]" +
" ANDb.[broad]<> " + "TableName"+ ".[broad]" +
" ORb.[keyword]= " +"TableName"+ ".[keyword]" +
" ANDb.[phrase]<> "+"TableName"+ ".[phrase]" +
" GROUP BY b.[keyword], b.[broad], b.[exact]" +
" HAVING Count(b.[keyword]) BETWEEN 2 AND 50000)" ;
the algoritm seems to check every column of every row in order to determine a duplicate. Seems straightforward to me, but alas slow...
Is there a better/faster way I can do this? Thanks for you help!
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Jul 20, 2005
I have a DELETE statement that deletes duplicate data from a table. Ittakes a long time to execute, so I thought I'd seek advice here. Thestructure of the table is little funny. The following is NOT the table,but the representation of the data in the table:+-----------+| a | b |+-----+-----+| 123 | 234 || 345 | 456 || 123 | 123 |+-----+-----+As you can see, the data is tabular. This is how it is stored in the table:+-----+-----------+------------+| Row | FieldName | FieldValue |+-----+-----------+------------+| 1 | a | 123 || 1 | b | 234 || 2 | a | 345 || 2 | b | 456 || 3 | a | 123 || 3 | b | 234 |+-----+-----------+------------+What I need is to delete all records having the same "Row" when there existsthe same set of records with a different (smaller, to be precise) "Row".Using the example above, what I need to get is:+-----+-----------+------------+| Row | FieldName | FieldValue |+-----+-----------+------------+| 1 | a | 123 || 1 | b | 234 || 2 | a | 345 || 2 | b | 456 |+-----+-----------+------------+A slow way of doing this seem to be:DELETE FROM XWHERE Row IN(SELECT DISTINCT Row FROM X x1WHERE EXISTS(SELECT * FROM X x2WHERE x2.Row < x1.RowAND NOT EXISTS(SELECT * FROM X x3WHERE x3.Row = x2.RowAND x3.FieldName = x2.FieldNameAND x3.FieldValue <> x1.FieldValue)))Can this be done faster, better, and cheaper?
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Aug 21, 2006
SELECT * FROM
( SELECT TOP 15 * FROM
(SELECT TOP 15 CMDS.STOCKCODE AS CODE,CMDS.STOCKNAME AS NAME,CMDS.Sector AS SEC, CMD7.REFERENCE AS REF,T1.HIGHP AS HIGH,
T1.LOW,T1.B1_CUM AS 'B/QTY', T1.B1_PRICE AS BUY,T1.S1_PRICE AS SELL,
T1.S1_CUM AS 'S/QTY', T1.D_PRICE AS LAST,T1.L_CUM AS LVOL,T1.Chg AS CHG,T1.Chgp AS CHGP, T1.D_CUM AS VOLUME,substring(T1.ST,7,6) AS TIME,
CMDS.SERIAL as SERIAL FROM CMD7,CMDS,CMD4 AS T1 WHERE T1.ST IN
(SELECT max(T2.ST) FROM CMD4 AS T2 ,CMDS WHERE
T1.SERIAL=T2.SERIAL
AND CMDS.SERIAL=T2.SERIAL
AND T2.sd='20060821'
AND CMDS.sd='20060821'
AND T2.L_CUM < '1900'
AND CMDS.sector >='1'
AND CMDS.sector <='47')
AND CMDS.SERIAL=T1.SERIAL AND
CMDS.SERIAL=CMD7.SERIAL AND
CMDS.sd='20060821' AND
CMD7.sd='20060821' AND
T1.sd='20060821' AND
T1.L_CUM < '1900' AND
CMDS.sector >='1' AND
CMDS.sector <='47' ORDER BY T1.D_CUM desc)
AS TBL1 ORDER BY VOLUME asc) AS TBL1 ORDER BY VOLUME desc;
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Aug 30, 2015
I am using the code below to get all the children of a particular product and it is working fine. How to get the particular product's id in the select statement. for example, i need to show 891 in a separate column for all the records returned by the query below.
DECLARE @Hierarchy TABLE (Product_Id INT, Parent_Product_Id INT)
INSERT INTO @Hierarchy VALUES (123, 234)
INSERT INTO @Hierarchy VALUES (234, 456)
INSERT INTO @Hierarchy VALUES (456, 678)
INSERT INTO @Hierarchy VALUES (678, 891)
INSERT INTO @Hierarchy VALUES (891, NULL)
[Code] .....
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Sep 7, 2006
I've just downloaded SQL Server Express (with advanced services) from both the main SQL Server Express website and from MSDN. When I right click on the exe I downloaded and go into properties the Product Version says SQLEVALVER. To me this implies it is an evaluation.
Can I confirm this is just a mistake and if we start to redistribute the product it won't timeout in the future? I am sure it is not an evaluation but just want to make absolutely sure.
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Jan 10, 2008
Hi,
I am new in SQL, I can not solve this case:
I have a product table like this
Name Qty Location
-----------------------------------
Item A 2 Warehouse 1
Item A 5 Warehouse 2
Item B 3 Warehouse 1
Item C 1 Warehouse 1
Item B 6 Warehouse 2
How is the sql command/query/store procedure
to generate result like this?
Name Qty
-----------------
Item A 7
Item B 9
Item C 1
Can anyone help me?
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Jan 16, 2007
I have a transaction table (which contains details of all products on all orders)
and is have a discrepancies table which includes details on products that couldnt been found (hence error in stock count)...
Now I want to write a query returning details of all products from a specfic orders.. pretty simple
SELECT product, description, qty
from TRANSACTIONS
where order_no = 'xxx'
but i also want to add an extra boolean column (true if product is in discrepancies table and false if product is not in discrepancies table...will become checkbox at front end)... im not sure how to write this bit....
I know it would a transaction table LEFT JOIN to discrepancies table, but I do not know how to write syntax to add extra column...
Be garteful for any help :confused:
Thanks
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Feb 11, 2015
Lest Say with File-stream we have a table document where the file-stream column is located, then we have another table called product-document where the productID and the Document-node are both foreign key of the Product and the Document tables respectively. if i want to query the file-stream document for a specific product, i can just join all three tables, but with file-table there is something i probably didn't get as how to query the file table and get a document for a specific product.
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Apr 11, 2012
I am currently working on a website that deals with sales of products. For one of my pages for the website I need it to be able to change the current sales information for a specific product.
The top part of the following code selects the specific product however I cannot get the update query to work.
Code:
$describeQuery = "SELECT p.ID, p.NAME, dt.[Year], dt.[Month], dt.SalesVolume FROM Products p
join
(select ProductCode, sum(SalesVolume) as SalesVolume, [Year], [Month] from MonthlySales
group by ProductCode, [Year], [Month])dt
on dt.ProductCode = p.ID WHERE [NAME] = '$desiredProduct' AND [Year] = '$desiredYear' AND [Month] = '$desiredMonth'";
$editQuery = "UPDATE MonthlySales SET SalesVolume = '$NewSales' WHERE ID = '$desiredProduct' AND Year = '$desiredYear' AND Month = '$desiredMonth'";
$query = sqlsrv_query($link, $describeQuery);
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Aug 4, 2007
Employee Date Enquired Title Company
Bryan Cole 2007-05-01 Recruiter ABC
Bryan Cole 2007-05-15 Recruiter ABC
Bryan Cole 2007-05-21 Recruiter ABC
Bryan Cole 2007-06-15 Recruiter ABC
Bryan Cole 2007-07-01 Recruiter ABC
Bryan Cole 2007-07-30 Recruiter ABC
I have to do row by row date comparisons in a date column. If the date difference is more than 30 days we keep it , otherwise we suppress it. How can we write the query without using cursor so that only the bold rows will come ?
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Nov 7, 2000
What is it mean GHOST in SQL Trace column ?
Thanx in advance.
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Jun 13, 2008
Hi Gurus ..
Could any one create a thread called Tips for the Day and Give any imports and complex query to learn on each and every Day ?
Thanks in Advance
Dana
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Dec 20, 2006
Dear all,I'm designing a system including the database and the securityrepresents the most crucial aspect of the system; hence for thedatabase security i have implemented the following aspects and needyour advise on further aspects or perhaps corrections where by thesystem is web based using asp.net and under iis 6.0 with https; in theasp.net engine side, i have included client-side validations for whatever is inputed and validated against sql injections for postbackforms:The features of security in SQL Server 2005 side i have implemented:1.) Created MACHINEASPNET Account2.) Allowed ASPNET Account to access the DB3.) Explicity denied ASPNET Account all permissions to all tables,functions and views4.) Denied all permissions to the ASPNET user for stored proceduresexcept EXECUTE permissions5.) By Stored procedure creation, WITH ENCRYPTION, EXECUTE AS'MACHINEASPNET' was usedNo SQL was included in the asp.net code except for calling storedproccedures; the policy is to only call stored procedures within theasp.net pages and encrypt the connection strings inside the web.configfile.Kindly, give me some guidelines for better security or discuss with methe security aspects i mentionedRegards
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Feb 29, 2008
hi,
pls help me ,i am going to attend the interview for SQL DBA pls give me a some tips.
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Mar 22, 2004
Somebody can give some tips or hints for speed up my querys and procedures from sql and get more performance, what is best to use, joins o cursors, using cursors can give me more performance?
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Jan 6, 1999
Hi all:
I'm new to replication but I have already set up replication and have seen it
working and failing and have gotten myself out of jams so far but there must
be an easy way to administer it when things don't replicate as expected. I'm
finding that I could easily kill half a day just trying to dig up
information leading to troubleshooting tips. Is there documentation just on
managing this feature. The regular MS Administrator's guide doesn't offer much.
Currently I have a problem that if replication fails on one command I get a
SQL Mail telling me of the problem but does replication continue to the next
command or does it just stop until the problem is fixed? I'm finding that I am
constantly checking the publisher and subscriber databases and verifying if
replication is indeed doing what the msjob_commands table reports. I set the
batch to commit after each transaction instead of every 100.
Help...
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Sep 4, 2007
Hi,
For your day-to-day SQL Server issues like query tuning, optimization, TSQL problems, I am writing the blog called
http://blog.namwarrizvi.com
Some of the latest articles are:
Generating 1 million rows in less than a second
Conditionally add column in the table
Multiple Inserts in one statement
Capture every data operation in SQL Server 2008
100 Nano seconds precision in SQL Server 2008
Represent Trees and Graphs in TSQL
MERGE Statement of SQL Seerver 2008
Return Last n Orders by using APPLY operator
Number padding in TSQL
Microsoft Performance Point Server and Sharepoint
Caching and Recompilation in SQL Server 2005
and many more....
I will really appreciate comments and suggestions.
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