Hello !!
I'm using the sentence NOLOCK for selects, but I have many sentences, Is there any way to set a parameter in the DBMS, to use NOLOCK parameter by default ???? I mean, I don't like to lock any table for selects.
Is It possible ???? How to do It (step by step) ?
Thanks !!
Hi, I need to make a query that, according to the value of a field, returns an specified value.
ie:
TABLE:
Col1
1
0
I need to make a query like:
SELECT (????) FROM TABLE
and if Col1=1 returns 'Assigned' and if Col2=0 it returns 'Unassigned'
So the result from the query for the data above is:
Assigned
Unassigned
Thankx
Hello forum. I address you in order to help me for create a little sentence.
the problem is as:
I have a table "STAMPING" that save data as:
TIMESTAMP------------USER_ID-----TERMINAL_ID----CHIP_ID
19/05/1982 15:30:31 1 1 1
19/05/1982 15:31:29 1 1 1
19/05/1982 15:31:55 1 1 1
19/05/1982 16:25:46 1 1 1
19/05/1982 16:26:23 1 1 1
19/05/1982 16:26:34 1 1 1
19/05/1982 22:23:56 1 1 1
19/05/1982 22:24:23 1 1 1
and I would need to filter them as-->
TIMESTAMP------------USER_ID-----TERMINAL_ID----CHIP_ID
19/05/1982 15:30:31 1 1 1
19/05/1982 15:31:29 1 1 1
19/05/1982 15:31:55 1 1 1
19/05/1982 16:25:46 1 1 1
19/05/1982 16:26:23 1 1 1
19/05/1982 16:26:34 1 1 1
19/05/1982 22:23:56 1 1 1
19/05/1982 22:24:23 1 1 1
20/05/1982 06:10:29 1 1 1
20/05/1982 06:11:51 1 1 1
TIMESTAMP------------USER_ID-----TERMINAL_ID----CHIP_ID
19/05/1982 15:30:31 1 1 1 <<<----
less (difference) --> 00:56:03
19/05/1982 16:26:34 1 1 1 <<<----
19/05/1982 22:24:23 1 1 1 <<<----
less (difference) --> 07:45:00(+/-)
20/05/1982 06:11:51 1 1 1 <<<----
So, I need to delete the "timestamps" the an user has done, which the difference between one stamping and the following one is less than 2 minutes for the inputs for entrances and I need to remove it when the "stampings" which the difference between an one stamping and the previous one is less than 2 minutes for exits.
Can you help me please?
I will appreciate a lot your help.
CNUECOD is primary key in VTA020SAP2 table
TIA
Violation of PRIMARY KEY constraint 'PK_VTA020SAP2'. Cannot insert duplicate key in object 'VTA020SAP2'.
The statement has been terminated.
INSERT INTO VTA020SAP2 SELECT VTA020SAP1.*, NULL as xCLIPRO, NULL AS xPAIS, NULL AS xCONFREI, NULL AS xCONCPER,
NULL AS xMONEDA, NULL AS xFAX, NULL AS xTIPEXP, NULL AS xCASILLA, NULL AS xDIAENTR, NULL AS xPUNVEN,
NULL AS xCIUDAD, NULL AS xREGION, NULL AS xCONDIC, NULL AS xINSPAG, NULL AS xCUMPLE,
NULL AS xPERVIS, NULL AS ESTADO FROM dbo.VTA020SAP1
INNER JOIN VTA020
ON VTA020SAP1.CNRCLI = VTA020.CNRCLI
AND VTA020SAP1.CNRCLI IN (SELECT MAX(VTA020SAP1.CNRCLI) FROM VTA020SAP1
GROUP BY VTA020SAP1.CNUECOD)
AND (not EXISTS
(SELECT VTA020SAP2.* FROM dbo.VTA020SAP2
INNER JOIN VTA020SAP1 ON VTA020SAP1.CNUECOD = VTA020SAP2.CNUECOD
WHERE dbo.VTA020SAP2.CNUECOD = dbo.VTA020SAP1.CNUECOD))
If I want to change the value of a special bit in a column, how to wirte the SQL sentence in sqlserver.
I mean in a column, the value is 'test', then how to change the 's' to 'e' or any other value by just one SQL sentence.
Thanks.
Set @mSQL = 'SELECT Max([AccountID] + [ItemID] + [StorehouseID] + [BINID] + [LotItemID] + Convert(varchar(10),[BalDate],111)) AS [KEY],
AccountID, ItemID, StorehouseID, BINID, LotItemID INTO [xIV_tblStockSumLastDate' + ']
FROM IV_tblIVMaster
WHERE (BalDate<= 'Exec(@mSQL + '''' + @mtxtDate + '''' + ')
GROUP BY ItemID, AccountID, StorehouseID, BINID, LotItemID')
Hi, all friends. I'm using SQL-SERVER 2000.I have a table like this:NIF Name----------------------------------------A-1234 Company1B-123-B1 Company2C-4568 Company4D-453-DF Company5I want delete the symbol "-" in the row "NIF". eg. A-1234 change toA1234, D-453-DF to D453DFSo how can I write the sentence . Should I use the Stored Procedure?Thank you very much!!Simon
View 2 Replies View Relatedi have insert/update SQL sentence, but sometimes there are empty values because there not required in the database so sometimes the sql sentence look this way:
INSERT INTO EquipmentAndPlace (EquipmentID,EquipmentEmdaNo,EquipmentPlace,EquipmentIDForRecognize, EquipmentRemarks,EquipmentLastChecked) VALUES ('3','','2','1','','12/1')
with empty values, but then it doent update in the dataBase-only if all the values appear-
what the solution of it?
Thanks
I have two tables. A table called users (content speaks by it self) and a table called groups.
Since i want every user to be able to be a member of several groups and, of course, a group to have several users i have made a junction table called jt.
The junction table contains userId's and groupId's according to the user-group bindings. The primary key(identity) in the junction table is a int named jtId.
Now i want to take out all posts from the junctiontable and the corrresponding userName (s) from the users-table and the corresponding groupName from the groups-table.
Can somebody please help me to make a SQL command that will di that for me. I have tried with INNER JOIN and several SELECTS in the same command.
Thanks in advance, Greetings from Esben
Hello,
I would like to know how can I change a "not in" clause with the same results in a SQL sentence in order to improve the performance of my SQL sentence.
I am working with SQL Server 2005
Thanks,
jmota
Hi,
I want to add a parameter to the following SQL-sequence. ActivityGroup is the table and I want to select the current activityGroupID in place of XXXXX. Do I need to put this in a stored procedure?
select * from ActivityGroup where cpgActivityGroupID = XXXXX and cgpRegistredFrom > getDate() and cgpRegistredTo < getDate()";
Thanks in advance!
Hi,
I have a project in which I have about 20,000 records in sql database table.
What I would like to do is generate a query that lists all the unique words in a particular field acros the entire table so as to generate a glossary of words.
if we had a table that looked like
ID Description
001 This is the first record
002 This is the second record
003 This is not the first record
and the query was run on the description field, then the result I would like to see is
This
is
the
first
second
not
I hope this makes sense. Any help is appreciated.
Hi All,
I want to give the users the ability to highlight words in sentences on the page in different colors.
Please see link below for an example(watch out for URL wrapping):
http://64.233.161.104/search?q=cache:fKHSRIxERbUJ:www.codeguru.com/columns/DotNet/article.php/c6603/+XML+serialization+in+.net&hl=en
My MASTER table that contains text is very simple:
TEXT_ID INT
TEXT varchar
I was thinking of something like creating another table to keep track of selection criteria:
USER_NAME varchar // keeps track of which user made the selection
TEXT_ID INT // points to the text id in the MASTER table
START_POS INT // start position of the selection
END_POS INT // end position of the selection
COLOR INT // color of the selection
The thing I don't like about this method, is if user(s) have many words higlighted in the sentences, this table may get very large.
I also thought of maybe combining START_POS, END_POS & COLOR into comma delimited entries:
EX: 1:5:240, 25:30:125 // START_POS:END_POS:COLOR
The thing I don't like about this method, the parsing calculations may take a while to execute.
My goal is to stream as much text data as possible and make it as fast as possible. How does Google or any one else do it?
P.S. Having a copy of a MASTER table with HTML tags in TEXT field is not an option.
Thanks,
Vlad
I have to parse a sentence into separate words. This has to be done in a Stored Proc.
If the sentence is: "The sun is rising". Then I want to store the words "The" "sun" "is" "rising" into 4 separate variables. (The separator is a space).
Has someone already written something like this before? I do not want to re-invent the wheel.
Thankx.
KP
CREATE TABLE [dbo].[instructions](
[site_no] [int] NOT NULL,
[instructions] [text] NULL
)
Select top 3 * from instructions
Output
Site_no Instructions
20 Request PIN#510 then proceed
21 Request PIN#987 if wrong request name
22 Request PIN#688 allowed to use only numbers
All text instructions start with “Request PIN#XXX” also after that the text are different for every site_no
I need insert in all site_no rows and after the “Request PIN#XXX” the text “and codeword” keeping the current rest of text
How can I set e REPLACE CAST sentence using something LIKE PIN%%%%
To get these type of results
site_no instructions
----------- ----------------------------------------------------
20 Request PIN#510 and codeword then proceed
21 Request PIN#987 and codeword if wrong request name
22 Request PIN#688 and codeword allowed to use only numbers
the talbe row like this:
ID Name Scoe 11 Tome 20 12 Jack 30 11 Tome 40 12 Jack 10 13 John 10
My query command like this:
Select T1.Id,T1.Name,T2.mathfrom st T1right join(Select Id as Id2,Sum(Math) as Math from St group by id) T2on T1.id=t2.id2where t1.id = t2.id2
While the reuslt is :
Id Name Score
11 Tom 60
11 Tom 60
12 Jake 40
12 Jack 40
13 John 10
I am wonder :the T1 gives a table with six rows, the T2 gives a table with three rows, and I use RIGHT JOIN to connect the two table,the result should be a table with only three rows.I tried INNER JOIN, the result is same.
but why ? please help me !
Is it possible to pass entire where sentence to a store procedure?From app, I'll generate a where sentence like below:
where orderID = '123' and orderCidy='London'
I created a store procedure like below but got an error said that An expression of non-boolean type specified in a context where a condition is expected, near 'END'
CREATE PROCEDURE getorder
@mywhere VARCHAR(100)
AS
BEGIN
SET NOCOUNT ON;
select * from order @mywhere
END
Hi everyone!I am working with Delphi v7 and MS SQLServer.I am trying to insert data in a table with a SQL sentence. Some of thefields of my table are type char or varchar, and they can have nullvalues.What do i have to write in the SQL sentence to insert a null value inthose fields?I tried with '', an empty String, but it doesnt work, the tablesstores an empty String (logical :-)).In the SQLServer GUI you have to press CTRL + 0 to insert a NULLvalue, but how can i tell this to the SQLServer through a SQLSentence?Well, thank you very much.
View 2 Replies View RelatedI was recently told SSRS does not support the ability to underline a portion of text in a sentence. Does anyone know if this is true? Couldn't "text decoration" "underline" and "span" be used to underline the web address in the sample sentence below?
"Please visit our website at: www.abc.com"
Thanks
I have a illegal keyword table name as "Illegal_keyword_Master" where near about 2000 illegal keyword are stored... Now I have a big Sentence(bunch of words)...
If any illegal is keywords is found from "Illegal_keyword_Master" table in that sentence then the sentence is "banned" otherwise the sentence is "OK"....
I need some help to under stand when the right time is for NOLOCK. I work in a small dev group and NOLOCK seams to be a buzz word and others are throwing it in all over for no apparent reason.
I read the thing from http://www.sql-server-performance.com/ and I am sure that our web and SQL servers are about 100x over sized for the application. While are ASP.Net (VB) app may demonstrate some hesitation from time to time I am more inclined to blame poor VB.Net coding techniques before slow SQL. The point being the NOLOCK is being added to SELECTS that are not part of a transaction and were using the SQL data adapter to return datasets or single column values.
Also I am not even sure it’s being used correctly. The OLM has the example:
SELECT au_lname FROM authors WITH (NOLOCK)
However I am seeing it formatted like this:
SELECT au_lname FROM authors (NOLOCK)
I am by no mean an expert, I follow what I read in books or from examples from others. And I have never read in a book go crazy with NOLOCK because it’s the bomb!
Any thoughts? I am trying to learn as much as I can before I raise my hand and say this might be a bad idea.
Thanks
Other than "dirty" reads, what are the cons of using NOLOCK throughout a query?
View 1 Replies View RelatedHi,
I have a job that runs 3 seperate DTS packages.
The first step imports a file and runs successfully.
The second step which is the 2nd DTS package is hanging in the execute mode until I manually stop the job. Apparently,We discovered a bulk insert that is blocking a select statement--both proccesses are within this second DTS package. I tried using the WITH (UNLOCK) on the tables but this DTS package is still failing.
Does anyone have any suggestion? It would be greatly appreciated.
Hi guys,
I am a new user for DB2.
In DB2 V8, i have a table with some no of columns.
table test
col1
col2
col3
col4
Now i want to issue a query like this.
select col1 from test with(NOLOCK) where col1 = <some value>
when i am executing this query on that time i am getting a error message like this...
SQL0158N The number of columns specified for "MT.TEST" is not the
same as the number of columns in the result table. SQLSTATE=42811
Anyone can help me???
i tried to find out.
I did the same thing with SQL server 2000.
I am not facing any problem there.
Thanks & Regards,
Muthu
Paul Randal,
There has been a discussion/debate going on this thread about the benefits and drawbacks of using the NOLOCK hint:
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=67294
It occurred to me that you might know more about this than any of us, or at least be able to point us to a white paper or knowledge base article that explains the subject in more detail. Any light you can shed on the subject would be a big help.
CODO ERGO SUM
is really helpful use "with (nolock)" sentence in selects??
100% useful?? disadvantages?
best regards
Joseph
I have an very long ntext field, made up of many sentences that I append a full stop to every one, I also strip out any line breaks within the text. However I get this error, when I look it up it comes up with "Failed to locate the ending boundary of a sentence."
View 0 Replies View RelatedHello,
Does anyone know if you place NOLOCK after a view in a select statement, if the effects trickle down to the tables in the view? Or does one have to add NOLOCK to each table within the view?
Thanks
Hey guys,
I came across a SQL statement, thought up by a developer, in which two views were joined with the NOLOCK hint:
SELECT v1.xxx, v2.yyy
FROM dbo.vw_SomeView v1 WITH (NOLOCK)
INNER JOIN dbo.vw_SomeOtherView WITH (NOLOCK) ON v1.id = v2.id
The views are not created the NOLOCK hint. So my question is: has the NOLOCK hint any effect here?
I've looked in the BOL and searched on the net but can't find anything on this particular topic.
Lex
PS. Personally I don't like to use views in JOINs. I've seen too many cases in which tables are joined twice just because they are part of both views. Further more I don't like the "random" use of NOLOCK because most people don't seem to understand the implications of it. But this is besides the point of my question ;)
I'm running a heavy SELECT query using WITH (NOLOCK). This still causes other processes trying to INSERT in one of the tables to get blocked.
I thought the locking hint would prevent from blocking other processes?
What will happen if I'm running a query with the NOLOCK hint but the SQL Server has run out of resources?
Thanks!
Hi,
I was sreading about NOLOCK that it could prevent deadlocks but could return data which is not committed yet.
1) Should we use NOLOCK with select statements
2) If the transaction isolation level is set appropriately (e.g. Serializable)in the component (for e.g COM+ component) but NOLOCK is specified in the select then would it return uncommitted data. I mean if the transaction is controlled at hihger level then what will be the Pros and Cons of using NOLOCK.
Thanks
What is the purpose of using WITH(NOLOCK)?
View 3 Replies View Related