How to get result from Query by group of (n) rows ?
- Is cursors the better way (and the only) ?
-Is there something as ROWNUM in Oracle or LIMIT in MySql ?
Example plz !
Thanks.
Alex
I am a newbie to SQL Server.
I have a problem, in filtering the records returned by a query.
I have a table which contains 1 million records, it has a user defined primary key which is of character type.
The problem is i need to filter the output of a select query on the table based on two parameters i send to that query.
The first parameter will be the starting row number and the second one is the ending row number.
I need a procedure to do this.
For Eg:
MyProc_GetRowsFromBigTable(startRowNo,endRowNo) should get me only the rows in the specified range.
Thanks in advance,
Raghavan.S
Hello
I have a report that retrieves its data from Analysis Services. The data includes a count and dollar value of projects against their current status: It looks something similar to
(group1) status1 10 $200,000
(detail) p1 1 $5,000
p2 1 $10,000
.
.
p10 1 $20,000
(group1) status3 5 $90,000
(detail) .
.
(group1) status4 15 $150,000
(detail) .
.
In the report I hide the detail rows. I have a fixed/known number of statuses (in this case 4) and need to show all 4 in the report. eg
(group1) status1 10 $200,000
(detail) p1 1 $5,000
p2 1 $10,000
.
.
p10 1 $20,000
(group1)status2 0 $0
(group1) status3 5 $90,000
(detail) .
.
(group1) status4 15 $150,000
(detail) .
.
ie in this case I need to show status 2 (that doesn't exist in the data set) with zero totals.
Does anyone know if this is possible to get SSRS to display each of the status groups (in a known fixed list) and then match them to the records in the dataset.
As an alternative, if I were using SQL Server I could add rows to the dataset using a union statement. Is there similar functionality using mdx? My mdx skills are very basic.
Thanks
Stewart
Hello SQL gurus!I am trying to write a query that will return a set of continguous rowsfrom a table, and limit the number of rows returned when a maximumtotal has been reached by adding a value in one of the columns.For example, the two columns below represent 2 columns in a table.a 2b 2c 2d 3e 4f 5g 5I want to start at, say "c", and return all the rows after it as longas the sum of the numbers in column 2 (starting at "c") don't exceed10. The result I'm after would be thusc 2d 3e 4....because 2 + 3 + 4 = 9 < 10Any ideas? Many thanks.
View 4 Replies View RelatedI have a query that returns the data about test cases. Â Each test case can have multiple bugs associated to it. Â I would like a query that only returns the test cases that have all their associated bugs status = closed.For instance here is a sample of my data
TestCaseID TestCaseDescription  BugID BugStatus
1 Â Â Â Â Â Â Â Â TestCase1 Â Â Â Â Â Â Â Â Â Â Â 1 Â Â Â Closed
2 Â Â Â Â Â Â Â Â TestCase1 Â Â Â Â Â Â Â Â Â Â Â 2 Â Â Â Open
3 Â Â Â Â Â Â Â Â TestCase2 Â Â Â Â Â Â Â Â Â Â Â 11 Â Â Closed
4 Â Â Â Â Â Â Â Â TestCase2 Â Â Â Â Â Â Â Â Â Â Â 12 Â Â Closed
5 Â Â Â Â Â Â Â Â TestCase2 Â Â Â Â Â Â Â Â Â Â Â 13 Â Â Closed
How can I limit this to only return TestCase2 data since all of that test case's bugs have a status of closed.
Message:
Hi,
Suppose i execute a query,
Select * from emp,
I get 100 rows of result, i want to write a sql query similar to the one available in MySql database where in i can specify the starting row and number of rows of records i want,
something like,
select * from emp LIMIT 10,20
I want all the records from the 10th row to the 20th row.
This would be helpful for me to do paging in the front end , where is i can navigate to the next previous buttons and fetch the corresponding records.
I want to do something like in google, previous next screens.
So I am trying to limit the number of rows fetched from a query.
somethin like,
select * from emp where startRowNum=10 and NoOfRecords = 20
so that i can get rows from 10 to 30.
Has any1 done this, plz let me know.
Cheers,
Prashant.
I have two tables .. in one (containing user data, lets call it u).The important fields are:u.userName, u.userID (uniqueidentifier) and u.workgroupID (uniqueidentifier)The second table (w) has fieldsw.delegateID (uniqueidentifier), w.workgroupID (uniqueidentifier) The SP takes the delegateID and I want to gather all the people from table u where any of the workgroupID's for that delegate match in w. one delegateID may be tied to multiple workgroupID's. I know I can create a temporary table (@wgs) and do a: INSERT INTO @wgs SELECT workgroupID from w WHERE delegateID = @delegateIDthat creates a result set with all the workgroupID's .. this may be one, none or multipleI then want to get all u.userName, u.userID FROM u WHERE u.workgroupIDThis query works on an individual workgroupID (using another temp table, @users to aggregate the results was my thought, so that's included) INSERT INTO @users SELECT u.userName,u.userID FROM tableU u LEFT JOIN tableW w ON w.workgroupID = u.workgroupID WHERE u.workgroupID = @workGroupIDI'm trying to avoid looping or using a CURSOR for the performance hit (had to kick the development server after one of the cursor attempts yesterday)Essentially what I'm after is: SELECT u.userName,u.userID
FROM tableU u
LEFT JOIN tableW w ON w.workgroupID = u.workgroupID
WHERE u.workgroupID = (SELECT workgroupID from w WHERE delegateID = @delegateID) ... but that syntax does not work and I haven't found another work around yet.TIA!
I have used this mysql code in my programm before:
select * from address order by vorname asc limit 0, 10
It works fine. But now I want to use sql server, and it doesn't recognize the term limit.
So I have found out that I can use top instead.
I have changed my code into this:
select top 0 * from (select top 10* from address order by vorname) order by vorname asc
But it gives me an error message:
wrong syntax near the word Order.
Can anyone give me a solution?
Thank you.
Hi everyone,
I am looking for a function in MSSQL that performs similar to the LIMIT function in MySQL. Here is the LIMIT function's definition:
The LIMIT clause can be used to constrain the number of rows returned by the SELECT statement. LIMIT takes one or two numeric arguments, which must be integer constants.
With two arguments, the first argument specifies the offset of the first row to return, and the second specifies the maximum number of rows to return. The offset of the initial row is 0 (not 1):
mysql> SELECT * FROM table LIMIT 5,10; # Retrieve rows 6-15
I am aware of TOP and SET ROWCOUNT functions in MSSQL but neither provide the Offset functionality.
Any help would be appreciated,
Piet
Hi,
View 9 Replies View RelatedI am looking for the MS SQL equivalent of MySQL LIMIT.
I know that the code in MySQL is
SELECT col_name FROM tbl_name LIMIT x,y
where x = the starting row and y = the offset
E.g. SELECT movie_name FROM my_movies LIMIT 10,5
This will give me the records from 11-15
I would like to know what is the MS SQL equivalent for the above?
Hi groupmates,
In MySQL, we can use limit for our selection. E.g.
select * from mytable limit 10, 20
means selecting [20] records of all information from the table [mytable] from the [10]th record
But in MS SQL, what can we do? Please help.
I am writing PHP to retrieve small data from a large volume of database. Please help
-stan
Hi,
I need the equivalent for below mysql query :
select *from test limit 5, 20
I know that the below is possible in SQL Server :
select top 20 * from test where column1 not in (select top 5 column1 from test).
But my problem is I want a generic solution wherein I will not be aware of the columns available within the table.
Please advice,
- Mira
In mySQL for example i could have:
ORDER BY ID DESC LIMIT 5,25
where it would start from 5'th row found and return up to 25 rows.
How do i achieve the same in Transact-SQL? The LIMIT 5, 25 part.
My site have a complicated search, the search give the results in two stages- the first one giving the number of results in each section:
"In the forums there is X results for the word X
In the articles there is X results...."
And when the user click one of those lines, the list shows the specific results in that section.
My problem is that I don't know how to calculate the first part, for now I use dataset, and table.rows.count to show the number of results in each section. Since my site have more then ten, it looks like a great waste to fill such large dataset (in some words it can be thousands of rows in each section) only for getting the number of rows…
Are there is a sql procedure or key word that will give me only the number of results (the number of times that specific word showing in the columns?)
Great thanks
hey all,
i want to know Equivalent of "LIMIT" of MySQL in SQL Server 2005?
in mysql we can direclty get data using LIMIT clause.
my question is how to do this in sql server 2005?
thanks.
Hi there, it seems the search feature refuses to work so i am posting a question which I am sure has been answered :)
What is the best way to get the LIMIT command functionality in SQL SERVER?
I am making an ASP.NET page, and am unsure how to go about tabbing through 100s of results.
Many thanks,
Taz
Working in Sql Server 2005,got 3 different table.Need to fetch the list of persons.A person can belong to different categories.When i am using inner join
on tables i am getting the duplicate rows because a perosn can belong to different categories.I want that there should be only onoe
row for the person and the different categories he belongs to can come up in single field as comma sepatated string
Now the results are like this:
firstname lastname adress category
abc xyz aaa a
abc xyz aaa b
abc xyz aaa c
I want like below:
abc xyz aaa a,b,c
I am thinking of using cursors in the stored procedure.Can you provide me the solution of this including the stored procedure..
I worked with someone else to create a query that gives us the age of a stock. How long it has been in the warehouse since the Purchase order date (without completely selling out). It does exactly what I want, the problem is that it only accepts 1 row as a result.
The error message I get is:
quote:Msg 512, Level 16, State 1, Line 4
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
So my question is; can this code be modified to pass it multiple SKUS and run a report on every item currently in stock?
SELECT TOP 1
@skuVar, CAST(GETDATE()-ReceivedOn AS INT) AS 'Age'
FROM
(SELECT pir.id AS id,aggregateQty AS aggregateQty,-qtyreceived as qtyreceived, (aggregateQty - qtyreceived) AS Diff, ReceivedOn AS ReceivedOn
,(
SELECT SUM (PurchaseItemReceive.qtyreceived)
FROM bvc_product pp
[code].....
I use Microsoft SQL 2008
I have 3 tables:
Â
TABLE [dbo].[Tbl_Products](
[Product_ID] [int] IDENTITY(1,1) NOT NULL,
[Product_Name] [nvarchar](50) NOT NULL,
[Catagory_ID] [int] NOT NULL,
[Entry_Date] [date] NOT NULL,
[Code] ....
I am using this query to get ( Product name from tbl_products , Buy Price - Total Price- Total Quantity from Tbl_Details )
But am getting a multiple result if the order purchase has more than 1 item :
SELECT DISTINCT B.Product_Name,A.AllPieceBoxes,
A.BuyPrice,A.TotalPrice,A.BuyPrice
FROM
Tbl_Products B INNER JOIN Tbl_PurchaseHeader C
ON C.ProductId=B.Product_ID INNER JOIN Tbl_PurchaseDetails A
ON A.PurchaseOrder=C.purchaseOrder
WHERE A.PurchaseOrder=3
Hi,
In MySQL,
"GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.1.1' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;"
This gives the permission to 'root' user from '192.168.1.1'. Another user or another ip couldn't connect to this server.
In SQL Server 2005 Express, can I implement like above query statement?
Hi,
I have posted this in the Experts Forum so I have put replies to questions in here as well (Hence the long post!!). Hope someone here can help!!
I am having trouble with a T-SQL query. I have three tables in a join and I need to limit the results returned by query using a group by.
All of the fields in the result group are the same except for two fields, a date field and a varchar field. What I want to achieve is to return the row that has the latest date, and I need the varchar field as that is the information I am after. The problem is if I include the varchar field in the group by, it is returned as a separate group, if I do not included it in the group by, Server: Msg 8120 (aggregate fn / group by) error occurs!
Any ideas how to get around this?
Sample code and results below:
Query:
select distinct s.id, [active-from], code, s.desc, [scheme], [market-id], [market-id]+'CODE'
from [coded] c join sec s on s.id = c.id
join [mkt-security] m on m.id = s.id
where ([market-id] = [scheme] or [market-id]+'CODE' = [scheme])
Group by s.id, [active-from], code, s.desc, [scheme], [market-id], [market-id]+'CODE'
Sample results:
id : [active-from] : code : desc : [scheme] : [market-id]
--------------------------------------------------------------------------------------------------------------------------
10449 :1993-07-21 : ADV : PXX Group Limited : ABCD : ABCD : ABCDCODE
10449 :2003-03-27 : PVO : PXX Group Limited : ABCD : ABCD : ABCDCODE
10469 :1986-10-24 : AQL : CO Ordinary Shares : DEFG CODE : DEFG : DEFG CODE
10469 :2000-10-02 : AQL : CO Ordinary Shares : DEFG CODE : DEFG : DEFG CODE
10469 :2001-09-21 : CER : CO Ordinary Shares : DEFG CODE : DEFG : DEFG CODE
The result I want to achieve is to only return these two rows:
10449 :2003-03-27 : PVO : PXX Group Limited : ABCD : ABCD : ABCDCODE
10469 :2001-09-21 : CER : CO Ordinary Shares : DEFG CODE: DEFG : DEFG CODE
i.e. those with the latest [active-from] date, but I must have the corresponding code value.
I have tried a correlated sub query on the [active-from] field, but it is possible to have different id’s with the same [active-from] date so it did not work.
The primary key for the [coded] table is the combination of [active-from], code and [scheme]. The tables are truncated and then imported back into the SQL database from a Progress database daily, so restructuring the table(s) is not a possibility.
I have rewritten the query to "AND [ACTIVE_FROM] in (SELECT MAX([ACTIVE_FROM]) FROM CODED AND MAX([CODE]) = S.[CODE] AND MAX([SCHEME]) = S.[SCHEME]", (Which I think is the T-SQL for you query), but it returned the error "An aggregate may not appear in the WHERE clause unless it is in a subquery contained in a HAVING clause or a select list, and the column being aggregated is an outer reference."
Also I think the query need to use a Group by as the results I need returned are those with the latest [ACTIVE_FROM] date WITHIN the group of [ID]and [MARKET-ID]. I can't think of any conditions where I can filter the results in the where clause.
The [ ] in the T-SQL is to identify table names as some of the table names (from the Progress db) use characters (the "-") that are unsupported for table names in T-SQL.
I am using the group by as I want to return specific groups of results ( [ID] and [MARKET-ID] ), that have the latest active-from date. I have made a change to that posted before to illustrate:
All results:
id : [active-from] : code : desc : [scheme] : [market-id] : [market-id]+’CODE’
10449 :1993-07-21 : ADV : PXX Group Limited : ABCD : ABCD : ABCDCODE
10449 :2003-03-27 : PVO : PXX Group Limited : ABCD : ABCD : ABCDCODE
10769 :1986-10-24 : AQL : CO Ordinary Shares : WXYZ CODE : WXYZ : WXYZ CODE
10769 :2000-10-02 : AQL : CO Ordinary Shares : DEFG CODE : DEFG : DEFG CODE
10769 :2001-09-21 : CER : CO Ordinary Shares : DEFG CODE : DEFG : DEFG CODE
The result I want to achieve is to only return these three rows:
10449 :2003-03-27 : PVO : PXX Group Limited : ABCD : ABCD : ABCDCODE
10769 :2001-09-21 : CER : CO Ordinary Shares : DEFG CODE: DEFG : DEFG CODE
10769 :1986-10-24 : AQL : CO Ordinary Shares : WXYZ CODE : WXYZ : WXYZ CODE
The reason the last row needs to be returned is that it has a different market id to the other row, despite its active-from date being earlier.
I have tried the self join earlier, but it would then only return 1 of the rows that have an id of 10769!!
Hope this makes sense!!
Cheers,
Guytz
Hi,
Please help me with an SQL Query that fetches all the records from the three tables but a unique record for each forum and topicid with the maximum lastpostdate. I have to bind the result to a GridView.Please provide separate solutions for SqlServer2000/2005.
I have three tables namely – Forums,Topics and Threads in SQL Server2000 (scripts for table creation and insertion of test data given at the end). Now, I have formulated a query as below :-
SELECT ALL f.forumid,t.topicid,t.name,th.author,th.lastpostdate,(select count(threadid) from threads where topicid=t.topicid) as NoOfThreads
FROM
Forums f FULL JOIN Topics t ON f.forumid=t.forumid
FULL JOIN Threads th ON t.topicid=th.topicid
GROUP BY t.topicid,f.forumid,t.name,th.author,th.lastpostdate
ORDER BY t.topicid ASC,th.lastpostdate DESC
Whose result set is as below:-
forumid
topicid
name
author
lastpostdate
NoOfThreads
1
1
Java Overall
x@y.com
2008-01-27 14:48:53.000
2
1
1
Java Overall
a@b.com
2008-01-27 14:44:29.000
2
1
2
JSP
NULL
NULL
0
1
3
EJB
NULL
NULL
0
1
4
Swings
p@q.com
2008-01-27 15:12:51.000
1
1
5
AWT
NULL
NULL
0
1
6
Web Services
NULL
NULL
0
1
7
JMS
NULL
NULL
0
1
8
XML,HTML
NULL
NULL
0
1
9
Javascript
NULL
NULL
0
2
10
Oracle
NULL
NULL
0
2
11
Sql Server
NULL
NULL
0
2
12
MySQL
NULL
NULL
0
3
13
CSS
NULL
NULL
0
3
14
FLASH/DHTLML
NULL
NULL
0
4
15
Best Practices
NULL
NULL
0
4
16
Longue
NULL
NULL
0
5
17
General
NULL
NULL
0
On modifying the query to:-
SELECT ALL f.forumid,t.topicid,t.name,th.author,th.lastpostdate,(select count(threadid) from threads where topicid=t.topicid) as NoOfThreads
FROM
Forums f FULL JOIN Topics t ON f.forumid=t.forumid
FULL JOIN Threads th ON t.topicid=th.topicid
GROUP BY t.topicid,f.forumid,t.name,th.author,th.lastpostdate
HAVING th.lastpostdate=(select max(lastpostdate)from threads where topicid=t.topicid)
ORDER BY t.topicid ASC,th.lastpostdate DESC
I get the result set as below:-
forumid
topicid
name
author
lastpostdate
NoOfThreads
1
1
Java Overall
x@y.com
2008-01-27 14:48:53.000
2
1
4
Swings
p@q.com
2008-01-27 15:12:51.000
1
I want the result set as follows:-
forumid
topicid
name
author
lastpostdate
NoOfThreads
1
1
Java Overall
x@y.com
2008-01-27 14:48:53.000
2
1
2
JSP
NULL
NULL
0
1
3
EJB
NULL
NULL
0
1
4
Swings
p@q.com
2008-01-27 15:12:51.000
1
1
5
AWT
NULL
NULL
0
1
6
Web Services
NULL
NULL
0
1
7
JMS
NULL
NULL
0
1
8
XML,HTML
NULL
NULL
0
1
9
Javascript
NULL
NULL
0
2
10
Oracle
NULL
NULL
0
2
11
Sql Server
NULL
NULL
0
2
12
MySQL
NULL
NULL
0
3
13
CSS
NULL
NULL
0
3
14
FLASH/DHTLML
NULL
NULL
0
4
15
Best Practices
NULL
NULL
0
4
16
Longue
NULL
NULL
0
5
17
General
NULL
NULL
0 I want all the rows from the Forums,Topics and Threads table and the row with the maximum date (the last post date of the thread) as shown above.
The scripts for creating the tables and inserting test data is as follows in an already created database:-
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK__Topics__forumid__79A81403]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1)
ALTER TABLE [dbo].[Topics] DROP CONSTRAINT FK__Topics__forumid__79A81403
GO
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK__Threads__topicid__7C8480AE]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1)
ALTER TABLE [dbo].[Threads] DROP CONSTRAINT FK__Threads__topicid__7C8480AE
GO
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Forums]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[Forums]
GO
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Threads]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[Threads]
GO
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Topics]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[Topics]
GO
CREATE TABLE [dbo].[Forums] (
[forumid] [int] IDENTITY (1, 1) NOT NULL ,
[name] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[description] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[Threads] (
[threadid] [int] IDENTITY (1, 1) NOT NULL ,
[topicid] [int] NOT NULL ,
[subject] [varchar] (100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[replies] [int] NOT NULL ,
[author] [varchar] (100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[lastpostdate] [datetime] NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[Topics] (
[topicid] [int] IDENTITY (1, 1) NOT NULL ,
[forumid] [int] NULL ,
[name] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL ,
[description] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Forums] ADD
PRIMARY KEY CLUSTERED
(
[forumid]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Threads] ADD
PRIMARY KEY CLUSTERED
(
[threadid]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Topics] ADD
PRIMARY KEY CLUSTERED
(
[topicid]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Threads] ADD
FOREIGN KEY
(
[topicid]
) REFERENCES [dbo].[Topics] (
[topicid]
)
GO
ALTER TABLE [dbo].[Topics] ADD
FOREIGN KEY
(
[forumid]
) REFERENCES [dbo].[Forums] (
[forumid]
)
GO
------------------------------------------------------
insert into forums(name,description) values('Developers','Developers Forum');
insert into forums(name,description) values('Database','Database Forum');
insert into forums(name,description) values('Desginers','Designers Forum');
insert into forums(name,description) values('Architects','Architects Forum');
insert into forums(name,description) values('General','General Forum');
insert into topics(forumid,name,description) values(1,'Java Overall','Topic Java Overall');
insert into topics(forumid,name,description) values(1,'JSP','Topic JSP');
insert into topics(forumid,name,description) values(1,'EJB','Topic Enterprise Java Beans');
insert into topics(forumid,name,description) values(1,'Swings','Topic Swings');
insert into topics(forumid,name,description) values(1,'AWT','Topic AWT');
insert into topics(forumid,name,description) values(1,'Web Services','Topic Web Services');
insert into topics(forumid,name,description) values(1,'JMS','Topic JMS');
insert into topics(forumid,name,description) values(1,'XML,HTML','XML/HTML');
insert into topics(forumid,name,description) values(1,'Javascript','Javascript');
insert into topics(forumid,name,description) values(2,'Oracle','Topic Oracle');
insert into topics(forumid,name,description) values(2,'Sql Server','Sql Server');
insert into topics(forumid,name,description) values(2,'MySQL','Topic MySQL');
insert into topics(forumid,name,description) values(3,'CSS','Topic CSS');
insert into topics(forumid,name,description) values(3,'FLASH/DHTLML','Topic FLASH/DHTLML');
insert into topics(forumid,name,description) values(4,'Best Practices','Best Practices');
insert into topics(forumid,name,description) values(4,'Longue','Longue');
insert into topics(forumid,name,description) values(5,'General','General Discussion');
insert into threads(topicid,subject,replies,author,lastpostdate) values (1,'About Java Tutorial',2,'a@b.com','1/27/2008 02:44:29 PM');
insert into threads(topicid,subject,replies,author,lastpostdate) values (1,'Java Basics',0,'x@y.com','1/27/2008 02:48:53 PM');
insert into threads(topicid,subject,replies,author,lastpostdate) values (4,'Swings',0,'p@q.com','1/27/2008 03:12:51 PM');
In select query, how can i limit sequence upto 5 and get result like below?
Rec_ID CompanySequence#
123ABC11
124ABC22
125ABC33
126ABC44
127ABC55
[Code] .....
I have a package with an input column that is varchar(8000).
I want to strip the first byte off of this column and put it in one result column and the remainder of the field I want to go to a second column. If the input column is an empty string, I want to return NULL.
Pulling the first byte off works fine, no issues, however putting the remainder of the input column into an output column is giving me a little trouble.
If I use this expression:
LEN(FLD1) == 0 ? NULL(DT_WSTR,1) : SUBSTRING(FLD1, 2, LEN(FLD1) - 1))
I get an error that says my expression evaluates to a string of greater than 4000 bytes.
If I do this instead:
LEN(FLD1) == 0 ? NULL(DT_WSTR,1) : RTRIM(SUBSTRING(FLD1, 2, 7999))
The expression passes muster but I get the warning that I will be truncating the column at 4000 bytes.
In actuality, I don't care if the result column is truncated after 4000 bytes. I find the second solution to be a bit clunky and I'm wondering if anyone can give me a reason why the first solution won't evaluate but the second will?
Hi,
I have a problem to get the following query going which works fine in MySQL:
SELECT MAX(id), col2, col3, col4 FROM mytable GROUP BY col3
So, what I want is to select the row with the highest ID from a group of rows with the same value in col3. How would that be done in T-SQL?
Thanks,
Tom
I set up a connection to mysql using ADO.NET's ODBC Data Provider. And I'm running a simple query to return one table's maximum ID(int32 unsigned). There is no problem to achieve that.
But when I bind the result to a variable and excute task. It gives out error message: "An error occurred while assigning a value to variable "MaxAuditLogID": "Result binding by name "MaxID" is not supported for this connection type. "
I tried to change the type of variable around but with no luck.
Could anyone help with this issue? Thanks!
I have a query in MySQL which needs to be translated to an equivalent in MSSQL Server. The query uses a LIMIT clause with an offset.
select * from test LIMIT 10,5
(meaning from the 10th row containing 5 rows in the result set)
How can we port the same logic to SQL Server ? I know TOP can retrieve top n rows but how can we specify the offset ?
Any help is appreciated !
I'm new to MSSQL 2005 and want to get a summary of a log table. I want to count all the rows for each date based on a DATETIME field called 'post_date' that holds the date and time of each record's creation.
this is the best I can come up with:
Code:
SELECT
DISTINCT(LEFT(post_date,11)) AS post_date, COUNT(DISTINCT(LEFT(post_date,11))) AS total_posts
FROM log_directory_contacts
GROUP BY post_date
The results show each date but the count column ('total_posts') returns '1' for every row even when I know their are more than 1 record on that date.
What am I doing wrong? Thanks!
Is there a way to limit the number of rows returned by a SqlDataReader? I know I can do it by modifying the Stored Procedure, but I'd rather not modify a procedure that is used in multiple apps. I'm hoping there is something easy like setting SqlDataReader.RowsReturned = 100, but that might be too easy to hope for.
View 10 Replies View RelatedThere may/may not be an upper limit for the number of rows in a table, but is there any performance-related limit?
I'm designing a database that stores results that have been acquired from a number of devices. Each device provides a set of data measurements every 10 minutes. Therefore each year a device will produce 52000 sets of results.
If I design a table to store a row for each set of measurements from a device (PK is based on the timestamp and the deviceID), and if there are 100 devices recording for 5 years, there will be 52000x100x5 rows. Would I get a performance increase by separating this data into one table per year? Perhaps the year could be appended to the table name to identify the particular tables.
A secondary issue is some devices can also be configured to produce a different set of measurements every 10 seconds. In this case there will be hundreds of millions of rows over a 5 year period. Therefore I am considering bulking the results into an array for a 10 minute period, and storing this array as a blob each 10 minutes. Is this going to be faster or slower than having hundreds of millions of rows?
Thanks in advance for any advice,
Mark.
Hi,
Here's my problem.
I have an Area Chart, and I need to plot more than 300,000 records. Problem is RS cannot seem to handle this huge dataset. It would retrieve for 20mins, then after that it will just have an error "Internet Explorer cannot display the webpage". I am not encountering this if I just have a few records to plot. Please help
Hallo!I have small or big problem.I want creat Store Procedurs whit limit rows.For example I need rows from 100 to 200.--Select * from tableHow I doing best way.
View 1 Replies View Related