Easy Way To Reference The Next/previous Row?
Sep 28, 2007
Good morning,
I'm trying to use an existing SQL table to calculate the labour value of products being manufactured.
I was hoping to use a CASE statement with the logic; If the part number of the next row is equal to the part number of current row and the operation number of the next row is greater that the operation number of the current row then take the labour value of this row and add it to the labour value of the next row - does that make sense?
However, to do this I need to be able to query the next (or previous) row of data in the table and I don't know if this is possible.
If anyone knows a simple way (I'm not exactly a SQL whizkid) to do this I'd be most appreciative of your help and advice.
Many thanks,
Paul
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Mar 31, 2015
I have a query that shows me a list of what employees that are on site assuming that employee badged in correctly. My problem is I need to know when an employee has two entries in a row that are "In" without have an "Out" entry.
For example, if John badges in at 8:00 Am and leaves without badging out, when he arrives the next day at 8:00 AM and badges in the system simply would show him as in with no record of him ever leaving correctly.
I am not sure how to return the correct result. Can I formulate a query that would display a Who's In list where the previous entry was NOT and Out?
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Jun 20, 2006
I am doing some calculations with a table and would like to know how to reference a previous row without having to alter the dates in a query at the start of each month.
For example I have to find a percentage change for a series of values. The table has three columns, is based on end of month dates, and the "return" column is the calculated column where the value is. In the example the return value for date 2006-04-30 is Index of (2006-04-30/ Index 2006-03-31)-1.
Date Index return
2006-03-31 6535 .05130
2006-04-30 6949.29 .06333
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Jun 1, 2006
My question is simple, I'd like to do something I do in Jet ANSI-89 SQL. Mind you I'm just adding numbers here - they are not actual columns in 'SomeTable'
SELECT 1 AS A, 2 AS B, A+B AS C
FROM SomeTable
The Jet engine evaluates and does arithmetic on the Aliased column names - handy when they contain their own functions. The resultset would show:
A B C
1 2 3
However from what I can tell SQL Server 2005 is not picking this up. Is their an equivalent?
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Sep 10, 2013
Need getting a query which I will get previous year, previous month first day everytime i run the query.
Ex: If i run the script on 9/10/2013 then result should be 8/1/2012. (MM/DD/YYYY)
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Sep 10, 2014
I am using vs 2010 to write my dtsx import scripts.I use a script component as a source to create a flat file destination file.Everything have been working fine,but then my development machine crashed and we have to install everything again.Now when i use the execute package utility to test my scripts i get the following error:
Error system.NullReferenceException: Object refrence not set to an instance reference.
In PreExecute section
TextReader = new system.io.streamreader(" file name")
In the CreateNewOutputRows:
dim nextLine as string
nextLine = textReader.ReadLine
[code]...
is there something which i did not install or what can be the error?
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May 10, 2006
Hi
I am developing a scientific application (demographic forecasting) and have a situation where I need to update a variety of rows, say the ith, jth and kth row that meets a particular condition, say, x.
I also need to adjust rows, say mth and nth that meet condition , say y.
My current solution is laborious and has to be coded for each condition and has been set up below (If you select this entire piece of code it will create 2 databases, each with a table initialised to change the 2nd,4th,8th and 16th rows, with the first database ignoring the condition and with the second applying the change only to rows with 'type1=1' as the condition.)
This is an adequate solution, but if I want to change the second row meeting a second condition, say 'type1=2', I would need to have another WITH...SELECT...INNER JOIN...UPDATE and I'm sure this would be inefficient.
Would there possibly be a way to introduce a rank by type into the table, something like this added column which increments for each type:
ID
Int1
Type1
Ideal Rank by Type
1
1
1
1
2
1
1
2
3
2
1
3
4
3
1
4
5
5
1
5
6
8
2
1
7
13
1
6
8
21
1
7
9
34
1
8
10
55
2
2
11
89
1
9
12
144
1
10
13
233
1
11
14
377
1
12
15
610
1
13
16
987
2
3
17
1597
1
14
18
2584
1
15
19
4181
1
16
20
6765
1
17
The solution would then be a simple update based on an innerjoin reflecting the condition and rank by type...
I hope this posting is clear, albeit long.
Thanks in advance
Greg
PS The code:
USE
master
GO
CREATE DATABASE CertainRowsToChange
GO
USE CertainRowsToChange
GO
CREATE TABLE InitialisedValues
(
InitialisedValuesID int identity(1 ,1) NOT NULL PRIMARY KEY,
Int1 int NOT NULL
)
GO
CREATE PROCEDURE Initialise
AS
BEGIN
INSERT INTO InitialisedValues (Int1 )
SELECT 2
INSERT INTO InitialisedValues (Int1 )
SELECT 4
INSERT INTO InitialisedValues (Int1 )
SELECT 8
INSERT INTO InitialisedValues (Int1 )
SELECT 16
END
GO
EXEC Initialise
/*=======================================================*/
CREATE TABLE AllRows
(
AllRowsID int identity(1 ,1) NOT NULL PRIMARY KEY,
Int1 int NOT NULL
)
GO
CREATE TABLE RowsToChange
(
RowsToChangeID int identity(1 ,1) NOT NULL PRIMARY KEY,
Int1 int NOT NULL
)
GO
CREATE PROCEDURE InitialiseRowsToChange
AS
BEGIN
INSERT INTO RowsToChange (Int1 )
SELECT 2
INSERT INTO RowsToChange (Int1 )
SELECT 4
INSERT INTO RowsToChange (Int1 )
SELECT 8
INSERT INTO RowsToChange (Int1 )
SELECT 16
END
GO
EXEC InitialiseRowsToChange
GO
CREATE PROCEDURE PopulateAllRows
AS
BEGIN
INSERT INTO AllRows (Int1 )
SELECT 1
INSERT INTO AllRows (Int1 )
SELECT 1
INSERT INTO AllRows (Int1 )
SELECT 2
INSERT INTO AllRows (Int1 )
SELECT 3
INSERT INTO AllRows (Int1 )
SELECT 5
INSERT INTO AllRows (Int1 )
SELECT 8
INSERT INTO AllRows (Int1 )
SELECT 13
INSERT INTO AllRows (Int1 )
SELECT 21
INSERT INTO AllRows (Int1 )
SELECT 34
INSERT INTO AllRows (Int1 )
SELECT 55
INSERT INTO AllRows (Int1 )
SELECT 89
INSERT INTO AllRows (Int1 )
SELECT 144
INSERT INTO AllRows (Int1 )
SELECT 233
INSERT INTO AllRows (Int1 )
SELECT 377
INSERT INTO AllRows (Int1 )
SELECT 610
INSERT INTO AllRows (Int1 )
SELECT 987
INSERT INTO AllRows (Int1 )
SELECT 1597
INSERT INTO AllRows (Int1 )
SELECT 2584
INSERT INTO AllRows (Int1 )
SELECT 4181
INSERT INTO AllRows (Int1 )
SELECT 6765
END
GO
EXEC PopulateAllRows
GO
SELECT * FROM AllRows
GO
WITH Temp(OrigID)
AS
(
SELECT OrigID FROM
(SELECT Row_Number() OVER (ORDER BY AllRowsID Asc ) AS RowScore, AllRowsID AS OrigID, Int1 AS OrigValue FROM Allrows) AS FromTable
INNER JOIN
RowsToChange AS ToTable
ON FromTable.RowScore = ToTable.Int1
)
UPDATE AllRows
SET Int1=1000
FROM
Temp as InTable
JOIN Allrows as OutTable
ON Intable.OrigID = OutTable.AllRowsID
GO
SELECT * FROM AllRows
GO
USE
master
GO
CREATE DATABASE ComplexCertainRowsToChange
GO
USE ComplexCertainRowsToChange
GO
CREATE TABLE InitialisedValues
(
InitialisedValuesID int identity(1 ,1) NOT NULL PRIMARY KEY,
Int1 int NOT NULL
)
GO
CREATE PROCEDURE Initialise
AS
BEGIN
INSERT INTO InitialisedValues (Int1 )
SELECT 2
INSERT INTO InitialisedValues (Int1 )
SELECT 4
INSERT INTO InitialisedValues (Int1 )
SELECT 8
INSERT INTO InitialisedValues (Int1 )
SELECT 16
END
GO
EXEC Initialise
/*=======================================================*/
CREATE TABLE AllRows
(
AllRowsID int identity(1 ,1) NOT NULL PRIMARY KEY,
Int1 int NOT NULL,
Type1 int NOT NULL
)
GO
CREATE TABLE RowsToChange
(
RowsToChangeID int identity(1 ,1) NOT NULL PRIMARY KEY,
Int1 int NOT NULL,
Type1 int NOT NULL
)
GO
CREATE PROCEDURE InitialiseRowsToChange
AS
BEGIN
INSERT INTO RowsToChange (Int1,Type1 )
SELECT 2, 1
INSERT INTO RowsToChange (Int1,Type1 )
SELECT 4, 1
INSERT INTO RowsToChange (Int1,Type1 )
SELECT 8, 1
INSERT INTO RowsToChange (Int1,Type1 )
SELECT 16, 1
END
GO
EXEC InitialiseRowsToChange
GO
CREATE PROCEDURE PopulateAllRows
AS
BEGIN
INSERT INTO AllRows (Int1, Type1 )
SELECT 1, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 1, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 2, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 3, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 5, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 8, 2
INSERT INTO AllRows (Int1, Type1 )
SELECT 13, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 21, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 34, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 55, 2
INSERT INTO AllRows (Int1, Type1 )
SELECT 89, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 144, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 233, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 377, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 610, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 987, 2
INSERT INTO AllRows (Int1, Type1 )
SELECT 1597, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 2584, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 4181, 1
INSERT INTO AllRows (Int1, Type1 )
SELECT 6765, 1
END
GO
EXEC PopulateAllRows
GO
SELECT * FROM AllRows
GO
WITH Temp(OrigID)
AS
(
SELECT OrigID FROM
(SELECT Row_Number() OVER (ORDER BY AllRowsID Asc ) AS RowScore, AllRowsID AS OrigID, Int1 AS OrigValue FROM Allrows WHERE Type1=1) AS FromTable
INNER JOIN
RowsToChange AS ToTable
ON FromTable.RowScore = ToTable.Int1
)
UPDATE AllRows
SET Int1=1000
FROM
Temp as InTable
JOIN Allrows as OutTable
ON Intable.OrigID = OutTable.AllRowsID
GO
SELECT * FROM AllRows
GO
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Dec 22, 2007
how can i do this
search between 2 rows
day before Last day of the Previous Month + day Last day of the Previous Month"
Code BlockSELECT empid, basedate, unit_date, shift, na
FROM dbo.empbase
WHERE (basedate = DATEADD(d, - 2, DATEADD(mm, DATEDIFF(m, 0, GETDATE()), 0))) AND (shift = 5)
AND
(basedate = DATEADD(d, - 1, DATEADD(mm, DATEDIFF(m, 0, GETDATE()), 0))) AND (shift = 1)
TNX
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Jun 9, 2004
I'm banging my head against the wall. It's probably pretty simple so here goes...
I have a form that supposed to add records to a table on the database. I'm pretty sure I have the dataAdapter and Dataset set right but when I add a record, it complains that the primary key can’t be null. I’ve tried different things, including removing those fields and variables from the stored Proc, changing the Identity Properties of the Table, changing the AutoIncrement settings on the Dataset for that field, but all give me different errors. Nothing actually makes it work. This database has many records in it and the Primary key is a decimal field that starts at 5, then next was 10, then 28, then it started getting consecutive after 110. (111, 112, 113, etc.) (I'm porting over an old database to a new web site, so I'm somewhat contrained by the database.)
I guess my question is for adding records in to a database that has a primary unique key constraint. Certainly this is a pretty common thing. Obviously I do not want users to enter that in themselves, I thought it should simply autocreate/autonumber. So what is the best procedure and gotcha’s I need to watch out for?
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Sep 16, 2004
if i have the following code, how do i know if the transaction was actually successful, so basically where in this code can i write TRANSACTION SUCCESFUL?
try
{
//Open up the connection
conn.Open();
//Setup the Transaction
trans = conn.BeginTransaction();
//First query in transaction
pre_query = "Delete from Menu where spec_name="
+ "'"
+ spec_name_array[i].Text.ToString()
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//Second query in transaction
query = "INSERT into Menu VALUES ('"
+ Calendar1.SelectedDate
+"','"
+ spec_name_array[i].Text.ToString()
+"','"
+ spec_desc_array[i].Text.ToString()
+"','"
+spec_price_array[i].Text.ToString()
+"',1)";
SqlCommand comm = new SqlCommand(pre_query,conn);
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comm.Transaction = trans;
//Execute first query
comm.ExecuteNonQuery();
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comm.CommandText = query;
//Execute second query
comm.ExecuteNonQuery();
trans.Commit();
}
catch(SqlException ex)
{
com_label.Text = "Submission Not complete, did you forget the date or something else?";
//Undo all queries
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finally
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Aug 16, 2006
This may not be the right place for this post...but my head is hurting and I can't think right now.
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Mar 3, 2006
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But now I would like a good way to do this
I have 10 tables to copy from oracle. The only difference is just the name of the table.
static string[] g_tables =
{
"table_name_1",
"table_name_2",
"table_name_3",
€¦
};
foreach (string str_table in g_tables)
{
Oracle.DataAccess.Client.OracleCommand OracleCommand = new Oracle.DataAccess.Client.OracleCommand
(
"select * from " + str_table,
OracleConnection
);
Oracle.DataAccess.Client.OracleDataReader OracleDataReader =
OracleCommand.ExecuteReader();
// dump out to raw file destination
}
I understand there are some pieces left out but that is the basic idea. It seems like I€™m going to have write custom pieces for each step.
It does not seem like there is any advantage to using SSIS. Should I give up now and stick to writing windows services for stuff like this?
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Oct 30, 2007
My table structure...
enddt datetime(8)
status varchar(20)
when enddt time equal to server time.
I want to change status field to expired.
What is the easy way to do this?.
enddt status
8/22/2005 7:00:00 PM expired
9/22/2005 8:30:00 PM expired
10/30/2005 7:30:00 PM live
11/22/2005 9:30:00 PM live
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Sep 18, 2007
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Else(Fields!DayOfWeek.Value=4,"Wed",
etc etc
Am i doing this right, or am i off??
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Sep 5, 2007
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Oct 4, 2007
I have a column in my report that i want to show percentage change from the previous year to this year. So i enter all kinds of different type of formats for the formula, and keep getting the wrong answers or error messeges. Here's what i have tried recently:
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any suggestions? Everytime i try to put an aggregate in the box, its always tricky.
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Dec 21, 2006
hi,
I have this simple sql query - it should be pretty obvious what I'm trying to achieve but this syntax isn't accepted on SQL 2005, any suggestions?
SELECT Name FROM Users WHERE UsersID IN (EXEC dbo.ReturnDataByModule 'Groups',1200)
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Oct 19, 2007
What is the equivalent of Double for SQL Server?
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Mar 16, 2008
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Mar 16, 2008
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Jan 6, 2004
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Sub Button1_Click(sender As Object, e As EventArgs)
???? = MyQueryMethod(txtPhone.Text)
Thanks,
Matt
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Nov 21, 2004
I have a simple SQL table. The data looks like this:
products_ID----category----product_local
1----CORE----0
2----BASE----0
3----BRANCH----1
4----LEAF----3
I need to create a SQL statement that produces all category items where that ROW's products_ID is not found in ANY product_local in the table. So in the table above only the category BASE and LEAF would be printed because their products_ID are not found in any product_local in the table.
TIA as I am completely stuck!
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Nov 30, 2004
OK, I have two cols of data:
COL1 COL2
test ing
tams ert
test pan
ted ted
hom jis
ted sam
tams dom
test ut
I need to simply pull one row of data from the given rows. Whats in COL2 is not relevant. So an example would be:
I want to retrieve a row(any row, but only one) where COL1 = 'test'
An ecceptable result woould be:
COL1 COL2
test ing
or
COL1 COL2
test pan
or
COL1 COL2
test ut
I would appreciate any help. This is driving me nuts. Seems like it would be easy.
TIA,
STue
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Mar 1, 2001
Hi there,
I'm using bcp to import data into my database. the datetime format in the bcp file is ymd and my database has mdy datetime format. Is there any easy way to convert ymd into mdy when using bcp?
thanks a lot for your help!
Lena
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Apr 5, 1999
Is there an easy way to update a Value field
for all records in One Table from a Value Field in another?
Both Tables have the same number of records.
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Aug 2, 2002
Hi,
the following Insert statement is not acting like i would expect it. The final column (Average) divides two columns([Sum of Scores] / [Count Of Scores]) . The Average column is a numeric column with 5 decimal places. Yet, the result of the division is a whole number (no fractions). Why is this.
any help would be appreciated
Thanks,
Jim
Insert [Bankers_Scores_lead] ([ID], EqorMA, Region, Period,IBFirm, UndNeed ,QualIdea ,ProfAggr ,SpKnow ,negskill ,Perchem, RepPri, Repcomp, TranType, [Count Of Scores], [Sum of Scores], Average)
SELECT [ID],
EqorMA,
Region,
Period,
IBFirm,
UndNeed,
QualIdea,
ProfAggr,
SpKnow,
negskill,
Perchem,
RepPri,
Repcomp ,
TranType,
(Case when [UndNeed] >0 then 1 Else 0 END)
+(Case when [QualIdea] >0 then 1 Else 0 END)
+(Case when [ProfAggr] >0 then 1 Else 0 END)
+(Case when [SpKnow] >0 then 1 Else 0 END)
+(Case when [Perchem] >0 then 1 Else 0 END)
+(Case when [negskill] >0 then 1 Else 0 END)
,
(ISNULL([UndNeed],0))
+(ISNULL([QualIdea],0))
+(ISNULL([ProfAggr],0))
+(ISNULL([SpKnow],0))
+(ISNULL([negskill],0))
+ (ISNULL([Perchem],0))
,
((
(ISNULL([UndNeed],0))+
(ISNULL([QualIdea],0))+
(ISNULL([ProfAggr],0))+
(ISNULL([SpKnow],0))+
(ISNULL([Perchem],0)) +
(ISNULL([negskill],0)
))
/((Case when [UndNeed] >0 then 1 Else 0 END)
+(Case when [QualIdea] >0 then 1 Else 0 END)
+(Case when [ProfAggr] >0 then 1 Else 0 END)
+(Case when [SpKnow] >0 then 1 Else 0 END)
+(Case when [Perchem] >0 then 1 Else 0 END)
+(Case when [negskill] >0 then 1 Else 0 END)
))
FROM tmp_Bankers_Scores
Here is the create table statement
CREATE TABLE [dbo].[Bankers_Scores_lead] (
[ID] [int] NOT NULL ,
[EqorMA] [smallint] NOT NULL ,
[Region] [smallint] NOT NULL ,
[Period] [int] NULL ,
[IBFirm] [int] NULL ,
[UndNeed] numeric(8,5) NULL ,
[QualIdea] numeric(8,5) NULL ,
[ProfAggr] numeric(8,5) NULL ,
[SpKnow] numeric(8,5) NULL ,
[negskill] numeric(8,5) NULL ,
[Perchem] numeric(8,5) NULL ,
[RepPri] numeric(8,5) NULL ,
[Repcomp] numeric(8,5)NULL ,
[TranType] [smallint] NULL ,
[Count Of Scores] numeric(8,5) NULL ,
[Sum of Scores] numeric(8,5) NULL ,
[Average] numeric(8,5) NULL
) ON [PRIMARY]
here is the output
ID EqorMA Region Period IBFirm UndNeed QualIdea ProfAggr SpKnow negskill Perchem RepPri Repcomp TranType Count Of Scores Sum of Scores Average
----------- ------ ------ ----------- ----------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -------- --------------- ------------- ----------
75659 5 2 9 504 9.00000 8.00000 7.00000 8.00000 8.00000 8.00000 1.00000 .00000 11 6.00000 48.00000 8.00000
75659 5 2 9 504 9.00000 8.00000 7.00000 8.00000 8.00000 8.00000 1.00000 .00000 11 6.00000 48.00000 8.00000
79360 6 5 9 501 9.00000 8.00000 9.00000 8.00000 8.00000 8.00000 1.00000 .00000 15 6.00000 50.00000 8.00000
79360 6 5 9 501 9.00000 8.00000 9.00000 8.00000 8.00000 8.00000 1.00000 .00000 15 6.00000 50.00000 8.00000
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Aug 15, 2007
Hi I'm new to SQL and I'm stuggling with a simple query in MS-server 2005 and wondered if anyone can help me.
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eg.
select Sum(column1)
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devided by
select Sum(column1)
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Jul 1, 2004
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Jun 1, 2006
I have a ASP page where the user posts part of the name field. Then i need to provides the matches. (providing partial comparision of the field & correcting bad spelling)
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the query look like this
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I could make a copy of the column and update all info in the field to the soundex value, but then the like statement would not get it if the value was only part of it. for example say the data values where like 'Microsoft Software', or 'My Software Solutions', ect...
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Jun 22, 2007
I'm trying to find records in the 'user' table that DO NOT have a record in the 'stuff' table. So basically the statement should only return record 3 from the user table since there is not record in the stuff table for it. I think it a join, but I'm second guessing my self. Can some one please assist me. Thanks in advance.
user
uid name
1 James
2 Erick
3 Todd
stuff
userid thing
1 car
1 house
2 mansion
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Sep 13, 2007
Hey all,
A nice easy BCP question for y'all...
I'm currently running:
DECLARE @sql varchar(2000)
SET @sql = 'BCP master..sysobjects OUT C:sysobjects.csv -c -t, -T -S' + @@ServerName
EXEC master..xp_cmdshell @sql
Which works fine!
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May sound silly, but this is one of my first adventures into BCP and I'd rather not "pollute" the server with my test files!
Thankyall!
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Feb 20, 2008
I'm used to forming Select statements for IBM System i imbedded SQL in High Level source programs. I now find myself converting System i RPG programs to VB.NET classes. What I want to know is how to insert the value of a class variable into a SQL Select string. In the IBM world, I would do:
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