Truth Table Generator For Any Base!
Jul 25, 2007
This little handy algorithm provides a truth table for any range of numbers between 0 and 65535 of any base between 2 and 36!
As a twist, you can either return the digits concatenated or as separate columns.CREATE PROCEDURE dbo.uspTruthTable
(
@FromNumber SMALLINT = 0,
@ToNumber INT = 255,
@Step INT = 1,
@Base TINYINT = 2,
@Concat BIT = 0
)
AS
SET NOCOUNT ON
DECLARE @Temp INT,
@SQL VARCHAR(8000),
@b VARCHAR(12),
@d VARCHAR(2),
@Diff INT,
@Digits CHAR(36)
IF @FromNumber > @ToNumber
SELECT@Temp = @FromNumber,
@FromNumber = @ToNumber,
@ToNumber = @Temp
IF @FromNumber < 0
BEGIN
RAISERROR('The parameter FromNumber %d is less than 0 (base 10).', 16, 1, @FromNumber)
RETURN
END
IF @ToNumber > 65535
BEGIN
RAISERROR('The parameter ToNumber %d is greater than 65535 (base 10).', 16, 1, @ToNumber)
RETURN
END
IF @Base < 2
BEGIN
RAISERROR('The parameter Base %d is less than 2 (base 10).', 16, 1, @Base)
RETURN
END
IF @Base > 36
BEGIN
RAISERROR('The parameter Base %d is greater than 36 (base 10).', 16, 1, @Base)
RETURN
END
SELECT@SQL = '',
@Temp = FLOOR(LOG(@ToNumber) / LOG(@Base)),
@Diff = @ToNumber - @FromNumber + 1,
@Digits = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'
WHILE @Temp >=0
SELECT@b = CONVERT(VARCHAR, @Base),
@d = CONVERT(VARCHAR, @Temp),
@SQL = @SQL +CASE
WHEN @Concat = 1 THEN '+SUBSTRING(''' + @Digits + ''',1 + Number/POWER(' + @b + ',' + @d + ') % ' + @b + ', 1)'
ELSE ',SUBSTRING(''' + @Digits + ''',1 + Number/POWER(' + @b + ',' + @d + ') % ' + @b + ', 1) AS Digit' + @d
END,
@Temp = @Temp - 1
CREATE TABLE#Numbers
(
Number INT PRIMARY KEY
)
INSERT#Numbers
(
Number
)
VALUES(
@FromNumber
)
WHILE @Step <= @Diff
BEGIN
INSERT#Numbers
SELECT@Step + Number
FROM#Numbers
WHERENumber <= @ToNumber - @Step
SET@Step = @Step * 2
END
IF @Concat = 1
SET @SQL = 'SELECT Number, ''''' + @SQL + ' AS Digits FROM #Numbers ORDER BY Number'
ELSE
SET @SQL = 'SELECT Number' + @SQL + ' FROM #Numbers ORDER BY Number'
EXEC (@SQL)
DROP TABLE #NumbersYou can use the algorithm like these examplesEXEC dbo.uspTruthTable
EXEC dbo.uspTruthTable 0, 255, 1, 8
EXEC dbo.uspTruthTable DEFAULT, 15, 1, 2
E 12°55'05.76"
N 56°04'39.42"
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Jun 26, 1999
hey all,
my lecturer told me that in sql 6.5, if a table has foreign key constraint, a trigger simply would not work on that particular table,...if so,...how do i get about this problem?
thanx!
JC
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Jul 30, 2015
If the id1 will change in table1 it should also change the corresponding id1 field in table2 it does not do anything.
CREATE TRIGGER [dbo].[IDCHANGE]
ON [dbo].[table1]
AFTER UPDATE
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
[Code] .....
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Jul 20, 2006
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Say I have a table with items, prices, and dates.
PriceTable
ITEM PRICE DATE
A 1.00 5/5/2000
B 3.00 1/1/2000
A 2.50 6/5/2004
....
This table represents an items price from the date on. So Item 'A' costed 1.00 from 5/5/2000 through 6/5/2004, then it costed 2.50 from that day on.
Now say I have a table of transactions with items, amount bought, and dates.
TransactionTable
ITEM AMOUNT DATE
A 5 6/6/2003
A 1 8/5/2003
A 2 8/5/2004
The total for A should come out to be 11.00. There are multiple Items and multiple price changes.
If someone could point out how a inner join of this nature would work it will help me in my query. I guess the reason i say inner join is because I am joining multiple other tables to do my query.
My current Price Table has a start date and an end date and my query looks something like this. "Select SUM(PriceTable.Price * TransactionTable.Amount) From PriceTable Inner Join TransactionTable ON TransactionTable.Date Between PriceTable.StartDate and PriceTable.EndDate AND PriceTable.Item = TransactionTable.Item".
I want something like this because the tables need to be in the format above "Select SUM(PriceTable.Price * TransactionTable.Amount) From PriceTable INNER JOIN TransactionTable ON Max(PriceTable.Date) WHERE PriceTable.Date <= TransactionTable.Date AND PriceTable.Item = TransactionTable.Item".
Hope that made sense, thanks.
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Dec 21, 2005
I have a data table I have adabted for my own use and want to add a row to the table. Can I do that with Visual Web developer Express?
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Jul 19, 2007
Hi,
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Does any know of a valid SS2005 command or technique which will allow my to identify the base table for a PageID???
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Jul 19, 2007
Hi,
Have a LOB error which provides the corrupt PageID and this recommends a DBCC CHECKDB. However I'm unable to identify what the base table for the PageID. DBCC PAGE does not provide base table info (I think), DBCC PGLINKAGE has been retired in SS2005 and DBCC READPAGE doesn't work either.
Does any know of a valid SS2005 command or technique which will allow my to identify the base table for a PageID???
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Aug 19, 2002
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Nov 16, 2006
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I am getting "Insufficient base table information for updating or refreshing" Error some times. This Code executes in a Multi user Environment.
I tried to recreate this error condition on my local system by Deleteing/Updating the Reocrds from the table and even locking the table.
I get this error "Row cannot be located for updating. Some values may have been changed since it was last read."
Are both of these errors connected? or is there any way i can get rid of this error
The Code is somethng like this
Set objRs = New ADODB.Recordset
objRs.CursorLocation = adUseClient
objRs.Open strSql, SQLCON, adOpenDynamic, adLockOptimistic
If (Not objRs.BOF) And (Not objRs.EOF) Then
objRs.Fields("FLAG") = 1
objRs.Update
VAR1 = objRs.Fields("0")
Else
MsgBox ("No Reocrds exist")
End If
Thanks in Advance for any help
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Jun 2, 2007
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Is this expected behavior? Nothing I've read suggests I should have to grant permissions on the columns of the base table.
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Nov 20, 2001
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For every insert/update in table A /B the values should get insert/update in the view respectively. This insert/update on view should invoke the trigger.
And I am unable to see this trigger work on the view if any insert/update occurs on base table level.
Trigger is working only if any operation is done directly on the view.
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Mar 14, 2006
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Oct 14, 2015
I have the following table
Table Name EmployeeInformation
EmployeeID EmployeeFirstName EmployeeLastName
1 |John |Baker
2 |Carl |Lennon
3 |Marion |Herbert
Table Name PeriodInformation
PeriodID PeriodStart PeriodEnd
1 |1/1/14 |12/30/14
2 |1/1/15 |12/30/15
[code]...
I want a query to join all this tables based on EmployeeID, PeriodID and LeaveTypeID sum of LeaveEntitlement.LeaveEntitlementDaysNumber based on LeaveTypeID AS EntitleAnnaul and AS EntitleSick and sum AssignedLeave.AssignedLeaveDaysNumber based on LeaveTypeID AS AssignedAnnaul and AS AssignedSick and subtract EntitleAnnaul from AssignedAnnual based on LeaveTypeID AS AnnualBalance and subtract EntitleSick from AssignedSick based on LeaveTypeID AS SickBalance
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May 16, 2002
The VB code was ok if you wanted it to be basic but when I was using it and trying to get it to work into my project it was quite painful. So in retrospect I have gone back to C# ... so I can have operator overloading plus smaller code anyhow ... will post here new routine ... working on one that will convert a stored procedure to a function as well...
...
I still have the old code if anyone is interested, but like I said ... it's not very robust and getting it there in VB.NET just was a bigger pain than I need at the moment ...
Edited by - onamuji on 05/23/2002 13:05:52
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Jul 20, 2006
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Sep 19, 2007
HI all
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Nov 15, 2006
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Sep 1, 2004
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I see Crystal reports mentioned, but don't think my company would spend more money on this project.
Any help/Advice is greatly appreciated.
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Nov 26, 2003
I used to have the script mentioned in this post:
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=15980&SearchTerms=c#
I can't seem to find it and the link is no longer valid. Does anyone happen to have a copy of this script? I'd like to check it out again (finally starting to do regular C# programming here at work).
Thanks!
Kyle Heon
PixelMEDIA, Inc.
Senior Application Programmer, MCP
kheon@pixelmedia.com
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Jun 19, 2006
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Jun 17, 2004
I need to get rid of the first char of data in a field f1 (in sql server)
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Apr 6, 2007
In my final project, the biggest time consuming issue was writing a query, when there are 15 fields on the average than it is certainly not easy to write an SQL statement and run it (through code)
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2) we enter postfix text ( like .Trim(), .ToString() ) etc
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Feb 23, 2005
i have an application that uses a table for login access, for security reason i need to get a random numbers in this table daily. table consist of just two columns, userid and password. This table will be printed out on the web for users to get valid username and pw daily.
I m thinking about a job or dts package that will run once daily with a sql script to generate random number (referable 5 digit-letters and numbers), delete the table and re-create the table with same set column names and insert the random values in username and pw column.
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Jul 23, 2005
Hello,- Is any body aware of a random workload/query generator such as theTPC-H query generator (QGEN) ? I am looking for a query generator thattakes a schema as an input, and produces several queries.I need it mainly for performance evaluation. the generator I am lookingfor should produce SELECT queries, including joins, and not only INSERTINTO, DELETE, UPDATE queries such as the "SqlQueryGenerator" athttp://www.tucows.com/preview/297930ThanksRegards,Abdur-Rahman
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Nov 8, 2007
I have only been into SQL Server for a few months, and written severalstored procedures. Is there a good software product available that willgenerate the SQL code for a stored procedure based on a visual interface?Any help is appreciated.
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Jul 18, 2006
I replicated a table from DW to DM
but i filtered the table by month.
now i have several tables with the same schema on the datamart
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lets name the proc sqlwiz
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update dmtable1 set DM.nonkeyfield1= dw.nonkeyfield1,
DM.nonkeyfield2= dw.nonkeyfield2,
DM.nonkeyfield3= dw.nonkeyfield3
from dwtable1 dw where
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dm.keyfield2=dw.keyfield2
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the sp can also be used for generating update codes for vb.net
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Sep 28, 2007
In a Name table, I need to generate unique 6 digit random numbers in a field called UniqueID for all records that have the ID field populated.
I will need to run this script periodically. It is critical that any prevoiusly assigned UniqueIDs do not change and only fields that have an empty UniqueID field are updated. I need to preserve the historical mapping of the existing IDs to the ongoing assignment of UniqueIDs.
Regards,
Polar Bear
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Jan 21, 2005
Hi,
I need a solution ( if this is possible) to automatically generate create scripts for my replications on our live server and put that into a file.
I dont have permission to scrip that from the Enterprise Managger, but the support have and can make a job in the live server for this.
So that would be enough for me to put a job to the live server what puts the scripts to a file.
I want to use the same replications in my test environmnet, and they are always changing and I dont want to wait for the support.
I have an idea, but I still dont try it:
If I run a trace, when i push the generate sql script button, maybe I can get the code for the generating the create script.
:confused:
Is there a simple solution for this problem, or I have to get it from the trace ?
Thanx!
Tsabi
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Aug 28, 2006
Just a quick note to let you all know about a shareware app I have written called SqlSpec. It generates docs for any SQL Server 2000 or 2005 database, together with dependency diagrams, and lots more. It has very good reviews from the people who have tried it out so far.
If you are looking for a very good and reasonably priced doc generator for you databases, why not take a look?
You can find out more here: www.elsasoft.org (http://www.elsasoft.org/default.htm?referrer=jezemine).
Thanks!
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Jul 28, 2004
Friends
I want to run DBCC INDEXDEFRAG(Db_name, Tab, Idx) for many of the databases . Number is huge and it is near impossible to go to each server and do a manual run. Can someone provide me a scrip to generate the above syntex for all the tables in a db?
Thanks
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Jul 23, 2005
I am working with a report generator that is based on SQL Server 2000 anduses ASP as the UI. Basically we have a set of reports that end users canexecute through a web browser. In general the model works fine, but we arerunning into some scaling issues.What I'm trying to determine is, what is the optimal configuration for thissystem. It is currently a 2.4G Pentium with a large RAID and 1G of RAM. Wehave been using the "fixed" memory configuration, allocating 864M to SQL.This is on a Windows 2003 server box.This works fine when a "small" query or two is executed, but the performancesuffers terribly when several users try to run reports in parallel. A singlequery might take 10 minutes to run if nothing else is happening on the box,but if additional users log on an run reports, it's almost impossible topredict when the queries will finish.I am also looking at the effect of database size on performance, runningtests against a database with 1 month, 3 months, and say 12 months of data,running the same query against 2 databases in parallel. With the originalconfiguration, the results were all over the place, with the 12 monthdatabase outperforming the smaller dbs, while other times there was littledifference. It seems that once the system starts paging, and paging heavily,it's over; the system never "recovers" and queries that previously ran in afew minutes now take hours.I added 3 G more memory to the system, and modified boot.ini to include the/3GB switch. Now when I run the same tests, the results are much moreconsistent, as the system rarely ever has to swap. Then again I've neverseen it go past 1.7G in Task manager, making me think that any more than say2.5G of memory is a waste?Things we are trying to determine are:- in the SQL Server memory configuration, is Fixed better than Dynamic? Wehave read that Dynamic is not good at returning memory to the OS once it'sbeen allocated- What else can we do to optimize the performance for this application? Itseems to me if the indexes are properly designed, the database sizeshouldn't have that much impact on performance, but this appears to be trueonly to a point. In comparing the execution plans between say a 12 month anda 3 month database, the plans are sometimes dramatically different. I assumethis is due to the optimizer deciding that going directly to the base tablesand not using an index will result in better performance, when in reality,this doesn't always appear to be true.- Are there other SQL Server switches I should be tweaking? Is there somenumber of simultaneous queries that this configuration should be limited to?- What about other versions of SQL Server (e.g. Enterprise, Data Center,etc) would these buy us anything?Thanks for any advice,-Gary
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