Decoding Days Bitwise AND
Nov 11, 2004
Hello All
I'm working on a recurring multi-day appointment program. Basically the user can choose a meeting on multiple days of the week over a span of time. For example: Tuesday and Thursday from 10:00 to 10:30 from December 1st 2004 to February 27th 2005.
So I've decided the best way to handle this is to assign a value to each day of the week like so:
MON = 1
TUE = 2
WED = 4
THU = 8
FRI = 16
SAT = 32
SUN = 64
So if the user picks TUE and THU that would be 2 + 8 = 10. The value is unique and seems to work.
So the values would be:
@begin_date = '12/01/2004'
@begin_time = '10:00 AM'
@end_date = '02/27/2005'
@end_time = '10:30 AM'
@recur_days = 10
Now I want to pass the values to stored procedure that will decode the recur_days variable and create entries in a table for each date. I'm struggling to figure out 2 things
1. How do I decode the 10 back into 2(TUE) + 8(THU) ( I think it has something to do with the bitwise AND "&" operator but I'm not sure how to use it.)
2. What is the best way to loop through the date range and create a record for each day?
Regards
Russ
View 2 Replies
ADVERTISEMENT
Sep 5, 2007
CREATE FUNCTION dbo.fnDeURL
(
@URL VARCHAR(8000)
)
RETURNS VARCHAR(8000)
AS
BEGIN
DECLARE @Position INT,
@Base CHAR(16),
@High TINYINT,
@Low TINYINT,
@Pattern CHAR(21)
SELECT@Base = '0123456789abcdef',
@Pattern = '%[%][0-9a-f][0-9a-f]%',
@Position = PATINDEX(@Pattern, @URL)
WHILE @Position > 0
SELECT@High = CHARINDEX(SUBSTRING(@URL, @Position + 1, 1), @Base),
@Low = CHARINDEX(SUBSTRING(@URL, @Position + 2, 1), @Base),
@URL = STUFF(@URL, @Position, 3, CHAR(16 * @High + @Low - 17)),
@Position = PATINDEX(@Pattern, @URL)
RETURNREPLACE(@URL, '+', ' ')
END
E 12°55'05.25"
N 56°04'39.16"
EDIT: Decoding + as Jeff mentioned
View 9 Replies
View Related
May 18, 2006
Hi
How do you decode an image (found inside an xml file) which has been encoded in MIME Base 64. If you read in the string, how would you get the image?
I know other database systems (like ASA) that has a build in function to do it for you but I cant find a similar function in SQL Express?
Thanks
View 1 Replies
View Related
Feb 16, 2004
Yes i just can't find a place to help me out on something.
Everything went well to create the XML using transact SQL command
SELECT TOP 10 * FROM TblEvenement for xml auto, binary base64
But how do decode my image field in my XML so i can save the data into a new table ..
all this as to be done in a store procedure inside SQL-Server 2000 !!
thanx guys !!
***Any good sites or example i can use for !!
View 5 Replies
View Related
Mar 2, 2006
I have an OLE-DB Command transformation that inserts a row. If the insert SQL command fails for some reason, I use the "Redirect Row" option to send the row to another OLE-DB Command transformation that logs the error on that row to a "failed rows" table. In this table I log the ErrorCode and ErrorColumn values that come with the error path from the first OLE-DB Command.
OK, that's all working great. However, here's the kicker: there's no error description value. The ErrorCode value, naturally, is the decimal form of an HRESULT--for example, -1071607696. Without some further information, however, this code is not useful for troubleshooting.
Has anyone figured out a trick here? I'm not even certain that this is an SSIS HRESULT, since it could for all I know be from the OLE-DB layer, the database layer, or somewhere else.
Thanks,
Dan
View 7 Replies
View Related
Sep 19, 2007
Hi,
I have a table column type as nText, however there are some Chinese character stored in that field and it is a messed up as it is not readable.
In my vb.net code, I did Convert to unicode by getting the byte of each character and encode it with UTF8 e.g:
Public Shared Function ConvertToUnicode(ByVal s As String) As String
' Convert To Unicode
Dim MyBytes As Byte() = Encoding.Default.GetBytes(s)
Dim GBencoding As Encoding = System.Text.UTF8Encoding.UTF8
Return GBencoding.GetString(MyBytes)
End Function
This works well but ,the problem is that it slows down the process quite alot, and I wonder are there any text encoding method I can use in SQL that can run when i do the SELECT Statement?
SELECT
Convert(MyNTEXTColumn)
....
something like that?
Thanks.
Jon
View 4 Replies
View Related
Nov 27, 2007
Hi,
This is a crosspost, I also asked this question in the learnvisualstudio.net forum. I'm trying to engineer a bit of code in SQL that "decodes" a value stored in a table that represents an array of boolean values, stored using bitwise operations. I have the number, a reference of bit positions for each item, and the actual items checked per the program that normally processes this value. I'm trying to write a sproc that will perform actions based on the booleans in my list, but I can't get the same results the interface gives me.
Here's an example:
Value is 66756
Bit positions 2, 6, 7, and 10 should all return true. I was trying to deduce this using the following:
Code BlockSELECT CONVERT (BIT, <value> & (2 ^ <position>))
but that doesn't work at all. It's my (broken) translation of the code normally used to display this value as a checkbox, which comes from VB6 and looks something like this:
Code Block.ListItems(CStr() & "_").Checked = CBool <value> And (2 ^ <position>))
Can anyone tell me what I'm doing wrong? Thanks in advance.
View 3 Replies
View Related
Dec 4, 2003
I was doing a SUM on my returned rows and i found that what i really want is an aggregate bitwise OR on all the returned rows. Do you know what's the function for that?
Thank you
View 4 Replies
View Related
Sep 6, 2006
I was looking into some of the System stored procedures like sp_denylogin, sp_grantLogin etc. I found bit wise operations like
update master.dbo.sysxlogins set xstatus = (xstatus & ~1) | 2, xdate2 = getdate()
where name = @loginame and srvid IS NULL
How does the bitwise NOT(~) works with different datatypes like INT, SMALLINT and TINYINT?
Look at the following sample code and result. I just wanted to understand how it works with int and smallint
declare @a int
declare @b smallint
declare @c tinyint
select @a = 1, @b = 1, @c = 1
select @a=~@a, @b= ~@b, @c= ~@c
select @a, @b, @c
Result
~~~~~
-2-2254
Thanks in advance
Gnana
View 3 Replies
View Related
Jan 30, 2004
Is there a way to do a logical exclusive OR (XOR) in sql server?
I'm trying to do this in where clause, something like:
WHERE
(not exists (select 1 from table a where a.date > '01/30/03') XOR
exists (select 1 from table a where a.date < '01/30/03'))
Thanks!
View 14 Replies
View Related
Jul 23, 2005
I am new to bitwise thing in MSSQL.Let's suppose there's a table of favorite foodsinsert int fav_foods(food_name,bitwiseVal)values('Pasta',1)insert int fav_foods(food_name,bitwiseVal)values('Chicken',2)insert int fav_foods(food_name,bitwiseVal)values('Beef',4)insert int fav_foods(food_name,bitwiseVal)values('Fish',8)insert int fav_foods(food_name,bitwiseVal)values('Pork',16)How do I write query to find people who selected more than one item andselected items from "Pasta, Chicken, Beef, Pork"(but not fish)?I hope my question is not confusing.....
View 6 Replies
View Related
Oct 22, 2014
I am trying to get a culmulative Bitwise OR operation on a column by query - rather than using a CLR function.
The problem is shown below:
CREATE TABLE #Operations (
PK INT NOT NULL IDENTITY(1,1),
UserName VARCHAR(50) NOT NULL,
UserProcess VARCHAR(50) NOT NULL,
ServerOperation VARCHAR(50) NOT NULL,
Permission INT NOT NULL );
[Code] ....
So Far I've tried SUM - wrong results, and STUFF - which doesn't seem appropriate for bitwise operation - neither give useful results.
-- SUM Operation - fails
SELECT DISTINCT
UserName,
ServerOperation,
SUM(Permission) AS Permission
FROM #Operations
[Code] ....
It may be possible to materialise the permissions each time one is changed (e.g. by to use a cursor ), however I would prefer a query or function or combination to generate the result.
View 5 Replies
View Related
Jan 15, 2007
I would like to do something like a SELECT * FROM Files WHERE (Attributes & ?) but the & operator isn't recognized. I looked at the documentation sample for it and in the sample the & operator isn't used in the WHERE clause so I thought that might be the reason but I still can't get the operator to work. So even the doc sample code for it doesn't work.
View 3 Replies
View Related
Jan 7, 2014
I have an SQL code below which removes weekends and non working days when calculating days difference between two dates:
ce.enquiry_time represents when the enquiry was logged
(DATEDIFF(dd, ce.enquiry_time, getdate()) + 1)
-(DATEDIFF(wk, ce.enquiry_time, getdate()) * 2)
-(CASE WHEN DATENAME(dw, ce.enquiry_time) = 'Sunday' THEN 1 ELSE 0 END)
-(CASE WHEN DATENAME(dw, getdate()) = 'Saturday' THEN 1 ELSE 0 END)
-(SELECT COUNT(*) FROM nonworking_day WHERE nonworking_day.nonworking_date >= ce.enquiry_time AND nonworking_day.nonworking_date < dateadd(dd,datediff(dd,0,getdate()),1))
It works but I don't understand how it works it out. I am having issues understanding each coloured piece of code and how it works together.
View 1 Replies
View Related
Feb 25, 2001
HI, i am trying to make query that has computations with it. but when there's a point computing between int and float i had to use cast() function to convert certain data types. somehow it only works on converting float to integer because when i'm converting an integer into float inorder to be computed with a float it bombs. my query is like this ....
SELECT cast(((cast(((lat - (SELECT LAT FROM TPS_ZIPUSA WHERE ZIP_CODE = 00210)) * 69.1) AS int) ^ 2) + (cast((69.1 * (lng - (SELECT Lng FROM TPS_ZIPUSA WHERE ZIP_CODE = 00210)) * (COS((SELECT LAT FROM TPS_ZIPUSA WHERE ZIP_CODE = 00210) / 57.3))) AS int) ^ 2)) AS float) ^ .5
FROM TPS_ZIPUSA
.5 is where the query bombs. any idea why is this happenning?
by the way, i'm using sql server 7.0.
francis,
View 2 Replies
View Related
Oct 25, 2006
Hello,I am writing a query to select records added to a table today, in the last 3 days, in the last 7 days, and so on.Here is what I have (which seems that its not working exactly). -- total listed today
SELECT COUNT (*) FROM mytable WHERE DATEDIFF(Day, mydatecolumn, getdate() ) <= 0-- total listed yesterday
SELECT COUNT (*) FROM mytable WHERE DATEDIFF(Day, mydatecolumn, getdate() ) <= 1-- total listed in the last 3 days
SELECT COUNT (*) FROM mytable WHERE DATEDIFF(Day, mydatecolumn, getdate() ) <= 3I'd like to be able to select the count for records added within the last X number of days. Can someone please help me out? Thanks so much in advance.
View 1 Replies
View Related
Mar 18, 2014
I want to create a custom bitwise OR aggregate function.
I want to use it like the built in aggregate functions (MIN, MAX etc.)
SELECT dbo.bitwise_or(bit_string) FROM table
where bit_string is a nvarchar(3)
so for example if the table contains two rows ('100', '001') the above query should return '101'
I would like to implement this as a CLR function/assembly with the aggregate below:
CREATE AGGREGATE dbo.bitwise_or (bit_string nvarchar(3))
RETURNS [nvarchar(3)]
EXTERNAL NAME [Aggregate].[bitwise_or]
I have followed this post to implement amedian aggregate function [URL] ..... but there is a lot of code (not sure what is really needed in my case).
View 9 Replies
View Related
Feb 6, 2007
Hi,
We are facing a problem while passing a string containing the "&" character into Full Text search CONTAINS predicate. The records that do have this character are not being returned by the search.
I'd like to raise two questions:
1) Is there any special way to escape this character?
2) Does FTS index it at all?
We have tried all known (to us) ways of escaping like doubling the character, using char(38), using ESCAPE etc..Nothing seem to work. Any help would be appreciated.
Thanks,
Alex
View 2 Replies
View Related
Jun 9, 2008
How would I bring back a column that shows all the days from the begining of the year to the current date. Also make sure this moves onto the next year.
View 9 Replies
View Related
Jan 24, 2007
Did a bit of searching, but couldn't find it. I'm looking to get data from the past 7 days:
select * from inquiry
where created_date is within the last 7 days
Thanks,
View 2 Replies
View Related
Jul 10, 2007
Hey heyI've written my site in asp.net 2 and have set up roles and various logins etc which work beautifully locally. Now, when i upload to my host I get the: An error has occurred while establishing a connection to
the server. When connecting to SQL Server 2005, this failure may be
caused by the fact that under the default settings SQL Server does not
allow remote connections. (provider: SQL Network Interfaces, error: 26
- Error Locating Server/Instance Specified)The thing is, I've checked my connection string a million times and it's perfect, I've also checked all the database settings on my host and they're all fine. However, when i use SQL Server Management Studio Express to copy my database from the local to the remote server (from a tutorial on these forums), I get the "Operation completed successfully" message yet when I expand my tables, there is no data in them. I've tried copying and pasting the data in manually but i still get the same issue. It's driving me absolutely insane! Anyone any ideas?Thanks
View 6 Replies
View Related
Aug 6, 2007
Hi all,
I have a table in which I have two fields in my DB.
FromDate and ToDate.
Both are stored as Varchar(MAX).
I would like to have an SP which gives me the Days in Between them.
Regards,
Naveen.
View 4 Replies
View Related
Aug 25, 2005
Is there any way to find out in sql server that whether it is Monday to friday or saturday sunday.I have to write a stored procedure in which the logic shoukld be done only if there is a weekend.if saturday or sunday select * from status_tempPlease let me know if there is any function that is available in sql
View 4 Replies
View Related
Jan 24, 2006
Is there anyway to get SQL to convert a date to days of the week?
Example, I have a query where the date is "01/01/2006" but I would like it to display "Sunday". Thank you.
View 2 Replies
View Related
Feb 3, 2006
How can I select records from a schedule table that have end dates older than 90 days?
Can I do getdate() -90?
Code:
select *
from dbo.schedule
where enddate <> endate-(90 days?)
View 1 Replies
View Related
Feb 26, 2006
Hi,
I just want to know, is there anything more better solution than this one to find out the no of days in a month ?
I have done this but I am not satisfied,anybody has a smarter solution?
Plz comment..
My Solution :
/* check leap year*/
if year(getdate())%4<>0
set @noofdays=(select case month(getdate())-1
when 1 then 31
when 2 then 28
when 3 then 31
when 4 then 30
when 5 then 31
when 6 then 30
when 7 then 31
when 8 then 31
when 9 then 30
when 10 then 31
when 11 then 30
when 12 then 31
end )
else
set @noofdays=(select case month(getdate())-1
when 1 then 31
when 2 then 29
when 3 then 31
when 4 then 30
when 5 then 31
when 6 then 30
when 7 then 31
when 8 then 31
when 9 then 30
when 10 then 31
when 11 then 30
when 12 then 31
end)
Joydeep
View 2 Replies
View Related
May 19, 2004
I have a little query that returns me all the days in a month, but the days are not in the order I need. They come out like so..
January 10
January 11
January 12
January 13
January 14
etc
January 19
January 2
January 20
January 21
January 22
here is my sample code
select [month] + ' ' + [day] as [Date] from mytable
where [month] = 'january'
and [year] = '2004'
Thanks, Jeff
View 10 Replies
View Related
Apr 7, 2008
Hi, I used the following query to update my columns according to the change of time and days of the week. But my query is not working as it should. Today is Tuesday and the time now is 9am so according to my query Mon_Night column should be updated but Sat_Night column is being updated when i execute the query. Please advice..
declare @Weekday bit, @hour int
select @Weekday = datepart(dw,getdate()),@hour= datepart(hh,getdate())
Update Weekly set
Sat_Night=CASE WHEN (@Weekday= 1 and (@hour> 7 AND @hour<=19))
THEN ALD.EngTime ELSE NULL END,
Sun_Day=CASE WHEN (@Weekday= 1 and (@hour > 18 AND @hour < 7))
THEN ALD.EngTime ELSE NULL END,
Sun_Night=CASE WHEN (@Weekday= 2 and (@hour> 7 AND @hour<=19))
THEN ALD.EngTime ELSE NULL END,
Mon_Day=CASE WHEN (@Weekday= 2 and (@hour > 18 AND @hour < 7))
THEN ALD.EngTime ELSE NULL END,
Mon_Night=CASE WHEN (@Weekday= 3 and (@hour> 7 AND @hour<=19))
THEN ALD.EngTime ELSE NULL END,
Tue_Day=CASE WHEN (@Weekday= 3 and (@hour > 18 AND @hour < 7))
THEN ALD.EngTime ELSE NULL END,
Tue_Night=CASE WHEN (@Weekday= 4 and (@hour> 7 AND @hour<=19))
THEN ALD.EngTime ELSE NULL END,
Wed_Day=CASE WHEN (@Weekday= 4 and (@hour > 18 AND @hour < 7))
THEN ALD.EngTime ELSE NULL END,
Wed_Night=CASE WHEN (@Weekday= 5 and (@hour> 7 AND @hour<=19))
THEN ALD.EngTime ELSE NULL END,
Thu_Day=CASE WHEN (@Weekday= 5 and (@hour > 18 AND @hour < 7))
THEN ALD.EngTime ELSE NULL END,
Thu_Night=CASE WHEN (@Weekday= 6 and (@hour> 7 AND @hour<=19))
THEN ALD.EngTime ELSE NULL END,
Fri_Day=CASE WHEN (@Weekday= 6 and (@hour > 18 AND @hour < 7))
THEN ALD.EngTime ELSE NULL END,
Fri_Night=CASE WHEN (@Weekday= 7 and (@hour> 7 AND @hour<=19))
THEN ALD.EngTime ELSE NULL END,
Sat_Day=CASE WHEN (@Weekday= 7 and (@hour > 18 AND @hour < 7))
THEN ALD.EngTime ELSE NULL END
from ALD join Weekly on Weekly.TesterID = ALD.TesterID
View 18 Replies
View Related
Apr 16, 2008
How would I do a date range from the first day of this year to the getdate(), and so it will change once the new year hits as well?
View 6 Replies
View Related
May 8, 2008
I've have these following table
tbllocation
Main_ID | Date_Taken | Time |Hit
-----------------------------------------
206 | 5/9/2008 | 100 | 2
206 | 5/9/2008 | 200 | 3
206 | 5/6/2008 | 300 | 6
201 | 5/1/2008 | 400 | 5
201 | 5/4/2008 | 500 | 9
201 | 5/7/2008 | 600 | 2
204 | 5/2/2008 | 700 | 2
204 | 5/3/2008 | 800 | 4
204 | 5/6/2008 | 900 | 2
203 | 5/7/2008 | 100 | 2
203 | 5/8/2008 | 200 | 3
203 | 5/9/2008 | 300 | 6
202 | 5/4/2008 | 400 | 5
202 | 5/3/2008 | 500 | 9
202 | 5/8/2008 | 200 | 3
205 | 5/2/2008 | 300 | 6
205 | 5/1/2008 | 400 | 5
205 | 5/9/2008 | 500 | 9
tblSetValue
Main_ID | Hit2
---------------
206| 3
201| 5
204| 3
203| 1
202| 8
205| 7
*Main_ID is a primary key
Condition
1. Let's say, the current date is 5/9/2008
2. Result only display the last 7 days data. From above data. it's mean only pickup from 5/3/2008 to 5/9/2008
3. Every Main_ID only pickup the MAX Hit
4. Diff (column on the fly) = Hit - Hit2
The expected result shown as follow
tblResult
Main_ID | Date_Taken | Time | Hit | Hit2 | Diff
-----------------------------------------------
206| 5/6/2008 | 300 | 6 | 3 | 3
201| 5/4/2008 | 500 | 9 | 5 | 4
204| 5/3/2008 | 800 | 4 | 3 | 1
203| 5/9/2008 | 300 | 6 | 1 | 5
....
....
....
Anyone can help me to built the query?
View 6 Replies
View Related
Jun 20, 2008
dear gurus,
I want to get the working days between two days..
in a single query.
i will give the start_date '06-02-2008',end_date '06-13-2008' the result should be as below.
06-02-2008Monday
06-03-2008Tuesday
06-04-2008Wednesday
06-05-2008Thursday
06-06-2008Friday
06-09-2008Monday
06-10-2008Tuesday
06-11-2008Wednesday
06-12-2008Thursday
06-13-2008Friday
Thanks in advance.
cool...,
View 5 Replies
View Related
Jun 20, 2008
Dear gurus..,
I need to get all the days in a year in a single query.
Thanks in advance.,
cool...,
View 9 Replies
View Related
Apr 16, 2007
Hello,
I have a table with a field Expiration of smalldatetime. I want to only display the data that has 60 days or more between Expiration and todays date. Any help would be highly appreciated.
View 5 Replies
View Related
