Binary Operators In Access 97
Jan 6, 2006
I am trying to store binary values (as decimal long integers) and then use bitwise comparisons to update the values. MS help suggest that the standard logical operators (And or etc) can do bitwise comparison as opposed to comparing boolean logical values for expressions; but I have found no way of making this work.
Is this possible? Any ideas. Doing it mechanically, by splitting the decimal into the relevant parts for any bit is very tedious!
Gibbo
View Replies
ADVERTISEMENT
Dec 6, 2006
Hi
I have a problem in binary type in access
I have some values that are between 1 to 32 byte
I want to specify the type of my field to something like "varbinary" such as SQL server but I have not this type
actually I used OLE object type but it doesn't like it.
for example when I use:
insert into t_t1(i,j) values(1,23)
while j's type is OLE object,
the row is inserted but I can not see the value of j column and I can not select on j column too for example
select * from t_t1 where j=23
has no result.
furthermore, I want to use hex values but I can not do it.
when I use
insert into t_t1(i,j) values(1,0xAD)
I got an error that says the type is mismatched
I know it may shows I expect unreasonably from access but please help me to find the solution
thanks for your attention
Best regard
View 1 Replies
View Related
Nov 7, 2007
I am currently learning the Totals in Access 2003, using the Group By and it's drop down menu which has all the Min,Max,Sum Count etc Expressions.
I have a table of which I need to create a query, the table contains info with Mechanics names and jobs that they have done, often a mechanics name appears more than once in the table.
Which Expression do I use to query the number of mechanics in the table? When I use the Count the query contains all of the mechanics names including the the ones whose names appear more than once! :confused:
Any help would be gratefully appreciated I look forward to any replies thank you.
Sarah
View 11 Replies
View Related
Sep 7, 2005
Is it possible to have operators (<, >, <=, >=) in an IIF statement like this:
iif([field a] is null, > [field b], < [field c])
This is in the criteria for a currency field.
I have been trying different combinations without any luck for the last couple of hours or so. :confused: :confused:
Any help would be greatly appreciated.
Thanks in advance,
Brian
View 4 Replies
View Related
Nov 7, 2005
Hello,
I'm gonna try to explain my problem.
In fact, I have a form where I have a list where the user can select the following signs :
<, >, >=, <=, = (greater than, less than etc...)
Also, the user has the possibility to set the value that will be go with the operator above.
I tried the following expression in the query :
=[Forms]![Open_Form]![Sign CL AMT] & [Forms]![Open_Form]![CL_Amt]
the sign CL Amt is > and the CL AMt is 500'000 and I want to have >500000 in the criteria of the query in order to have only the amount above 500'000.
But is does not work.
I get the message : "The expression is typed incorectly or is too complex to be evaluated. For example, a numeric expression may contain too many complicated elements. Try simplifying the expression by assigning parts of the expression to variables"
If some one has a solution would be very appreciated.
Thanks in advance.
Cheers
Dan
View 8 Replies
View Related
Apr 27, 2006
I'm having difficulty coming up with a way to exlcuded a group of dates from my Query. I am trying to have a set of dates come up without the dates, between 7/1/2006 and 7/31/2006.
I've tried <> Between #7/1/2006# And #7/31/2006#, and a few others with quotes and such. Any help would be greatly appreciated.
View 1 Replies
View Related
Dec 6, 2006
Hey
Can someone answer me if Like "Red" and Like "Blue" Or Like "Red" is a logical operator?
Thanks for the help
View 1 Replies
View Related
Jul 2, 2014
Ihow to formulate a calculated field properly that would look for records that has at least 'annual report' in a specific field.
For example, a record with a field ([DocumentType]) with "2013 annual report", another record with a field ([DocumentType]) with "2012 annual report" and then I would like to count in those records and exclude the other records.
Here is the formula I wrote:
Code:
Report: IIf([TABLE]![DocumentType]<>"Annual Report",[TABLE]![Name],"")
Maybe I am using the wrong operator or something....?
View 3 Replies
View Related
Jul 24, 2006
I am looking for some help, I have a access database that is interfacing to a sql storage.
The problem I am having, is I have a Image that is containing archives for emails, however I have been yet to figure out hor to read that text stored in the image.
So far I have been able to come up with the data being stored in binary, but am unable to read it in a access form.
Make sence? Hope so.
Through SQL, I am able to run a query to read the data:
SELECT CONVERT(varchar(8000),CAST (body AS binary(8000) )) from arc_bodies
However I would like this text to be read through a form in access, and am unable to figure out how... Please help if possible, would be greatly appreciated.
View 1 Replies
View Related
Feb 23, 2006
I am preparing a database application that will be used by one person in an organization. Frequently , (every year or two) the program will be given to another (usually a laptop) user in the organization as that person assumes the task of the program’s operation and responsibilities.
I would like the user to load the program from the installation CD (made with Wise Installation System and SageKey softwares) on each computer each time there is a brand new user and each time a subsequent user takes over. However, each successive user needs to have the data files passed from the last user.
At face value it seems that having a front end/back end arrangement might be the most desirable. Can anyone jump start me on the best way to accomplish this process to EZ data transfer?
Thanks in advance to all,
JQ
View 1 Replies
View Related
Jan 29, 2007
Hi there,
I have a simple bit of VBcode in my database which reads the password a user enters and 'encrypts' it for storing in the user table. It's more obfuscation than encryption to be honest, and I feel limited by the 'text' data type assigned to the password field.
At the moment it works by taking the password entered, and converting the whole lot into a byte array, then for each 'character' in the array, changing its binary value. At the moment it's then converted back into a string and dumped into the 'password' field, as garbage characters. But they are still characters, and if I go out of range of the character set it results in horrible errors :D.
I feel I may be missing the blindingly obvious and could just not convert it back to string, and write the binary into a text field instead, but I'm not sure how I'd get intelligible data back.
The reason it's not exactly encryption is because the key is the same for all characters on all passwords (I just multiply the binary value by 2!) what I want is to have a key as well, stored in another field alongside, but again can't implement this due to character-set range issues.
So my question is - is there a 'raw' data field hidden somewhere amongst the features of microsoft access, or should I be thinking about just storing the numbers themselves? For the moment I'll investigate the latter, but I'll appreciate any help! Thanks :)
View 1 Replies
View Related
Sep 24, 2013
I have a text column with hexadecimal strings like "4E1B0A65FE3299FE", ie. of length 16.I'm doing an ALTER COLUMN query to convert the column to varbinary, but Access is doing conversion by ASCII, which results in a varbinary field of size 32, I think this is because the text column is in Unicode.
SQL Server has something called "styles" which are used with CONVERT.where you can choose to convert by two characters at a time 2:1..How do I do the same in an Access query? CONVERT/CAST are no supported.
View 1 Replies
View Related
May 10, 2014
i want to copy binary data to another table with same structure.
how can i do this.
View 4 Replies
View Related
May 30, 2013
I have requirement to draw a binary tree in forms, how to implement this?
View 1 Replies
View Related
Oct 2, 2014
I have a report where my customer wants to be able to input a value and then be able to select whether the report shows values above or below that value. I have a combo box that has 2 values (1=Less than or equal to, 2=greater than or equal to). There is a text box where he inputs the rate to compare against (e.g. $75). When he hits submit, the application stores the values of the combo box and text box into global variable and then I have a public function that can be used to retrieve the values. GetHRate() gets the value to compare against and GetHRateCompare() gets the value to indicate <=(1) or >=(2).
In my query for criteria for rate I have this expression:
IIf(GetHRateCompare()=1,"'<=",">=") & GetHrate()
I've tried every combination of double quotes, single quotes, no quotes moving the GetHRate inside the IIf statement and nothing seems to work.
If I just hardcode <=GetHrate() into the criteria it works perfect but that does not achieve my goal of letting him select over/under at run time. Here's the full query:
SELECT qryCustomers_AverageTimeByScheduleID.ServiceName, qryCustomers_AverageTimeByScheduleID.ScheduleID, qryCustomers_AverageTimeByScheduleID.SumOfTotalTim e, qryCustomers_AverageTimeByScheduleID.PropertyID, qryCustomers_AverageTimeByScheduleID.PropertyName, qryCustomers_AverageTimeByScheduleID.MonthCount, qryCustomers_AverageTimeByScheduleID.AverageTime,
[Code] ....
View 2 Replies
View Related
Jan 31, 2008
This the first time I post in this forum and I tried looking for an answer to my question before posting, so I apologize if my question has been answered previously.
Is it possible to determine, in Access 2000, the data type in a Make-Table query of a new column with null value so that it does not default to binary.
Here is my sample sql:
SELECT tblAddressBook.Name, Null AS Email INTO tblTestTable
FROM tblAddressBook;
The output is tblTestTable with two columns: Name and Email. The data type of column Email defaults to Binary. How do I make it default to Text.
Thank you.
View 4 Replies
View Related
Oct 7, 2014
I am looking for a function that will allow me to encrypt/decrypt single image files as and when required. I have built my own simple one to encrypt a string that will be stored in a filename as all the ones I found created unusable filenames.
However I don't know where to start with the image file encryption.
(Any better way to encrypt a string that can be used in a file name that would be great too. My method is a bit basic).
View 2 Replies
View Related
Apr 8, 2013
I am working on a project that requires data transfer using TCPIP sockets. I am using a 3rd party Library (Ostrosoft) that handles the wsock32.dll api calls.
The project calls for the creation of a header that logs into a user account.
The first part of the header is a marker, with a value of 4,275,878,552. It is to be supplied in a Binary format of length 4.
My quesion is "How do I create this marker".
What I have tried so far is a string variable - strMarker thus:
strMarker = ChrB(&HFE) & ChrB(&HDC) & ChrB(&HBA) & ChrB(&H98)
Using the ChrB function to convert the Hex version of that number (FEDCBA98)
View 5 Replies
View Related
Jan 29, 2007
Hello,
I have installed Microsoft Access 2003 and Microsoft Access 2003 Developer Extensions. I can create Access application by using the Package Wizard.
But after I upgrade from Microsoft Access 2003 to Microsoft Access 2007.
I can't use the Package Wizard.
How can I do to solve this?
Thanks.
View 1 Replies
View Related
Jul 10, 2006
Hi,
I have been using "fSetAccessWindow (SW_HIDDEN)" in the open event of my
main switchboard to hide the grey Access screen from being visible behind
forms, reports, etc in this db. But when I started using a .vbs script file
to launch the db, the Access window stopped being hidden. (The reason I use
the script for launching is that it temporarily sets the db's security level
to 1 which stops the macro security warning from coming up.) Apparently MS
knows about this happening and released a technique to rectify the situation,
but I don't understand their instructions. It looks like they expect one to
have more understanding than I have. Could someone help me get this
impliemented? Here is the article:
http://support.microsoft.com/kb/167659/en-us
Thanks!
View 2 Replies
View Related
Apr 13, 2007
Hi!
This is Kishore, working on VB Project which is using MS-Access95 as backend.
Now, i want to change the Database login Password.
Could anyone guide me in this context.
Regards,
Kishore
View 4 Replies
View Related
Sep 9, 2005
Using Access's User and Group Accounts or Using a Login Form to access database?
I've been researching on how to make a database secure. How to create User and Group Accounts on access, I see the step by step instructions and tried it out myself.
I also saw some sites where they give an example of a Login Form and how to create one.
My question is do you need to create both. First create the users and groups to permit or deny access to certain forms and then have a login form?
But would that mean that they'd have to login twice? Once when the database opens because it activates the db security that was created and then login again in the login form that was created?
Also when the user logins in and clicks on the cmd button on the form which opens up another from, frmWorkLog, I have an Employee field. This field I want it to have the user's name entered automatically and "locked". So that info, employee name, is extracted from the user's login. So then the user can only see his or her records only and no one elses.
How would I go about creating that. Hope I made my explanation clear.
Thanks in advance.
View 3 Replies
View Related
Apr 15, 2007
I have two database applications and they are:
- the (A) application is for administration use.
- the (B) application is for normal users use.
the idea is that: I made the (A) application for administrators who have full control over the database objects (tables, forms, queries, and so on ...).
the (B) application I have created for normal users who will have only to use forms to insert some data and display data only.
but the two applications has a respective table called "vacation request" table. where I linked them, so the both administrators and users can share the data.
The real question is that: How can I prevent the users from seeing the database objects in their application. I used the database options which have helped me in hidding the database objectives when the users open the application, but unfortunately they managed to access to the database objects by pressing the special keys.
I would like to have an access to the (B) application when I want to make some modifications to the forms and then lock it from users where they only have to use the forms for requesting vacations and view the vacations.
View 1 Replies
View Related
May 3, 2014
I have a simple access search form , that's based on a query that fill parameters from the form textboxes, when the access form loads its keeps prompting for parameters value which looks ugly .. I want to open the form, displaying all the records in the table and filter when i click search ..
I have a data entry entry form, that i want to generate success message after successful insert in database. I have done it in the button event if no error happens, still if i left all fields blank and clicked save, it displays the message ..
I need to change that to display please fill the textboxes then click save , and display success message when the row is actually inserted ..
Check the following attachment for sample.
View 14 Replies
View Related
Oct 24, 2013
I've been using the following code successfully in Access 2003 & now I need to migrate to Access 2010. The purpose of the code is to use the items that the user selects in the list box to build the criteria of a query. Access 2010 keeps giving me a syntax error when I try to run the query & I don't know why:
My code is:
On Error GoTo Err_Command151_Click
' Declare variables
Dim db As DAO.Database
Dim qdf As DAO.QueryDef
Dim varItem As Variant
Dim strCriteria As String
Dim strSQL As String
[Code] .....
The syntax error I get in Access 2010 is:
Syntax Error in query expression 'SELECT * FROM
qryContractListSummarybyDateContract3TYPEBREAK WHERE
qryContractListSummarybyDateContract3TYPEBREAK.Rep ortableName IN('Adbri
Masonry NSW');'
View 12 Replies
View Related
Jun 19, 2007
Attached is a screenshot of the relationships in a database I built a couple of years ago. It's worked absolutely fine in Access 2003 and currently has over 18,000 customers with associated information in it.
However, when I open the database in Access 2007 the performance is awful. All the forms are very slow to respond when tabbing between form elements. I've experimented by reducing the number of form elements calling on related data on a given page and whilst this improves performance it reduces usability - something I don't want to compromise on especially since Access 2007 should be able to cope with this.
My next question is therefore whether I've got the most efficient underlying table design and I can't see any other way of doing it than my current method so I'd be grateful for any feedback or advice anyone has.
View 2 Replies
View Related
