It may be that there is no unique column in a database. Then it will not be possible to create a Primary key based on a single column.In that situation a COMPOUND KEY has to be prepared by combining two or more columns.how this COMPOUND KEY is prepared.
View RepliesHai all,
i am creating one table like CREATE TABLE XX( CODE NUMBER, NAME VARCHAR(10).
I AM INSERTING THE 5 RECORDS LIKE
OUTPUT IS
--------------
CODE NAME
1 A
2 B
3 C
4 D
2 A
problem is There is no unique column in that table.
is there any unique column in ACCESS. like
for Exp: in SQLBASE is ROWID is unique column.
in ORACLE is ROWNUM is unique column.
pls help
Thanks & Regards
Narasareddy
I have a table with about 700 records in it that I import. In my code I am using Alter table to add a column called BlID. I want to populate each record with a unique number. Because of other things that are happening I cannot use auto number, so I am using the date (with the date, hours, min, and seconds). My problem is that I cannot think of a ways to loop through this and insert a the date and time in each record.
I am using MS Access 2007.
Here's my dilemma: I have a table that keeps track of job postings and how many people applied for each posting. So, for instance, I can have 20 people apply for a job posting say....on July 18. On another column I have the shift name for that posting such as DAY Shift. So, I have 20 people that have applied for the Day Shift on July 18.
What I'd like my combobox to show me in just one instance of July 18 in column 1 and one instance of Day Shift in column two. I have tried using the wizard and then going to the properties of the combobox and attempted to edit the SQL statement to use the DISTINCT value to no avail.
I am new to Access and am trying to reduce a dataset I am working with to make it managable for Excel. I have three columns which have three unique parameters and one column with numberical content.
Column A Column B Column C Column D
NJ Red Monday 10
NJ Red Tuesday 20
NJ Yellow Wednesday 30
NY Red Monday 35
NY Green Tuesday 40
NY Green Wednesday 60
I want to elimiate column C from the dataset, and sum column D for every unique combination of Column A & Column B. I have figured out how to reduce down the dataset to get a list of all unique combinations of Column A&B,what formula I can use in a query to sum column D on my table for every unique combination of column A&B. This is a simple SUMIF in excel, but my dataset is too large for excel.
So i have a access database with a main field that we can call vendor # (LIFNR) and another called Company code (BUKRS). There are multiple company codes under a single vendor #. Example:
LIFNR
BUKRS
0000010535
1010
0000010535
5060
0000010535
5610
0000010536
1010
0000010536
5060
0000010536
5610
What I am trying to do is create a 3rd column where i can have a unique row for each of these fields without it repeating. There is no unique identifier in this table and that is what i am trying to achieve.
Hello Everyone,
I've data already entered (access/tables) on two different computers, however for the clientid on one computer has a hypen (-) and on another - because of something they couldn't get the hypen to work - so they used the slash (/) my Q is: 1) can I search and convert these to one, 2) is it wise the have / or - in the id?
I wish to designate unique customer codes in my database during data entry.
For example;
Liz Stimp = LS1
Liz Stamp = LS2
Lyne Small = LS3
Lipo Suction = LS4
I have successfully linked the first and surname using a "Left 1st letter" in the expression but I do not understand how to add a 'unique' number to the code to give me the result I am after.
Expression so far is .....Left([First Name],1)+Left([Surname],1)
I'm writing a simple job scheduling database, so I've got resource availability (by week) and job list (by week). I've written a single-column query whose only output is a unique list of weeks with resources available, and another single-column query whose only output is a unique list of weeks with at least one job allocated.
How do I join these so that I can get a single-column list of weeks that have either (or both) of resources and jobs?
So Query1 returns:
25/08/2014
08/09/2014
15/09/2014
while Query2 returns:
01/09/2014
08/09/2014
15/09/2014
22/09/2014
I want query3 to return:
25/08/2014
01/09/2014
08/09/2014
15/09/2014
22/09/2014
I have read through just about every post on this forum related to "Unrecognized Database errors" and have not found a solution to my direct problem.
Stats:
Database is running Access2K on all machines; db is on network location, no sharing issues or permission issues have been identified, no other databases in this network location have had this problem. also, we have tried compact-repair and also have tried re-creating the database and neither have proved successful.
I can open the database just fine if I am the only one opening it. If someone else tries to open it once I have it opened one of the following occurs:
1. Nothing. Hourglass appears for a split second, then nothing happens.
2. Error message "unrecognized database format "mydb.mdb"" appears. If I click OK and both users close the db, it can be opened just fine again by the first user. It doesn't matterwho opens it first, but the second user gets this message.
Any ideas why this is happening?
Thanks!
I have 5 columns in ms access. They are as follows:
date_from, date_to, season_price, normal_price, actual_price.
However, I want to check if the sysdate is greater than date_from and less
than date_to then the value in the actual_price should be taken from the
season price for that record else the value should be taken from normal_price.
So, i would like to know how can do this? do i need to use visual basic?
I have no idea about visual basic. So, would like the complete way to do it.
Thanks
Is there a simple way of copying the same data down a column in Access similar to Excel with its Fill Down Column. I have tryed copying down a column and it only goes one cell at a time or if I copy 5 cells with the same data, I can copy it to 5 empty cells.
View 2 Replies View RelatedHi well as the title says i have a database with a LOT of tables, and i need to find the tables that contain a certain heading, eg reference 6, is there an easy way of doing this?
View 1 Replies View RelatedI have been working on a simple data base for some time now (beginner level) and am still trying to improve it. I would like to do something but before that I would like to have your opinion to know if it is even possible?I have a query QryMainReport:
Start Date/Time
End Date/Time
Employee
At the moment this is what the format of my report looks like (I removed other unnecessary fields):
StartTime----------EndTime---------------Employee
12/06/2014 01:00--12/06/2014 03:00------John Smith
12/06/2014 04:00--12/06/2014 06:00------Jane Doe
13/06/2014 02:00--13/06/2014 05:00------John Smith
13/06/2014 08:00--13/06/2014 08:00------Jane Doe
I would like to do as a report. (Dates would always be from Sunday to Saturday). I am not sure it is possible to do that. I suppose first it would mean:I would have to do a query to separate the times from the dates?I would have to find a way for Access to find the unique dates and unique names?Does it mean I have to use cross tab queries?
I am working on a database project where I will Select a record on a subform
See the picture attached.
I know that using DAO recordset, i can update the checkbox one by one, but it become way too long when I have thousands of record...
May I know if there is a way to Select entire column of the subform?
I have a form with lots of combo boxes and text boxes. They are all linked to various MS Access tables and some of the fields are mandatory. I would like do an check to see if all the mandatory fields are not null i.e. are populated with a value and then run an update query for my master table in the database to flag the records as being complete if all the mandatory fields are populated.
If (IsEmpty(tab1.cmb_a)) Then do something
But I am just blank at the moment on how to proceed, especially on how I can do all the checks and then populate the database.
I'm in the process of constructing a student database for my school which would track (in addition to detailed student information) the daily attendance of over 270 students.
It is my understanding that there is a limit of 255 field names per table, so I can't use the student names as field names, nor can I really use dates as this would not quite cover even a year.
Student ID and AttendanceDate as field names is also not really a feasible strategy, as each week this would eat up 1300+ rows, so I would run out of space in that direction as well.
My question is ultimately am I better off building this in excel 2010, or is there a way of doing this in access that I have overlooked?
How do I select the first column of a multi-column list box (called "List1") for a query.
A single column list box works fine.
Code:
SELECT Tble_Employee.Emp_No, [forms]![attendee_form]![list1] AS SelectedCourse
FROM Tble_Employee;
I am trying to run a simple update query to copy data from one column (Addrl1)to another column (Working_Addrl1) within the same file and I can't for the life of me figure it out. Then I need to repeat for addrl2 and addrl3 to working_addrl2 and working_addrl3.
View 7 Replies View RelatedHi all,
In the organisation that I work for employees get paid every 2 weeks on a Saturday. So for this financial year the pay period end dates have been 08/07/2006, 22/07/2006, 05/08/2006 etc
I have a column in an Access table listing various dates. I want the next column to be
populated with the next pay period end date after that date.
So if DATE is 05/07/2006 I want PAY PERIOD END to be 08/07/2006
and if DATE is 09/07/2006 I want PAY PERIOD END to be 22/07/2006 etc
How do I do this?
Kind Regards,
Matthew
I have created a cross tab to extract pipeline and sales for Q1 2014, Q2 2014, Q3 2014 & Q4 2014... the user can select the quater from a multivalued text box...
Now for the final output, have created another query which pull the above four quarter in each column from the cross tab...now the problem arises when i change the quarter to Q2 2014, Q3 2014, Q4 2014 & Q1 2014..it gives an error "Microsoft office Access database does not recognizes "Query name" as a valid field name or expression".
The error is because the second layer of query does not identifies Q1 2014.
How do i make access change the column automatically when the Q1 changes to Q2...
I need to input a string into a column named "EventType". The code should first check if the column "Agent Name" contains any strings. If there is none, it will input "IBM Director" into the EventType column.
Once it has looped through the agent names, the code will then loop through the Details column and input into EventTypes based on what is displayed within the string.
These are the codes that I am using to achieve this, however nothing is being input into the EventType column.
Code:
Private Sub Command11_Click()
Dim dbs As DAO.Database
Dim rst As DAO.Recordset
Set dbs = CurrentDb
Set rst = dbs.OpenRecordset("Final")
[Code] ....
I think the problem lies with the code that checks the agent name. When I removed it, it managed to populate the EventType column based on the details. But I still need to find out how to check the agent name too.
i have a columns as 1. contactname, 2. firstname 3. lastname 4. email and in this columns some emails are not matching with the contactname or some time firstname or some time lastname so i need the to find out the un matched contacts from the database.
View 1 Replies View Relatedhi,
im wanting to reference a value of a dropdown which is already serving a function - the dopdown already has it's bound set to 3 but i want this new function to refercne the second column-
im tyring:
"Tutor = '" & Me.ComboStaff.Value(2) & "'"
which isn't working- how do i reference the second column of a dropdown if its bound to its third?
cheers
dubs
Hi. I have a question I'm hoping someone can help me with. I would like to take data from multiple columns and put the data into one column. Additionally, I do not want to exclude any data (union all) and I would like to group the resulting union by another field. For example:
Original data layout:
Column Headings: Sample Event, Depth 1, Depth 2, Depth 3,
1st Row Data: 1, 6, 9, 12, 9
2nd Row Data: 2, 7, 9, 8, 3
Desired data layout:
Column Headings: Sample Event, Depths
1, 6
1, 9
1,12
1, 9
2, 7
2, 9
2, 8
2, 3
So far I'm using the following SQL. What do I need to add or change to get my desired result of grouping the unioned depths by the 'sample event' field?
I appreciate any help anyone may have to offer. Thank you.
SELECT Depth1 AS Depths
FROM Depth_Velocity_Substrate_Correct
Union all
SELECT Depth2
FROM Depth_Velocity_Substrate_Correct
Union all
SELECT Depth3
FROM Depth_Velocity_Substrate_Correct
Union all
SELECT Depth4
FROM Depth_Velocity_Substrate_Correct
Union all
SELECT Depth5
FROM Depth_Velocity_Substrate_Correct
I want to convert a number column into a text column.
Number Column is called Customer.
Below I can't match to the other table containing the text column Customer No.
How can I convert columns in vba?
Code:
strSQL = "SELECT CALCULATED_Forecast_TNS.*, USEFUL.TRP_in_EUR " & _
" FROM USEFUL INNER JOIN CALCULATED_Forecast_TNS ON (CALCULATED_Forecast_TNS.[Reference No] = USEFUL.[Reference No]) AND (USEFUL.[Customer] = CALCULATED_Forecast_TNS.[Customer NO])"
Set qdf = CurrentDb.CreateQueryDef("REPLACABLES", strSQL)
DoCmd.RunSQL "UPDATE REPLACABLES SET CALCULATED_Forecast_TNS.TRP_in_EUR = USEFUL.TRP_in_EUR"