Queries :: Create And Order By Random Number In Query Field
Jan 2, 2015
I'm trying to create a query that generates random numbers for each record, sorts them by that field, then selects the top record. This should randomize the record being selected.
I can use the Rnd([ID]) function which does appear to generate a random number. Problem is that each time I exit the program and come back in, it always selects the same record. When I remove the Top = 1, to show all the records, every row does have a different random number but it does not appear to be sorting by this field.
If I run the query, here is the number I get: 0.98609316349029
Exit the program, restart, and run the query again: 0.98609316349029
If I refresh the query, the second and third time does appear to be random but the first result is always the same. how to generate truly random numbers?
Is it possible to run a SQL command to update a field within a table with random numbers?
More specifically - random long integers linking back to an ID (autonumber) field in another table?
Background to this is, I have multiple static data tables related to each other by long integer identifiers (autonumbers)
The structure is fine but I haven't been provided with the actual data yet - but for development purposes, I need to work on other functionality which requires that this data be present.
So I want to fill my table with dummy data such that I can go off and work on the remaining functionality, but then just go back and clear it all out once I get the actual data.
I have one 'main' static table, which links back to other tables, which I have already populated with dummy static (i.e. company names, locations etc) Now I want to go into my main table and populate those fields in each record with a random ID. I don't mind doing this field-by-field (there's only a handful) but I've a lot of records in there (~1000) so I'd rather not do this record-by-record.
I've been building a CRM in Access that allows for creating profiles for our accounts. When we add a new account, I'd like an Account ID to automatically generate and look like this: CRMXXXXX where the X's represent a random number. I originally wanted to set the field as autonumber to just count up, but unfortunately I need to append this value to another sales database we have; you can't store the text "CRM" with an autonumber in a table.
Right now, all I've done is place an equation in the default value of a textbox I have on my 'Add Account' form. I then made the control source of the text box the Account ID field. My equation is as follows:
="CRM" & CStr(Int(Rnd(Now())*10000))
This appears to work, as it generates a value in the correct format. However, I've realized that each time I open the CRM, the random numbers start over again and I run into issues of trying to create a new record with the same ID as a previously created record. I assume I need to incorporate some sort of timestamp to it in order to change it.
I have a database that I took over for a small group (it has about 400 records), and they want to add a field for "Member ID", to use for member badges and whatnot. A friend tried to help me by suggesting the "Change the starting value of an incrementing AutoNumber field" from the Access Help File, but I don't necessarily want incremental numbers, I just want a string of perhaps 8 numbers in no particular order, and obviously, unique to each record. I also don't understand how I can get that to work in pre-existing records...
So, what I'm wanting, in a snapshot, is: 83928475 John Smith 123 Any St 93827221 Mary Jones 678 Market St 19182734 Elvis Presley Graceland etc...
I was thinking that perhaps a formula could be created in a query? Heck I don't know! I only know enough about Access to be dangerous, so I appreciate anyone's help!
I have a form which allows the user to add new records to a table. After the user had entered all the information into the form, they click a command button to add the record. In addition to adding the new record, my command button runs an query which is supposed to generate a random number between 1 & 1,000,000,000 and update the record ID field with that number.
Here is the formula I have been using in the "update To" now of my query: Int((1000000000-1+1)*Rnd()+1)
My problem is that I keep getting duplicates. You would think that the chances of getting a duplicate number would be pretty small with this large of a range, but I get a duplicate almost every time.
I have tried indexing (No duplicates) the field in the table, but that did not work. When my query generated a duplicate number, the record was just not added to the table.
I also tried a two step approach: 1-Make a table of all in use record ID numbers from my table (tblIdNo) 2-Update new record with a random number that is not in tblIdNo
This was a no-go too
How to build an update query that will update each new record added to the table with a random number between 1 & 1,000,000,000 without any duplicates? This seems like it should be so simple, and I am starting to get really frustrated.
I would prefer to accomplish this through a query/queries (if possible) rather than with 100 lines of code. This database is not for me, it's for another group, and the individuals in this group are totally freaked out by code.
I am trying to use a join query to join two tables in order to create a form. I have done this on two other occasions in my database with no issues. Now it is only pulling the ID and I want it to pull the description. I have looked at the SQL view for the other queries that are similar as well as the design view and all of them are set up the same way with the exception that this new join query is pulling CertID rather than the CertDescription.
Is there any reason why it would be doing that? Is there an error that I could possibly be doing? It seems according to my notes that I have created all the queries the same but this last one does not pull the same info as the other queries.
Have a table (tblDailyResults) with 4 fields (ID,TestName,Result,TestDate). It contains a snapshot of about 1,000 records. All fields have data except "Result", which is null. I also have a table (tblResults) with 3 fields (ID,TestName,Result), it contains about 100,000 Records of historical results. What I need to do is Update the "Result" field in "tblDailyResults" with a randomly select value from tblResults where the two testname match.
what I then would do is copy that to a purchase order but remove the negative sign can this can the formula be changed in anyway to give the positive number .
Is it possible to do a criteria like the "Between" to pull data like a work order number?
Ex WO#: WO5551212
I would like to be prompted to enter a Work Order Number when I run a query, then have the query display all of the data for that particular work order number.
I am working on a form and need it to be able to generate a random number to use as an invoice number. The only parameters i need it to meet is that it is at least 5 digits in length. I was hoping i could use a button to make the number generate in a separate box.
I currently import data into a table and it it has a text field which looks like this: 12,345.67 GBP...I need to use a query to make this a number field so that I can sum it's contents. I've managed to remove the 'GBP' part but can't seem to get rid of the comma?
I have set up a basic database that has a customer table , orders table , join table and products table. I have created an invoice form that has customer details and then in a subform has the order ID and product ID , name , price and quantity.I have a text box on the form to which I am trying to output the sub total to when the form is launched(quantity X price for the current order).I was trying to create a query that will return the subtotal for an order.I had the query calculating the subtotal but I was then trying to get t the cost based on the order ID. I was then attempting to get the Order ID for the query from the open form by adding this to the criteria in the query:
i have a query which looks at 2 fields: "employee number" & "agency number", i would like the query to list the employee numbers in order first (1,2,3...) then the agency numbers in order (100, 101, 102...). ive changed the ascending/ descending order for them both but doesnt help. Its mainly the form that looks at this query i would like to fix so that is shows all employee records in order of employee number first and then underneath all agency numbers in order of their number (some employee numbers & agency numbers are null) hope this makes sense , any help would be great
I have a field that is giving me the number of business days between a period of time and then I want to subtract that number - the person's PTO time to see the actual days they were available...when I simply type the number in (see below) it works great but I want to set up a prompt that will ask me how many PTO Days to calculate as it will be different for each person I am quering...is this possible?
I don't know why is it so complicated to add an auto number field in a query. I would like to add a increment number (auto number) on each line and then an auto number on each product.
I use an append query to insert this new record into the table EVENTS_MAIN.
I wish to set the start time and end time for all event days in hours and minutes. I will use these entries for displaying start time and end time for each event days, to calculate daily total hours and event total hours later on.
Therefore, I wish to create a query that will display event date 1, event date 2 and event date 3, based on the number of the EVENT_total_days field, so I can set the start time and end time for each day separately.
Is it possible to "convert" or "switch" the number of the days into number of records? Can a query convert a field value into number of records?
I am trying to create a database to link to an online auction site (not ebay) and I want to create a query that randomly generates auction end time and auction length for all listings. I have tried int(rnd()) and various versions but can only generate the same number for all fields in the query.
The field SECL DDI has the users phone number unfortunately over time these have been entered in different formats so there are 5 digits, 6 digits, 7 digits etc...Can I run a query that counts the number of digits in each filed and then tell me how many of each exist
I'm trying to insert 10% of a dataset from dbo_billing into another table Random_Temp. Another form is open when this query is to be ran that passess in the billyear and billmonth... I'm sure it's a syntax issue as I can isolate the random number part and it displays the appropriate data, I just can't re-write it to insert into the other table:
INSERT INTO Random_Temp ( indx, peopleId, audited ) SELECT TOP 10 PERCENT b.indx, b.peopleId, b.audited FROM dbo_Billing AS b WHERE (((b.billYear)=[Forms]![billing]![billyear]) AND ((b.billMonth)=[Forms]![billing]![billmonth]) AND ((b.recertifying)=-1)) ORDER BY Rnd(-(1000*b.indx)*Time());
I am using an attendance management system with a DB in Access. Now I want to create APPLICATION_ID automatically by continuing number. For example, I have a table called "LEAVE_APPLICATION" and the structure is below:
Now I want to update the table by adding the below data
00360 2 00360 2 01390 14 01390 1
How can i create the APPLICATION_ID field auto generating while pasting additional data. It should be numbering continually from the last record (Grouping to be applied for EmpID)like below:
Quick question, how do I have access generate a random number between 1 and 8? I want it to generate either a 1,2,3,4,5,6,7, or 8. (no zero, no nine)
Expr1: Fix(Rnd(8-1)*10*Rnd()) is what I have been using, but this always generates the number 2? I do want the decimals to be rounded to the nearest integer, thus I have Fix.
If someone could please help me, it would be greatly appreciated! Thanks in advance.
