Format Vs Validation - Exactly How Records Of A Particular Fields Are Stored
Jul 24, 2015
Just curious how access stores records. Say, data type of Text, field name "FullName" when entering data via forms normally we use formatting or enforce data entry with validation rule to check say if user typed in propercase or cases that we desire to see. So far so good. When text format masks is applied for instance > or < , does the actual data or the formatted data is passed to the table layer. Alternatively, table layer format vs form layer format which one of the methods dictate what exactly is stored under the table.
I have a problem converting text to a real date value so I can do some calculations. I have a query that brings in data from an external data source. It appears the data is stored in the external table in text format and looks like this:
20050902 15:40:41
I have tried CDate to convert the text to a date/time format, but no luck. Any ideas?
I have a date field in a table which is Short Date with an input mask of 99/00/000;0;_
I do not want (for reasons too complicated to go into here) to put this as a required field even though it is a required field (makes sense from my end!).
If I set Required Field to "No" what format can I put in the validation rule field so a message (from my validation text field) comes up if the field is left blank??
Basically in my order details table i have the following fields
Product Unit Size
At the moment i have the Product field with a dropdown that gives me all the products from my ProductT. But once i choose the correct product in the unit field it gives me all the possibilities of every product not just the units associated with that product. ie
ProductT Grasshopper Box1000 Adult Grasshopper Box1000 Subadult Worm 10pz Big
When I select the grasshopper product and move on to the unit field i also get "10pz" option but this is not a product available.
How do i set up validation of the fields Unit and size based on another fields data?
Is there a Input Mask or Rule Validation that would automatically or require user to input data into Access field in a proper case format? Such as my text would be "My Text" when viewing the actual table? If so how would you do it when in Design View of Table.
I have developed a database but have had difficulty with sorting data within subform of a main form. The subform displays the related tasks that correspond with main form that has been selected. Within the main form I have also created a text field that defines a particular sorting sequence of the tasks found within the subform which is titled Task Sequence. What I would like to do, is use the Task Sequence field to sort the order of tasks within subform. I have tried: IIf([ID] Is Null, 0, Val([Task Sequence])) within the Advanced filter/sort but either it shows only the first task defined in the Task Sequence or it wants to filter the main form and not the subform.
I am building a scoring system for an Archery Tournament and am trying to add some extra validation between two fields.I want to check the contents of one field against another.So if Field A has an even value, then Field B must also be even, and if Field A has an Odd value, Field B must be odd.Would it also be possible to add an exception such that if Field B = 0 then the validation rule does not apply?I am only a very occasional user of Access, and don't have a very good grasp of the code structure in it, but am prepared to try and learn.
I am using Access 2007. This is the problem; I have a warehouse divided into four departments North, East, South, and West. Each department is assigned its own storage location range North is N1-N1000, East is E1-E1000, South is S1-S1000, and West is W1-W1000. On the access input form of my database are two fields, one combo box field for Department and one combo box field for location stored.
When the user is updating the data base for parts received or shipped, the user must enter the department and location stored to correctly debit or credit that department. The location stored entered must be assigned to the department. (Example: dept. is north and storage location is N65, the user enters D65 instead, error message is displayed, "you have entered the wrong location").
What I need is instructions how to write the code to check the fields to verify location stored matches department, and display a warning message. How do I do this? I have a table with department names and storage location ranges.
Windows XP MS Access 2007 VBA experience is very limited
So in my forms 'BeforeUpdate' property I want to validate whether a condition is met. The condition is whether 'any one of 4 fields contains something (text or number)'. I have written this code for validating a single condition and it alerts if the field is left blank. This code returns a warning message when the field is blank.
If Me.[txtObjective] & "" = "" Then MsgBox "A 'Problem Objective' is required, please complete this field.", vbOKOnly Me.[txtObjective].SetFocus Cancel = True
[code]...
how to write the SetFocus part. And I dont know if this is correct anyway.
I have a table of animals each with a unique ear mark. I also have a table of vaccination records. When adding new records to the vaccination table via a form i would like a validation check on weather the animal actually appears in the animal table or not with an appropriate error message. Please help.
I'm a BA so i'm converting my excel issues list into a database with a front end where i can create new issue records this uses a form that sits on top of the issues_table.
Howver, i have created a table called Projects and a table called Test_Plans
Each issue is logged against a project and a test plan. Lets say ProjectA has TestPlan1 and ProjectB has Testplan2.
On my issues form, i can select ProjectA in the project field.
In the Testplan field i can select EITHER TestPlan1 or Testplan2
Testplan1 is the only valid entry.
How do i
a) Once I have selected ProjectA in the Project field only display Testplan1 in the Testplan field?
or
b) If the user tries to enter testplan2 for it to error?
I've tried creating a query and linking the controlsource field to it but it doesn't like that!
I am trying to create a validation rule whereby If a box is checked it makes sure that before saving and moving to the next form several, though not all fields are valid.
Ive tried many variations of:
([x] Is Not Null) OR ([Y] is Null) And ([x] Is Not Null) OR ([Y] is Null] etc etc for the fields I need covered.
Either the rule doesnt work at all or else all data input is invalid!
What code should I use to set a specific field format using the on load event. For example my database is used by different countries. in their setup the can choose to use Euro or GBP as Currency. When they log on I set this as a global constant (GbCurrency) Depending on their setting when they load certain reports or forms I want certain fields to be formatted either as "currency" or as "Euro" in the format settings with the decimal place as 2.
i have enterd the following code but it doesn't work.
Any suggestions?
On load event
If gbCurrency = "Euro" Then Me.labour_rate.Format = Euro Me.labour_rate.DecimalPlaces = 2 end if
No records are being imported. I am getting a validation rule violation but I don't have any rules. The forename and surname are straightforward text boxes and the ID is an autonumber.
Code:
INSERT INTO table_candidate ( Cand_ID, Cand_forename, Cand_surname ) SELECT candidates.Cand_ID, candidates.Cand_forename, candidates.Cand_surname FROM candidates;
1. Is your append query trying to assign values to the primary key field? Could that be the source of the duplicate?
Yes but there are no duplicates
2. Do you have any other fields that are "Indexed: No Duplicates"? Any compound indexes?
No
3. Is the query assigning values to a field that is a foreign key to another table? Is it possible that these values do not match the values in that other table?
No. All child tables are empty.
4. Is there a validation rule on the table itself?
What this means.
5. Does the query attempt to assign a string with no characters in it (as opposed to a Null value) to a text field that has its Allow Zero Length property set to No?
Both fields are text and all records contain information
Required = No Zero length = Yes
6. Is there a Default Value in one of the fields that is NOT being assigned by the query? For example, a foreign key with zero as the Default Value?
No
7. Is there data that is outside the range a field can accept, e.g. an integer larger than 32767, or a Null to a Yes/No field?
The length of the text in each record is not greater than the set limit
8. Is one of the query fields arriving in a format that Access is not understanding, e.g. for a date, or for a currency?
I am trying to sum 3 different time fields together in a report that all are the same format but it wont allow me to.
The expression i have built is =Sum([ACDTime]+[AgentRingTime]+[OtherTime])
but I get back a error message saying...
"This expression is typed incorrectly, or it 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."
I have a table that contains the following;Company name, PositionID, Firstname1, Lastname1, title1, gender1, Firstname2, Lastname2, title2, gender2, Firstname3, Lastname3, title3, gender3 [...up to 50 names]
The data is uploaded to my table from a 3rd party database source via .csv file.I can capture up to 50 names, titles and gender per record. I would like to display this data in a table/array like format. I'm not too good at VBA but I can use expressions for unbound fields.I have attached a file that shows the data in a format I would like to see in Access displayed in a form.
Both tables have a SSN field with the following format:
000-00-0000XX (xx stand for two additional characters)
I have a search form with a textbox that I use to type criteria to open a form. The text box has the following SSN input mask: 000-00-0000CC;0;_ This allows me to return data even if I have a part of the SSN
I have now placed a button which verifies if the SSN I will type in the textbox already exists in table History. I am having problems with the SSN format as I have to type the whole SSN while I would like to type part of it (like the textbox input mask).
If Not IsNull(DLookup("[SSN]", "History", "[SSN] = '" & Me![txtbox] & "'")) Then
I have two tables in a query joined by a ID field. The problem is in the one table the ID fiels is a text format and in the other table its a number format so the query builder doesnt like that and gives me the Type mismatch in expression error.
There's no way around it though; i need it to be those formats in its respective tables for reasons i wont go into here for simplicity.