I am looking for a way to make custom primary keys for access tables. What I am looking to do is to make something like 'C01234'. The alphabet at the start has some purpose and hence has to be there.
I know there is a way to use an autonumbered PK field and make a custom field using DMax function. Something like this: Custom primary key for MS Access. But what I am looking for is to not use another field and generate the alpha numeric PK completely using code.
Is it possible using the Access macro? Is there any other way of doing this ?
If you use a form, then use the BeforeInsert event:
Dim Prefix As String
Dim Digits As Integer
Prefix = "C"
Digits = 5
Me!CustomID.Value = Prefix & Right(String(Digits, "0") & CStr(Val(Right(DMax("CustomID", "YourTable", "CustomID Like '" & Prefix & "*'"), Digits)) + 1), Digits)
Related
I'm new to writing apex triggers. I've looked through a lot of the apex developer documentation, and I can't seem to find the combination of functions that I should use to automatically trim characters from a text field.
My org has two text fields on the Case object, which automatically store the email addresses that are included in an email-to-case. The text fields have a 255 character limit each. We are seeing errors pop up because the number of email addresses that these fields contain often exceeds 255 characters.
I need to write a trigger that can trim these text fields to the last ".com" before it hits the 255 character limit.
Perhaps I'm going about this all wrong. Any advice?
You can use replace() function in Apex.
String s1 = 'abcdbca';
String target = 'bc';
String replacement = 'xy';
String s2 = s1.replace(target, replacement);
If you need to use regular expression to find the pattern, then you can use replaceAll()
String s1 = 'a b c 5 xyz';
String regExp = '[a-zA-Z]';
String replacement = '1';
String s2 = s1.replaceAll(regExp, replacement);
For more information please refer Apex Reference Guide
The following code I think that covers what you are searching:
String initialUrl = 'https://stackoverflow.com/questions/69136581/what-function-do-i-use-in-a-salesforce-apex-trigger-to-trim-a-text-field';
Integer comPosition = initialUrl.indexOf('.com');
System.debug(initialUrl.left(comPosition + 4));
//https://stackoverflow.com
The main problems that I see are that other extensions are not covered (like ".net" urls) and that urls that have a ".com" appearing previous to the last one (something like "https://www.comunications.com"). But I think that this covers most of the use cases.
Why not increasing the length of that specific field? Trimming the text might cause data loss or unusable. Just go to object manager find that object and that specific field. Edit field and increase the length.
In FileMaker Pro, when using number field, the user can choose to use a thousand separator or not. For example, if I have a database with a field for the price of an item, the user can either enter 1,000 or 1000.
I am using my database to generate an XML file that needs to be uploaded. The thing is, that my XML scheme dictates that only a value of 1000 is allowed and not 1,000. Therefore, I want to either automatically remove the comma, or (my preference in this case) alert the user when trying to enter a value with a thousand separator.
What I tried is the following.
For the field, I am setting Validation options. For example:
Require Strict data type: Numeric Only
Validated by calculation: Position ( Self ; ","; 1 ; 1 ) = 0
Validated by calculation: Self = Substitue ( Self, ",", "")
Auto-enter calculation: Filter( Self ; "0123456789." )
Unfortunately, none of these work. As the field is defined as a number (and I want to keep it like this, as I am also performing calculations based on this number), the Position function and the Substitute function apparently ignore the thousand separator!
EDIT:
Note that I am generating my XML by concatenating a string, for example:
"<Products><Product><Name>" & Name & "</Name><Price>" & Price & "</Price></Product></Product>"
The reason is that what I am exporting is dependent on the values in my database. Therefore, I am not using the [File][Export records...] function.
Auto-enter calculation will work, but you need to uncheck the box "Do not replace existing value of field" (which is checked by default).
I'd suggest using the calculation GetAsNumber(self) as the auto-enter calc. If it should only contain integers, wrap that in a call to Int()
I am using my database to generate an XML file that needs to be uploaded. The thing is, that my XML scheme dictates that only a value of 1000 is allowed and not 1,000.
If this is only a problem when you export, why not handle it when exporting?
If you are exporting as XML using XSLT, you can add an instruction to
your stylesheet to remove the comma from all number fields;
Alternatively, you can export from a layout where the field is
formatted to display without the comma and select the Apply current's layout data formatting to exported data option when
exporting.
Added:
Perhaps I should have clarified. I am not using the export function to generate the XML as there is some logic involved in how the XML should be formatted (dependent on the data that I want to export). What I do instead is that I make a string where I combine XML-tags and actual values from the database.
IMHO, you're making a mistake by not taking advantage of the built-in XML/XSLT export option. Any imaginable logic can be implemented this way, without burdening your solution with the fragile task of creating a valid XML.
In any case, if you're using the field in a calculation, you can replace all references to it with:
GetAsNumber (YourField )
to get an unformatted, numeric-only, value.
Your question puzzles me. As far as I know, FileMaker does not store the thousands separator, but rather offers it only as a display option.
That's also why those functions can't find it.
Are you sure you are exporting the raw data and not a "formatted as layout" variant?
I've research this topic extensibly and I'm asking as a last resort before assuming that there is no wildcard for what I want to do.
I need to pull up all the text input elements from the document and add it to an array. However, I only want to add the input elements that have an id.
I know you can use the \S* wildcard when using an id selector such as $(#\S*), however I can't use this because I need to filter the results by text type only as well, so I searching by attribute.
I currently have this:
values_inputs = $("input[type='text'][id^='a']");
This works how I want it to but it brings back only the text input elements that start with an 'a'. I want to get all the text input elements with an 'id' of anything.
I can't use:
values_inputs = $("input[type='text'][id^='']"); //or
values_inputs = $("input[type='text'][id^='*']"); //or
values_inputs = $("input[type='text'][id^='\\S*']"); //or
values_inputs = $("input[type='text'][id^=\\S*]");
//I either get no values returned or a syntax error for these
I guess I'm just looking for the equivalent of * in SQL for JQuery attribute selectors.
Is there no such thing, or am I just approaching this problem the wrong way?
Actually, it's quite simple:
var values_inputs = $("input[type=text][id]");
Your logic is a bit ambiguous. I believe you don't want elements with any id, but rather elements where id does not equal an empty string. Use this.
values_inputs = $("input[type='text']")
.filter(function() {
return this.id != '';
});
Try changing your selector to:
$("input[type='text'][id]")
I figured out another way to use wild cards very simply. This helped me a lot so I thought I'd share it.
You can use attribute wildcards in the selectors in the following way to emulate the use of '*'. Let's say you have dynamically generated form in which elements are created with the same naming convention except for dynamically changing digits representing the index:
id='part_x_name' //where x represents a digit
If you want to retrieve only the text input ones that have certain parts of the id name and element type you can do the following:
var inputs = $("input[type='text'][id^='part_'][id$='_name']");
and voila, it will retrieve all the text input elements that have "part_" in the beginning of the id string and "_name" at the end of the string. If you have something like
id='part_x_name_y' // again x and y representing digits
you could do:
var inputs = $("input[type='text'][id^='part_'][id*='_name_']"); //the *= operator means that it will retrieve this part of the string from anywhere where it appears in the string.
Depending on what the names of other id's are it may start to get a little trickier if other element id's have similar naming conventions in your document. You may have to get a little more creative in specifying your wildcards. In most common cases this will be enough to get what you need.
I m using a update Query.
i.e:-
UPDATE tbl_ecpuser
SET ecpuser_fullname = 'Operator',
ecpuser_password = encrypt(E'Op1111/1\1/1\1' , 'ENCRYPE_KEY', 'ENCRYPE_ALGORITHM'),
where ecpuser_key = '0949600348'
Query is Executing Successfully.
But when I m trying to retrive the value for the Column ecpuser_password, it
returns with some extra character (i.e-00)
The Query for the Retrive the Password is:-
SELECT
decrypt(ecpuser_password,'ENCRYPE_KEY','ENCRYPE_ALGORITHM') AS PASSWORD
FROM tbl_ecpuser
WHERE
ecpuser_key = '0949600348'
This query returens
"Op1111/1\001/1\001"
but it should return "Op1111/1\1/1\1" and I need this.
So can any body help me about this.
Thanks.
One place where PostgreSQL was not conforming to the SQL standard was the treatment of a backslash in string literals.
Since 8.2 a configuration property standard_conforming_strings is available that configures PostgreSQL to comply with the standard here.
If you set that to "on" '\1' is treated correctly as a string with two characters (one backslash and the character 1).
However if that is turned on, the prefix E enables escape sequences again.
So (if I understand your problem correctly) you should set standard_conforming_strings = on and specify the string literal without the leading E.
Seems like E'\1' is treated as chr(1) and returned accordingly.
You probably want: E'\\1'.
EDIT: I need to generate a string of 7 chars that is based on the id of the row. So knowing the id of the image and a secret key, i should get the generated string.
the string must contain chars from "a" to "z" and numbers from 0 to 9.
I have a dir that contains photos like this
dir/p3/i2/s21/thumb.jpg
the generated string is p3i2s21, then is used to calculate the path of the image.
EDIT:
currently im using the id of the image:
id = 55
then i modify and i get
path = 000000055
then path = "000/000/055"
then path = "000/000/055/thumb.jpg"
ready to use!
now i want something more clever because is easy to track down all the images from a server, because ids are sequencial: 1, 2, 3, 4, 5, 6...
so i must think of creating from 55 a string that is 7 char length and will not overlap with other numbers. I can even transform the 55 to 0000055 and from this convert to a 7 char length string using a secret string. then when i got the secret string and the id i want to get back that 7 char length string.
Is this possible? i was thinking about hases but they only uses 0-9 and a-e and are more chars.. :s
I think you would need to use a database to do this. You could generate random 7 char strings and store them in a table along with the path they are mapped to.
Aside from that, there's really no easy way you could reliably take an arbitrary path, "compress" it down to 7 characters, and then be able to get the path back again from those seven characters.
I would add a new column to your table to store a GUID value. This way, you have an identifier that's non-sequential.
If you can't use a GUID and really it need it 7 characters long ... well, what I would do is generate the GUID anyway, take the (first/last) 7 characters, make sure it's unique, and save it. If it wasn't unique, I'd generate another GUID until it was.
This is very similar to Eric's answer by the way; I just wanted to mention GUIDs specifically.