I have a client data base that has many values related to it.
Client name
Client address
Client code
Client dob
I need to show the client's name in table and allow user to search the client. I add the records to an array and show in a table.
for (Clientes *info in fetchedObjects10)
{
NSString* dict = info.name;
[dataArray addObject:dict];
}
I also create a filtered array for search. But when I search, how I would know which client is selected? How will get other info of that client?
For example, if I search for A in table then filter array is having only 2 elements. If I select the first item, how do I get that item's additional info like address, code, and dob?
As Per i understand your query. you can do it by two ways:-
1) pull all the database fields in the different array (client,client address,client code,client dob ).
search for the client array. The index it was successful pull the other fields from the array.
2) whenever you find the success in searching for the client. Again search the database with the query
sélect cient_address,client_code,client_dob from tablename where client_id=client;
Use the second method if you lot of data. but at the same time client should be the primary key for it.
Reply if there is some more need or your requirement is different.
Related
I'm trying to set up a webpage that communicates with a Moodle page. I need different data from a database activity and want to create new entries. Note that I am not talking about the SQL database in BG, it is the activity database in courses.
The information should be retrieved/transferred via the REST API, an HTML POST Request. My problem is that I don't know how to add a new record to the database activity because I cannot transfer the data array. Only the first parameter given appears in my database.
E.g. i tried ...&wsfunction=mod_data_add_entry&databaseid=10&data[0][fieldid]=66&data[0][value]=12&data[1][fieldid]=67&data[1][value]=test
And many other combinations. Always only the first parameter is shown in the database.
The docs tell me this (Pseudocode):
//The fields data to be created
list of (
object {
fieldid int //The field id.
subfield string Default to "" //The subfield name (if required).
value string //The contents for the field always JSON encoded.
}
)
Alternatively:
REST (POST parameters)
data[0][fieldid]= int
data[0][subfield]= string
data[0][value]= string
I cannot find anywhere else something called a "subfield".
Any ideas?
Okay, found it. You have to put your values in "", unless they are not a number. Seems like there is a connection with this special activity because you don't have to do it elsewhere.
I am using smartsheet as a database and I want to query the smartsheet by column name equals value like in sql db for example: To get the particular row of Employee sheet where salary equal to 10000. But documentation describes only how to get list of rows and how to update and delete rows by row id.
https://smartsheet-platform.github.io/api-docs/?java
What i want is to achieve without knowing id of the row. But I can do by search function by searching the salary of the employee
https://api.smartsheet.com/2.0/search?query=10000
and the response of above call will have row id and again i should make a call with rowid to get that row by below call which I don't want.
GET /sheets/{sheetId}/rows/{rowId}
Can anyone help me out?
Although some folks do try to use Smartsheet like a database, it's not really designed to be queried via API in the same way that you'd use transact SQL to query a SQL database.
I don't believe the scenario that you've described (i.e., using the Smartsheet API to retrieve row(s) in a sheet where [column value] = [specified value]) is possible. Instead, you'll have to use the API to get the data in the sheet (Get Sheet) and then in your code, query the data that you received in the API response (to identify the row(s) that match your query criteria).
What is the correct way of storing large lists in PostgreSQL?
I currently have a "user" table, where the "followers" column stores a list of the followers that that user has. This list is stored in JSON, and every time the server wants to add a new user to that list, it retrieves it from the database, appends the new user, and then replaces the old list with the new list.
The problem is that these lists tend to get quite lengthy, which might affect performance. Is it possible to simply append to the list directly via SQL without retrieving it and rewriting it later?
Use a separate table for followers. The table should have at least two columns: userid and followerid. And it's good practice to have a primary key for this table as well, so let's give it a "ufid".
You can do a select to get all the elements and compute the JSON string if your application needs it. But do not work with JSON or any other string representation of the list, as it defeats the purpose of a relational database.
To add a new follower, simply add a new record to the follower table with the userid; deleting and update are also done on the record level without working with the "other records".
If followers is a list of integers which are primary keys to their accounts, make it an integer array int[]. If they are usernames or other words, go with a string array character varying[].
To append to an array column you can do this:
UPDATE the_table SET followers = followers || new_follower WHERE id = user;
I am trying to work around a limitation that Filemaker 12 seems to have. In a value list that links to an ODBC attached SQL Server database, it doesn't display every piece of data. If there are 2 people with the same last name for example, it only displays the first person with that last name in the list. This is verified by the following in the Filemaker documentation (which I found after a lot of digging)
If the value list is defined to display information from two fields, items will not be duplicated for the field on which the value list is sorted. For example, if the value list displays information from the Company field and the Name field, and if the values are sorted by the Company field, only one person from each company will appear in the value list.
Portals on the other hand will find all the related data, I just don't understand how do something with the data once I get it in the portal. I essentially thus wish to use a portal AS my drop-down value list, and then to use it as I would have a value list (which is then to act as the key to do the rest of the lookups on the page to fill out the invoice.
The major issue here (other than this maddening choice Filemaker seems to make) is that the external file I am pulling the data from is an ODBC mounted SQL Server file, so I can't do something easy like a calculated field which would give me last name & " " & first which would make almost every person unique. Filemaker won't let me do that because it says I can't do that with a field that is not indexed. Any help would be greatly appreciated!
Assuming that we're starting with table MyTable and we're trying to get a ID from the People table for the selected person, which we'll call ID so that we can put it into MyTable::PersonID
Start by creating a new Table Occurrence of your People table and call it PeopleWhoCanBeSelected. If you want every person in the People table you can connect it to MyTable with the X relationship. If you want to show just a subset of the people you can build a different relationship.
Now, on a layout displaying records from MyTable you will make a portal showing records from the PeopleWhoCanBeSelected table.
In the portal put a button. When that button is pressed use the Set Field script step:
Set Field MyTable::PersonID to:
PeopleWhoCanBeSelected::ID
That should do it. You can make the button an invisible overlay on the entire portal record if you like, so that the user clicks on "the name" instead of "the button next to the name".
Now, if you want to pull additional data through to the MyTable record, you'll need to create a second Table Occurrence, called People with the relationship MyTable::PersonID = People::ID. Then you can get information on the specifically chosen person through that relationship.
I have a CoreData entity called Item with two values (well, two values relevant to this question).
Item
---------------
id - NSString
name - NSString
Every item has a unique ID and SHOULD have a unique name.
(BTW, the id is not used for CoreData it is used for communicating with the server).
There are a couple of items which appear to have duplicate names and I'm trying to find a query that returns all items that have an item in the table with a duplicate name.
Is this possible?
If so, can someone provide an NSPredicate (or method) to do this.
I do not think that it is possible to fetch exactly the items with duplicate names with a Core Data fetch request. (I think there was a similar question some time ago here on SO, but I cannot find it right now.)
You could fetch all items sorted by the name attribute. Then the duplicates can be found with a single loop over the result array.