I have a class in parse-server which has 20 columns. 6 of these columns has values but others not so in query result just these 6 value comes. Is there any way to retrieve other 14 values ? I just need keys of these 14 values
Query results will only have fields that are set for the object, so no, you cannot get all of the available fields by querying for objects. If you want all of the fields, you'll need to query the schema:
const schema = new Parse.Schema('_User');
const result = await schema.get();
console.log(Object.keys(result.fields));
Related
I'm trying to write a query where the order by clause depends on the value of a key named sortBy in a JSON column.
const userId = req.params.id
SELECT * FROM users
WHERE ...
ORDER BY (SELECT JSON_EXTRACT(preferences, '$.sortBy') FROM users where id=${userId})
I think the problem is that the subquery, which gets the value "last_active", which is one of the columns in the user table, is a text string enclosed in quotes, but the order by clause requires a string without quotes?
I am using Sequlize with PostgreSQL as database in a Node-Express app. My table has a column and it's type is array of string. My goal is to find rows that contains a given array in that column. Current query -
const response = await MyTable.findAndCountAll({
where: {
topics: {
[Op.overlap]: values
}
}
});
Now, some of the rows contains NULL as a value. My problem is, if I add null in values array, the query does not return the rows containing NULL value in that column.
For clarification, here in the target row, topic = {NULL,SOME_VALUE,OTHER_VALUE}
and in the query values = [null,'SOME_VALUE']. What am I doing wrong here?
Relatively new to Blue Prism,
I have a collection that looks like this, with 100+ rows:
Results
Answer
Timestamp
8 Apr 2021
Name
ABC
I'd like to manipulate the data such that if Results = 'Name', Get the Answer (aka ABC) and put it into a data item.
Is there any way to do this?
I understand I could hardcode i.e. Get value based on Row Index and Column Index, but my data is complex and may not always have the same rox index.
Can you use the collection filter to get a collection output? The utility has an action to filter where you can input a collection and then use
[FieldName] Like "some value"
This would result in every complete row in the collection that matches the filter.
Below is my example code:
db = QSqlDatabase.addDatabase('QSQLITE')
db.setDatabaseName('book.db')
db.open()
model = QSqlQueryModel()
model.setQuery("SELECT * FROM card")
self.tableView.setModel(model)
I am using QSqlQueryModel, Qtablevie, Sqlite3, and able to view all rows in my table. But i want to view only last two rows of my table which are newly inserted rows in to the table. The table has no "id" field and it has numaric and text fields. How is it possible?
Below is the table image:
If you want to get the last 2 elements ordered by any field that indicates the insertion order, in your case "rowid", then you have to use a filter in the SQL command like this:
model.setQuery("SELECT * FROM card ORDER BY rowid DESC LIMIT 2")
Another possible option is to filter the table using QSortFilterProxyModel but it is more inefficient.
Can you please provide the query to append data to an existing value in a column of type text? Something similar to this:
UPDATE cycling.upcoming_calendar SET events = events + ['Tour de France Stage 10'] WHERE year = 2015 AND month = 06;
The above query will update a list. My column datatype is text.
In my case, if the column "events" has a value, "Test" I want to update it to the value, "Test , Test1".
Appending data to a text column is not possible in Cassandra. The only possible options I can think of are
Option 1 : Change the column data type to List
Option 2 : Fetch the data from the column in your application and then append the new value to the existing value, and finally update the DB.