sequence Questions
11
Solved
This problem is also known as 'transforming a "start-end" dataset to a panel dataset'
I have a data frame containing "name" of U.S. Presidents, the years when they start and end...
9
I have the data.frame below. I want to add a column 'g' that classifies my data according to consecutive sequences in column h_no. That is, the first sequence of h_no 1, 2, 3, 4 is group 1, the sec...
5
I have a vector of numbers
x <- c(2,5,1,6)
and I am trying to generate a sequence of values -- starting from 1 -- between and including the values in x so that I am left with the following s...
7
I am creating sequence in SQL Server with the following code. But it displays error as unknown object type. Please give a solution
Here's my code :
create sequence seqval start with 100 increment...
Airplane asked 23/3, 2013 at 8:2
8
Solved
Is there an SQL instruction to retrieve the value of a sequence that does not increment it.
Thanks.
EDIT AND CONCLUSION
As stated by Justin Cave It's not useful to try to "save" sequence number...
2
Solved
Rich Hickey's Strange Loop transducers presentation tells us that there are two implementations of map in Clojure 1.6, one for sequences in clojure.core and one for channels in core.async.
Now ...
Eskridge asked 30/10, 2014 at 12:23
2
Solved
my %f;
for $*HOME.dir() -> $file {
my $filename = $file.basename;
%f{$filename}.push: $file, rand;
}
my $p = %f.pick; # just need any old random element
say $p.^name;
say "{$p.values.^nam...
7
Solved
What is a fast/readable way to SELECT a relation from "nothing" that contains a list of numbers. I want to define which numbers by setting a start and end value. I am using Postgres SQL and SQLite,...
Cynar asked 16/7, 2013 at 10:0
2
Is there a simple (ie. non-hacky) and race-condition free way to create a partitioned sequence in PostgreSQL. Example:
Using a normal sequence in Issue:
| Project_ID | Issue |
| 1 | 1 |
| 1 | 2 |...
Digenesis asked 28/8, 2010 at 15:26
2
Solved
Let's say I have the following sequences:
var s1: seq[int] = @[]
var s2: seq[int]
var s3: seq[int] = nil
var s4: seq[int] = newSeq[int](4)
Which of these are typically considered "empty"? And wh...
6
Solved
I'd like to use SEQUENCE support in Apache Derby 10.7. I've created the sequence with the following statement:
CREATE SEQUENCE SAMPLE_SEQ AS INT MAXVALUE 999999 CYCLE;
How can I select next/curr...
5
Solved
I'm not entirely sure this is possible, and I definitely don't know what to search or how to concisely explain it, but this seems like quite a kotlin-y thing which I wouldn't be surprised if it was...
5
Solved
Sorry I am new to SQLPlus stuffs!
So here, I have a table called iowe, i have a four records pre-loaded into it. This is how it looks like:
NAME AMOUNT Serial Number
---------- ---------- ---------...
1
I'm working with integer sequences with non-repeating elements, for some reasons I am tring to remove duplicates by building a hashset.
int * a = {123, 145, 210, 77};
int * b = {145, 77, 123, 210};...
16
Solved
I have a table with over million rows. I need to reset sequence and reassign id column with new values (1, 2, 3, 4... etc...). Is any easy way to do that?
Ferriferous asked 13/1, 2011 at 8:37
38
Solved
How does Python's slice notation work? That is: when I write code like a[x:y:z], a[:], a[::2] etc., how can I understand which elements end up in the slice?
See Why are slice and range upper-bound...
6
Solved
I'm writing a new ASP.NET Core Web API, and one of my requirements is to be able to leverage EF Core 3.1 to grab the next value of a sequence defined in my SQL Server as the ID for a record I need ...
Shockley asked 11/3, 2020 at 21:16
12
I have the following code:
@Entity
@Table(name = "my_table", schema = "my_schema")
@SequenceGenerator(name = "my_table_id_seq", sequenceName = "my_table_id_seq",
schema = "my_schema")
public cla...
Andrew asked 9/4, 2010 at 9:37
5
Solved
I want to generate character sequence from 'a' to 'z'.
In scala, I can generate character sequence very simply:
('a' to 'z')
But in clojure, I end up with the following code:
(->> (range ...
4
I have a web api post method that inserts a new row in my table in my Oracle database. I'm having trouble with the primary key of the table which is a sequence value. How do I do my_primary_key_seq...
Miguelinamiguelita asked 15/8, 2013 at 19:38
2
Solved
I've written a simple code:
sub euler-ex ($x) of Seq {
1, { $x**++$ / [×] 1 .. ++$ } ... Inf }
say " 5: " ~ euler-ex(5)[^20] ~ " = " ~ [+](euler-ex(5)[^20]);
The output:
5: 1 ...
Snowstorm asked 1/11, 2022 at 16:43
3
Solved
I want to add a sequence to a column that might already have data, so I'm trying to start it beyond whatever's already there. Assuming there already is data, I would like to have done it this way:
...
Beanstalk asked 5/5, 2016 at 18:23
6
Solved
Let's say that I want to generate a data frame which contains a column with
is structured in the following format.
2011-08-01
2011-08-02
2011-08-03
2011-08-04
...
I want to know if it's possibl...
10
Solved
I've got a list of objects List[Object] which are all instantiated from the same class. This class has a field which must be unique Object.property. What is the cleanest way to iterate the list of ...
Buchan asked 12/10, 2010 at 8:22
6
Solved
I want to infinitely repeat T elements in a Sequence<T>. This can't be done using kotlin.collections.asSequence. For example:
val intArray = intArrayOf(1, 2, 3)
val finiteIntSequence = intAr...
Luing asked 28/12, 2017 at 12:12
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