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How can I know if a table is already arranged in ascending order in MySQL?


How can I know if a table is already arranged in ascending order in MySQL?

By : Arunprasanna S P
Date : November 24 2020, 03:41 PM
will help you Data in a table is not arranged in any order.
You have to explicitly specify an order when selecting the data. If you do not specify an order when selecting the data then the returned order is neither predictable nor reliable.
code :


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Order MySQL Table by Ascending Order (Numbers)

Order MySQL Table by Ascending Order (Numbers)


By : 王文耀
Date : March 29 2020, 07:55 AM
like below fixes the issue The best solution is to make the datatype of column est_dily_pple numeric. Or else you can try this :
code :
SELECT * FROM publisher ORDER BY CAST(est_dily_pple as SIGNED INTEGER) ASC
MySQL query to maintain sort-order in ascending order for self-referencing table

MySQL query to maintain sort-order in ascending order for self-referencing table


By : Martin Žilinský
Date : March 29 2020, 07:55 AM
hop of those help? I am using MySQL 5.6.17. , Sample data:
code :
CREATE TABLE t
    (`id` int, `title` varchar(10), `parent` varchar(4), `sort_order` int)
;

INSERT INTO t
    (`id`, `title`, `parent`, `sort_order`)
VALUES
    (1, 'Item 1', NULL, 1),
    (2, 'Item 1.1', '1', 1),
    (3, 'Item 1.2', '1', 4),
    (4, 'Item 1.3', '1', 5),
    (5, 'Item 2', NULL, 3),
    (6, 'Item 2.1', '5', 1),
    (7, 'Item 2.1.1', '6', 4),
    (8, 'Item 2.1.2', '6', 5),
    (9, 'Item 2.3', '5', 3),
    (10, 'Item 2.1.3', '6', 3)
;
update t
join (
  select 
  t.*,
  @so := if(coalesce(parent, '0') != @p, 1, @so + 1) as new_sort_order
  , @p := coalesce(parent, '0')
  from t,
  (select @so := 0, @p := null) var_init
  order by parent, id
  ) sq on t.id = sq.id
set t.sort_order = sq.new_sort_order;
select * from t;

| ID |      TITLE | PARENT | SORT_ORDER |
|----|------------|--------|------------|
|  1 |     Item 1 | (null) |          1 |
|  2 |   Item 1.1 |      1 |          1 |
|  3 |   Item 1.2 |      1 |          2 |
|  4 |   Item 1.3 |      1 |          3 |
|  5 |     Item 2 | (null) |          2 |
|  6 |   Item 2.1 |      5 |          1 |
|  7 | Item 2.1.1 |      6 |          1 |
|  8 | Item 2.1.2 |      6 |          2 |
|  9 |   Item 2.3 |      5 |          2 |
| 10 | Item 2.1.3 |      6 |          3 |
How are keys arranged in ascending order in stl maps?

How are keys arranged in ascending order in stl maps?


By : Debb Picariello
Date : March 29 2020, 07:55 AM
I hope this helps . Good question. A map is indeed implemented as a balanced tree (usually implementations choose a red-black tree). All nodes throughout the tree hold values (i.e. not just leaf nodes), and they're sorted such that the "left" branch from any node contains only values "less than" the node's own value, with the "right" branch containing greater values.
For example:
code :
           m
         /   \
        f     q
       / \   / \
      c   h o   t
         /
        g
ggplot Bar graph, month is arranged alphabetically (ie Apr, Aug,Dec). I want it to be arranged in ascending order (ie Ja

ggplot Bar graph, month is arranged alphabetically (ie Apr, Aug,Dec). I want it to be arranged in ascending order (ie Ja


By : Mai Văn Quốc
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Data set: , Assuming you have something like this:
code :
dataset <- data.frame(Month = as.factor(c('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun')),
                 A = c(1, 2, 3, 4, 5, 6),
                 B = c(22, 33, 44, 55, 66, 77))

u <- dataset %>% tidyr::gather(var, val, A:B)
u$Month <- factor(u$Month, levels = u$Month[order(u$val)])

ggplot(data=u,aes(x = Month, y = val, fill = var)) + geom_bar(stat = 'identity', position = 'dodge')
PHP MYSQL : way to list table in ascending order

PHP MYSQL : way to list table in ascending order


By : Kokia
Date : March 29 2020, 07:55 AM
I hope this helps . we use " SHOW TABLES FROM " to list tables from database but there is no way to list table in order (ORDER BY dont work with tables) is ther any other way to arrange it ?? can we do this with php :if yes please give me hint to do it thank you , You can use INFORMATION_SCHEMA:
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