Develop Reference

Dexiejs - Filtering returns single value

My dexiedb structure looks like below.
const db = new Dexie('shipment-execution');
db.version(1).stores({
root: '++id,shipmentid,stopid',
})
My IndexedDB will look like below
| id| shipmentid| stopid|
| 1 | 6000001 | 10 |
| 2 | 6000001 | 20 |
| 3 | 6000001 | 30 |
| 4 | 6000002 | 10 |
| 5 | 6000002 | 20 |
I am trying to get all the data which has shipmentid equal to 6000001. Each time it is returning only one record (the first record ).
db.root.where({shipmentid : '6000001'}).toArray().then((d)=>{
console.log(d);
})
output is only fetching the first record
| id| shipmentid| stopid|
| 1| 6000001 | 10 |
Please let me know, what I am doing wrong.

posgresql: Selecting specific column in an existing table and sort it according to absolute values in descending order?

I have the following table:
+----------+----------+---------+----------+----------+----------+
| Date | A | B | C | P | D |
+----------+----------+---------+----------+----------+----------+
|2019-01-10| -111,000 | 666,000 | 78,000 | 45 | 120,000 |
|2019-01-09| 555,000 | 55,000 | 100,000 | 55 | 700,000 |
|2019-01-08| 48,000 | 30,000 | 40,000 | 65 | 450,000 |
|2019-01-07| 600,000 |-450,000 | -800,000 | 90 | 980,000 |
+----------+----------+---------+----------+----------+----------+
May I know how to create a temporary table from the existing table above to become the table as below:
+----------+----------+---------+----------+----------+
| Date |Components| Values | Comp_no | P |
+----------+----------+---------+----------+----------+
|2019-01-10| A |-111,000 | 1 | 45 |
|2019-01-10| B | 666,000 | 2 | 45 |
|2019-01-10| C | 78,000 | 3 | 45 |
+----------+----------+---------+----------+----------+
Then sort it according to absolute values as below:
Give numbers to the largest value as '1', 2nd largest as '2' and so on.
The sorted_comp_no represents the order whereby the components is sorted where '1' is 'B', '2' is A and '3' is C.
+----------+----------+---------+----------+----------+--------------+
| Date |Components| Values | comp_no | P | sort_sequence|
+----------+----------+---------+----------+----------+--------------+
|2019-01-10| A |-111,000 | 1 | 45 | 2 |
|2019-01-10| B | 666,000 | 2 | 45 | 1 |
|2019-01-10| C | 78,000 | 3 | 45 | 3 |
+----------+----------+---------+----------+----------+--------------+
Use the comp_no and sort.
The components are now sorted according to their values.
+----------+----------+---------+----------+----------+--------------+
| Date |Components| Values | comp_no | P |sorted_comp_no|
+----------+----------+---------+----------+----------+--------------+
|2019-01-10| B | 666,000 | 2 | 45 | 2 |
|2019-01-10| A |-111,000 | 1 | 45 | 1 |
|2019-01-10| C | 78,000 | 3 | 45 | 3 |
+----------+----------+---------+----------+----------+--------------+
I've already created the temporary table template but still stuck in taking the name of specific column only (A,B and C) to be put into a column of its own category ignoring column D . Column P is brought into the temporary table but remain as is. There is also a dependency to the date column as there are multiple data of different date.
But the end goal is to be able to "sort specific column according to its absolute value at a specific date dynamically".

Get the sibling value of a SQLITE value

I have a SQLite Table:
+---------+-----------+-----------+-----------+
| userID | balance | ledger | lasttopup |
+---------+-----------+-----------+-----------+
| 1 | 90 | 780 | 12/10/18 |
| 2 | 180 | 0 | 4/11/18 |
| 3 | 270 | 12 | 13/10/18 |
| 4 | 360 | 109 | 11/10/18 |
+---------+-----------+-----------+-----------+
And I am accessing the column ledger via:
const conn = new require('better-sqlite3')('../../data/databases/casino.sqlite3');
const balances = conn.prepare(`SELECT * FROM "${msg.guild.id}"`).all().map(e => e.ledger)
And I want to get the userID which pertains to the respective ledger entry.
Visual:
Visualization
And then perform an action on the ledger value.
But I am unsure of how to retrieve the userID.
Any help will we appreciated!
[LIBRARIES]
DiscordJS
better-sqlite3
~Thanks

Running same query with different where clause for showing in different tabs on page

I have a list of companies like this
+-------+---------+------+---------------+
| Title | Address | City | CompanyTypeId |
+-------+---------+------+---------------+
| A | Address | City | 1 |
| B | Address | City | 2 |
| C | Address | City | 2 |
| D | Address | City | 3 |
| E | Address | City | 2 |
| F | Address | City | 2 |
| G | Address | City | 4 |
| H | Address | City | 5 |
| I | Address | City | 2 |
| J | Address | City | 6 |
| K | Address | City | 7 |
| L | Address | City | 2 |
+-------+---------+------+---------------+
I am tasked with seperating them according to their types and list them under seperate tabs on our page.
So basically I need to show a list of same query with changing where conditions.
I set the bootstrap tabs and was wondering if it was possible parameterize the variable and change it with tab changes on page. I guess I'll have to use AJAX but not sure if it's the right choice either.
And of course, if it's possible how can I do it?

How to parse data from a mysql tracking db?

I have a working event tracker that writes every event in a mysql table.
Table
id date userid event
5100 2014-03-25 14:18:55 user333 AI
5101 2014-03-25 14:19:02 user333 Click
5102 2014-03-25 14:19:02 user333 Click
...
Thats works so far very good. But now, I want to write a little report tool in node.js
I try to get the values with this SQL Query:
SELECT DATE_FORMAT(date,"%Y%m%d") AS date, event, count(*) AS count FROM databasetest WHERE date>="'+ daystartdate +'" AND date<="'+ dayenddate +'" GROUP BY YEAR(date), MONTH(date), DAY(date), event
Giving me this:
+----------+----------+-------+
| date | event | count |
+----------+----------+-------+
| 20140320 | AI | 6 |
| 20140320 | Click | 2 |
| 20140320 | swipe | 2 |
| 20140321 | Click | 6 |
| 20140321 | error | 5 |
| 20140321 | swipe | 2 |
| 20140321 | touch | 3 |
| 20140322 | AI | 3 |
| 20140322 | Click | 3 |
| 20140322 | error | 1 |
| 20140322 | mapsload | 3 |
| 20140322 | touch | 1 |
| 20140323 | AI | 2 |
| 20140323 | Click | 2 |
| 20140323 | touch | 5 |
| 20140324 | AI | 3 |
| 20140324 | Click | 1 |
| 20140325 | AI | 25 |
| 20140325 | Click | 48 |
| 20140325 | error | 16 |
| 20140325 | mapsload | 7 |
| 20140325 | swipe | 15 |
| 20140325 | touch | 32 |
+----------+----------+-------+
But I need the data in this form:
+----------+----------+-------+-----
| date | Click | AI | ....
+----------+----------+-------+-----
| 20140320 | 0 | 6 |
| 20140321 | 2 | 2 |
| 20140321 | 2 | 5 |
Is this possible with a SQL query or do I need to loop through the results in my javascript code. I tried many possible solution but didnt get it to work.
Thank you.

This is a very common question, keywords to search are "transpose" and "pivot". To save you the trouble, this is something that MySQL is not able to do. SQL Server (a MS product) can do this, though.
You will need to loop through the output and build the result set yourself.
var results = []
data.forEach(function(row, rowidx) {
results[row.date] = results[row.date] || {};
results[row.date][row.event] = results[row.date][row.event] || 0;
results[row.date][row.event] += row.count;
});