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Channel

Senior SQL Developer

@seniorsql

On this record: Topic · Growth · Engagement · What this channel posts · Posts · Posts recorded as deleted · Citations · Telegram's recommendations · Cite this entry

14,158subscribers

-322 since we began measuring on 7 August 2026

Risers and fallers across the register · movement among entries of 10,000–31,623.

Register entry

Telegram ID-1001468396285
TypeChannel
Username@seniorsql
Description№ 4931128435 Изучаем SQL. По вопросам сотрудничества: @adv_and_pr
CreatedBetween 1 April 2019 and 30 September 2021 — estimated from Telegram’s id allocation, not measured. How this range is calculated.
First recorded7 August 2026
Last confirmed live8 November 2026
Measurements held57
Confirmed unchanged1 time, most recently 8 November 2026
On Telegramt.me/seniorsql

Topic

Technology — a classification, not a measurement. An on-box language model (Qwen3.6-35B-A3B-FP8, prompt version 1) read this channel’s own recent posts on 10 September 2026 and assigned it the closest of 31 fixed categories, at 48% confidence. This is a model’s judgement about what the channel is likely to be about, not a fact this register measured the way a subscriber count or a view count is measured — it can be revised on a later pass, and it carries no weight anywhere else on this page. How this classification works, and the other topics.

Growth

14,15814,48014,3197 August 2026 — 14,480 subscribers7 August 2026 — 14,480 subscribers8 August 2026 — 14,477 subscribers9 August 2026 — 14,472 subscribers10 August 2026 — 14,466 subscribers11 August 2026 — 14,464 subscribers12 August 2026 — 14,463 subscribers12 August 2026 — 14,456 subscribers14 August 2026 — 14,449 subscribers15 August 2026 — 14,443 subscribers17 August 2026 — 14,440 subscribers18 August 2026 — 14,438 subscribers19 August 2026 — 14,431 subscribers21 August 2026 — 14,425 subscribers23 August 2026 — 14,420 subscribers24 August 2026 — 14,416 subscribers25 August 2026 — 14,413 subscribers26 August 2026 — 14,411 subscribers28 August 2026 — 14,409 subscribers29 August 2026 — 14,408 subscribers30 August 2026 — 14,402 subscribers31 August 2026 — 14,399 subscribers1 September 2026 — 14,400 subscribers2 September 2026 — 14,397 subscribers4 September 2026 — 14,387 subscribers7 September 2026 — 14,377 subscribers10 September 2026 — 14,366 subscribers12 September 2026 — 14,361 subscribers13 September 2026 — 14,355 subscribers15 September 2026 — 14,349 subscribers17 September 2026 — 14,346 subscribers28 September 2026 — 14,318 subscribers5 October 2026 — 14,297 subscribers9 October 2026 — 14,280 subscribers13 October 2026 — 14,269 subscribers14 October 2026 — 14,264 subscribers15 October 2026 — 14,260 subscribers18 October 2026 — 14,257 subscribers19 October 2026 — 14,254 subscribers20 October 2026 — 14,249 subscribers22 October 2026 — 14,241 subscribers23 October 2026 — 14,237 subscribers24 October 2026 — 14,236 subscribers25 October 2026 — 14,226 subscribers26 October 2026 — 14,216 subscribers27 October 2026 — 14,212 subscribers28 October 2026 — 14,209 subscribers29 October 2026 — 14,207 subscribers30 October 2026 — 14,203 subscribers31 October 2026 — 14,198 subscribers1 November 2026 — 14,194 subscribers2 November 2026 — 14,190 subscribers3 November 2026 — 14,180 subscribers4 November 2026 — 14,176 subscribers5 November 2026 — 14,172 subscribers6 November 2026 — 14,167 subscribers8 November 2026 — 14,158 subscribers7 August 20268 November 2026
57 measurements spanning 93 days, net -322. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 14,110–14,528 and does not start at zero.
Measurement log — every subscribers count we have recorded, most recent 20 of 57
Measured (UTC)SubscribersChange
8 Nov 2026, 00:0514,158-9
6 Nov 2026, 20:1914,167-5
5 Nov 2026, 18:4614,172-4
4 Nov 2026, 21:1614,176-4
3 Nov 2026, 18:2514,180-10
2 Nov 2026, 14:5714,190-4
1 Nov 2026, 14:1814,194-4
31 Oct 2026, 17:5014,198-5
30 Oct 2026, 15:5614,203-4
29 Oct 2026, 12:3614,207-2
28 Oct 2026, 10:0114,209-3
27 Oct 2026, 08:2714,212-4
26 Oct 2026, 08:4814,216-10
25 Oct 2026, 06:4614,226-10
24 Oct 2026, 07:2714,236-1
23 Oct 2026, 09:5114,237-4
22 Oct 2026, 08:2814,241-8
20 Oct 2026, 00:2914,249-5
19 Oct 2026, 01:2814,254-3
18 Oct 2026, 04:0614,257first reading

Engagement

58 posts held, back to 6 July 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 64 pages of Telegram’s post history, 20 posts per page.

ERR · 30 days
6.68%
avg views ÷ 14,158 subscribers
Avg views / post
945
21 posts measured
Reaction rate
—
this channel exposes no reaction counts
Posts in window
21
of 58 held

ERR is average views per post over the last 30 days divided by subscribers, the definition TGStat uses, so this figure is comparable with the one you will see elsewhere. It falls structurally as a channel grows: a high ERR on a small channel and a low one on a large channel describe reach mathematics, not quality. We publish the figure and the sample it came from and pass no verdict on it.

ER is defined industry-wide as (forwards + reactions + comments) ÷ views — note the denominator is views, not subscribers. Telegram’s public web preview carries views and reactions but not forward or comment counts, so the reaction rate above is the reactions term only and is therefore a floor: the true ER for this channel is higher by an amount we have not measured and will not estimate.

What these figures were computed from
WindowRolling 30 days · latest post in window 6 November 2026
Posts held58 (6 July 2026 – 6 November 2026)
Views total19,853
Reactions total—
Forwards / commentsnot exposed by the public surface — not measured, not estimated
Readings taken8 Nov 2026, 18:16 UTC

Views are a single reading per post, taken at the time above. A post published in the last day or two is still accumulating views, which pulls the 30-day average down slightly. That is a property of the standard definition rather than a fault in it, so we keep the definition rather than “correcting” the number into something nobody can reproduce.

Precision. Telegram publishes view counts on its public widget in short form — 8.12K, 3.7M — so any reading at or above 1,000 reaches us rounded to three significant figures, and only counts below 1,000 are exact. Averages and rates derived from them are shown to the same precision rather than to the unit: a figure like 3,701,250 would assert digits nobody measured.

Reaction counts are published per emoji and rounded the same way, so a total below 1,000 is exact and a larger one is a sum that may carry a rounded component from each emoji above 1,000. Because it is a sum, it does not look rounded — read a large reaction total as three significant figures per contributing emoji rather than as the figure it prints.

What this channel posts

Photos
≈1,250
Videos
≈2
Links
≈524

Lifetime counters from Telegram’s own channel header, read 8 November 2026 — not the date at the top of this page, which is when the subscriber count was last read. A count marked ≈ was rounded by Telegram before we ever saw it — t.me prints these counters in full below 1,000 and to three significant figures above, so ≈142,000 means somewhere between 141,500 and 142,499.

Recent posts

Telegram’s own ‘edited’ marker: 0 of 21 posts held from the last 30 days (0%) carried it when this register last read them. The marker says a post was changed after publishing, not what it said before — this register holds the earlier wording only where an edit fell between two of its own reads (see the edit ledger and how it is measured).

6 Nov 2026, 19:45 UTC429 viewsread 8 November 2026

#вопросы_с_собеседований Какая польза от функции NVL()? Функция NVL() является частью базы данных Oracle и преобразует значение NULL в другие значения. В SQL Server, эквивалентная функция - ISNULL(), а MySQL - IFNULL().

5 Nov 2026, 20:59 UTC600 viewsread 8 November 2026
Photo

ORDER BY ORDER BY используется для сортировки результатов запроса по убыванию или возрастанию. ORDER BY отсортирует по возрастанию, если не будет указан способ сортировки ASC или DESC. Рассмотрим пример: Выведем список курсов по возрастанию и убыванию количества кредитов.

4 Nov 2026, 19:53 UTC728 viewsread 8 November 2026

Решаем загадку Джиндоша на SQL в пять строчек Смотреть статью

3 Nov 2026, 20:26 UTC781 viewsread 8 November 2026

#вопросы_с_собеседований Как работают подстановочные знаки? Это специальные символы, которые нужны для замены каких-либо знаков в запросе. Они используются вместе с оператором LIKE, с помощью которого можно отфильтровать запрашиваемые данные.

2 Nov 2026, 19:58 UTC871 viewsread 8 November 2026
Photo

Функция DAYNAME() Функция DAYNAME() возвращает имя дня недели для заданной даты. Синтаксис: DAYNAME(date).

1 Nov 2026, 20:55 UTC902 viewsread 8 November 2026

Как намеренно расставленные ошибки помогают сделать SQL-код легко поддерживаемым В этой статье мы рассмотрим различные способы вызова ошибок, которые помогут упростить поддержку SQL-кода в будущем. Смотреть статью

31 Oct 2026, 20:24 UTC951 viewsread 8 November 2026

Агрегатные функции Это не совсем основные команды SQL, однако знать их тоже желательно. Агрегатные функции используются для получения совокупного результата, относящегося к рассматриваемым данным: • COUNT(col_name) — возвращает количество строк; • SUM(col_name) — возвращает сумму значений в данном столбце; • AVG(col_name) — возвращает среднее значение данного столбца; • MIN(col_name) — возвращает на…

30 Oct 2026, 19:52 UTC932 viewsread 8 November 2026

Создание, Подключение и Удаление Базы Данных - Уроки PostgreSQL В этом вводном уроке по PostgreSQL, мы создадим базу данных, соединимся с ней и рассмотрим как работает ее удаление, все это при помощи SQL Shell (командной строки PostgreSQL или psql) Смотреть видео

30 Oct 2026, 15:01 UTC971 viewsread 8 November 2026
Photo

Claude начал банить россиян по паспорту Anthropic массово просит пройти верификацию по документам. После российского загранпаспорта аккаунт блокируют практически сразу. Апелляции не помогают. А в CatCode паспорт никто не спросит. CatCode - десктопный ИИ-агент для разработки. Внутри Claude Fable, GPT, Grok и еще 10+ моделей в одной подписке. Модель можно выбрать вручную или доверить умному свитчеру: рутину он отдас…

29 Oct 2026, 20:47 UTC904 viewsread 8 November 2026
Photo

#вопросы_с_собеседования Перечислите способы получить количество записей в таблице? Для подсчета количества записей в таблице вы можете использовать следующие команды с картинки.

28 Oct 2026, 20:29 UTC965 viewsread 8 November 2026
Photo

UNLOGGED-таблица Промежуточные таблицы, которые не нужно восстанавливать в случае сбоя и которые не нужны в репликах, можно задать как UNLOGGED.

27 Oct 2026, 20:29 UTC≈1,060 viewsread 8 November 2026

Как хранить сеть дорог в БД для построения маршрута? Итак, формулировка задачи следующая: есть база данных, в ней хранится информация о дорогах, включая координаты, нужно реализовать построение маршрутов из начальной точки к конечной. Смотреть статью

Showing the 12 most recent of 58 posts we hold for @seniorsql. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.

Posts recorded as deleted after publishing

We recorded 1 post on @seniorsql as deleted — posts this register held that were missing from the channel’s public page on two separate reads, taken from different network addresses at least an hour apart.

A deletion is not wrongdoing. This register can see that a post it held is no longer on the channel’s public page, and when — not why. Expired ad placements, reposts, rotating links and corrections all look the same. This is a count of recorded detections, not an exact total: it misses deletions we could not see, because only a post we held and later re-read inside the page can be seen to go, and it may include a small number of wrong records. How this is measured.

First seen missing
26 August 2026
Most recent seen missing
26 August 2026
Median time before seen missing
3 days
Seen missing in the last 30 days
0

Mentions

Named by 1 registered channel — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.

Named by

Channels on the register whose posts name this channel's handle.

A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.

Appears in Telegram’s recommendations for other channels

The reverse of the list above, and a different kind of signal. This does not require this channel to have ever been asked about directly — each row below is a channel we DID ask Telegram about, whose Telegram-generated list happened to include this one. A channel can appear here with an empty list above it, because being named by someone else’s query is independent of having been queried itself.

Базы данных | Access, SQL, Big Data
@databases_secrets · 30,021
Telegram ranks this channel #24 of 82 here — alongside 81 others — read 7 September 2026
Senior Java Developer
@seniorjavist · 20,386
Telegram ranks this channel #51 of 89 here — alongside 88 others — read 26 September 2026
Senior Python Developer
@seniorpy · 39,177
Telegram ranks this channel #58 of 92 here — alongside 91 others — read 30 August 2026
IT сфера * Компьютеры * Технологии
@it_kanal_tg · 26,623
Telegram ranks this channel #71 of 79 here — alongside 78 others — read 13 September 2026
Python Learning
@Python_per_month · 27,883
Telegram ranks this channel #71 of 86 here — alongside 85 others — read 9 September 2026
Senior Frontend Developer | JavaScript, React, HTML & CSS
@senior_front · 18,909
Telegram ranks this channel #90 of 90 here — alongside 89 others — read 2 October 2026

This channel appears in 6 seed channels' Telegram-generated recommendation lists in total. Each is Telegram’s list for THAT channel, not this one — see how this is measured.

Cite this entry

A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 8 November 2026 — this entry's latest reading, not the date you are reading this.

“Senior SQL Developer” (@seniorsql), 14,158 subscribers as measured 8 November 2026. Telegram Register, tgregister.com/channel/seniorsql.

Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.