add sql refresher #713
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add sql refresher #713
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* Fixed a typo in awesome-data-engineering.md (#550) * Update README.md * Fixed scala version as per issue #431 (#552) * Update learning-in-public.md * Update README.md with Kemal's notes (#553) * Update README.md * new cohort & sponsors * remove leaderboard * Update pyspark.md (#559) update link that works * Update README.md * feat: add kestra module (#567) * feat: add kestra module * fix: image * Update README.md * fix bad commit * Update README.md * Update README.md * Update README.md * Update README.md * make img more compact * fix homework * Update README.md * fix: null unique_row_id * fix: dbt flow id * fix: purge and dbt * Update README.md * Fix taxi zone lookup CSV file name (#563) * fix: avoid hardcoding schema info in dbt (#566) * fix: avoid hardcoding schema info in dbt * Update schema.yml * update module 1 readme.md with Manuel Notes (#569) * Update README with Kestra notes (#572) * Spell fixed after-sign-up.md (#571) * Update README.md * Update dlt.md * Update README.md * feat: add Kestra videos and updated flows (#573) * fix: kestra readme * fix: flow changes to match videos * fix: video placement * fix: first video * fix: video order * Update README.md * fix: 2.2.9 link (#576) fix: update homework tasks fix q2 * hw1 2025 * fix: separate db to kestra (#578) * fix: separate db to kestra * fix: add resources for postgres * Update README of Weeks 01 and 02 with Horeb's Notes (#579) * Update learning-in-public.md (closes #577) * Update README.md * I changed the homework link because it was not working (#581) * Fix grammar in asking-questions.md (#582) * update: cohort 2025 - week1 homework (#580) * Add docker-compose question * Replaces Q1 with the previous Q2 question * Adds docker network/docker-compose question as the new Q2 * Update Question 3 to be count trips segmentation * Update Q7 about Terraform * Update all answers to use checkboxes * Update Q3 to use numbers instead of bullets for the events * Typo fix * Update homework.md * Update homework.md (#585) Co-authored-by: Alexey Grigorev <alexeygrigorev@users.noreply.github.com> * Update links to Horeb's notes (#584) * add Manuel Guerra Notes (#586) * Update docker-compose.yml (#583) Other people and I had some issue if if the tag was set to "develop" instead of "latest". Sources: - https://app.slack.com/client/T01ATQK62F8/search - comment from Kestra at the comment from @gregwilson007 * fix: update kestra homework under cohorts (#588) * fix: kestra homework * fix: add in previous content * Update README.md * Fix spelling error: "formad" -> "format" (#590) * Fix typo on Question 7 Homework 1 (#596) The correct command flag is -auto-approve whith 2 "p"s * Fix typo in homework.md (01-docker-terraform) (#594) * rm duplicate link (#589) * fix: homework for module 2 (#597) * Update homework.md * Update homework.md * Delete 02-workflow-orchestration/homework.md * Update README.md * Update README.md * Update homework.md * Update homework.md (#600) Fix typo * Update README.md (#599) Hello Alexey, This is the note indicating Week One Postgres docker setup be updated to version 15 or later to avoid merge syntax errors during the Kestra exercises * fix: new FAQ notes (#601) * Contribution: adding SQL refresher code missing from README (#605) * Contribution: adding SQL refresher code missing from README * Update README.md --------- Co-authored-by: Alexey Grigorev <alexeygrigorev@users.noreply.github.com> * Update datasets.md (#604) * fix: update README.md of 01-docker-terraform (#602) the link to homework was set to 2024 cohort * Update README.md * fix: dbt note for week 4 (#610) * fix: add Kestra FAQ #2 video (#611) * fix links Previous Cohorts (#612) * fix links Previous Cohorts * fix links previous cohorts * fix: homework clarification (#617) * Add my notes of Week 03 (#616) * Update links to Horeb's notes * Add notes of Week 03 from Horeb SEIDOU * Update README.md (#618) * Update README.md Added dbt fundamentals course for participants who are new to dbt * Update README.md * Update README.md --------- Co-authored-by: Alexey Grigorev <alexeygrigorev@users.noreply.github.com> * Revert "Add my notes of Week 03 (#616)" (#619) This reverts commit 9d2a2de. * fix: homework 3,4,5 clarification (#620) * Update README.md (#626) * Update module 4 Community notes (#625) * Added module-01 README.md notes line (#622) * fix: combined docker compose file (#628) * fix: Kestra FAQ video 3 (#630) * Correct the adding of my notes in Week 03 (#631) * Update links to Horeb's notes * Add notes of Week 03 from Horeb SEIDOU * Update README.md (#632) * hw1 solution * added my notes. Update README.md (#642) Add lqoshe's Student Ntes for module2-workflow-orchestration * Link to gcp taxi scheduled not working (#636) Fixes link module2's homework to scheduled flow (`06_gcp_taxi_scheduled.yaml`) * Update README.md add week 2 notes (#634) Add Tinker0425's student notes to module2-workflow-orchestration * Update README.md (#647) * fix: remove Google SA task * fix: instructions for kv store * Module 1 Homework Solution: Typo fixes on explanations.md (#644) * Q2 - typo fix on port forwarding (to 5433, from 5432) * Q6 - typo fix on dropoff_zone (to JFK Airport, from JFK Airflow) * Q7 - fix on "Generating proposed changes and auto-executing the plan" (to `terraform apply -auto-approve`, from `terraform plan -auto-apply`) * All answers remain the same as defined in each *Answer* block * Updated Week 3 Homework for 2025 (#639) * fix homework year text to avoid confusion (#649) * Fix/hw3 typos (#654) * fix typos on Module-3 howework assignment * add dlt workshop (#652) * fix(hw1-solution): use `ncat` to solve Q2 (#653) * fix(hw1-solution): use `ncat` to solve Q2 * Update homework.md * fix: network mode for dbt * Update 2025 Homework 3 (#657) Civilized dates, fixed number reference * Update README.md (#656) Add fonsecagabriella's module3-data-warehousing notes * Update refs to dbt Fundamentals course from dbt Labs Update refs to dbt Fundamentals course from dbt Labs * Add fonsecagabriela's student nodes to Module 1 (#658) Add fonsecagabriela's student nodes to Module 1 * Add MercyMarkus' student notes (#660) * Add MercyMarkus' notes to module1-containerization * Add MercyMarkus' notes to module2-workflow-orchestration * dlt: add homework (#661) * add homework, workshop content improvement * move dlt files to dlt folder * dlt homework * link * link * added submission link and options * FIX: Typos - Modules 1 ~ 4 (#664) * Add Tinker0425 Notes to Module-3 README.md (#663) * feat: week 2 solutions * fix: q1 clarification * Update homework.md * Added link to latest Spark Big query connector jar file (#665) * Update README.md * Update dlt_homework.md * feat: combined docker compose for module 2 * fix: docker folder for module 2 * fix: links for postgres docker * Update homework.md (#673) Added Link to Solution Walkthrough * SQL Typos README.md (#672) - Fixed small typos in the text and the comments (code) - Updated aliasing as in the video: from `dropff_loc` to `dropoff_loc` - Removed unnecessary aliasing for the `yellow_taxi_trips` table in some requests * Add homework4/analytics engineering (#675) * Add 4x dbt-specific questions regarding: * dbt model resolution * dbt variables and dynamic models * dbt data lineage and execution * dbt Macros and Jina * Add 3x SQL challenges for Analytics Engineering * Add homework_q2.png as ilustration for Q3 * Revert "Add homework4/analytics engineering (#675)" (#676) This reverts commit 292e9ac. * * Add 4x dbt-specific questions regarding: (#677) * dbt model resolution * dbt variables and dynamic models * dbt data lineage and execution * dbt Macros and Jina * Add 3x SQL challenges for Analytics Engineering * Add homework_q2.png as ilustration for Q3 * Update README.md (#678) added workshop video link with thumbnail * Update README.md * Update homework.md * Update instructions for Q7 * add notes for dlt workshop (#686) Co-authored-by: peatwan <peatwan09@gmail.com> * Added notebook with DLT upload (#681) Created a notebook with DLT to upload data to GCS and BigQuery * fxing minor typos (#687) Co-authored-by: Alexey Grigorev <alexeygrigorev@users.noreply.github.com> * Add my Week4 notes (#685) * Update links to Horeb's notes * Add notes of Week 03 from Horeb SEIDOU * Update README.md Add my notes of Week 04 * Update README.md (#632) * hw1 solution * added my notes. Update README.md (#642) Add lqoshe's Student Ntes for module2-workflow-orchestration * Link to gcp taxi scheduled not working (#636) Fixes link module2's homework to scheduled flow (`06_gcp_taxi_scheduled.yaml`) * Update README.md add week 2 notes (#634) Add Tinker0425's student notes to module2-workflow-orchestration * Update README.md (#647) * fix: remove Google SA task * fix: instructions for kv store * Module 1 Homework Solution: Typo fixes on explanations.md (#644) * Q2 - typo fix on port forwarding (to 5433, from 5432) * Q6 - typo fix on dropoff_zone (to JFK Airport, from JFK Airflow) * Q7 - fix on "Generating proposed changes and auto-executing the plan" (to `terraform apply -auto-approve`, from `terraform plan -auto-apply`) * All answers remain the same as defined in each *Answer* block * Updated Week 3 Homework for 2025 (#639) * fix homework year text to avoid confusion (#649) * Fix/hw3 typos (#654) * fix typos on Module-3 howework assignment * add dlt workshop (#652) * fix(hw1-solution): use `ncat` to solve Q2 (#653) * fix(hw1-solution): use `ncat` to solve Q2 * Update homework.md * fix: network mode for dbt * Update 2025 Homework 3 (#657) Civilized dates, fixed number reference * Update README.md (#656) Add fonsecagabriella's module3-data-warehousing notes * Update refs to dbt Fundamentals course from dbt Labs Update refs to dbt Fundamentals course from dbt Labs * Add fonsecagabriela's student nodes to Module 1 (#658) Add fonsecagabriela's student nodes to Module 1 * Add MercyMarkus' student notes (#660) * Add MercyMarkus' notes to module1-containerization * Add MercyMarkus' notes to module2-workflow-orchestration * dlt: add homework (#661) * add homework, workshop content improvement * move dlt files to dlt folder * dlt homework * link * link * added submission link and options * FIX: Typos - Modules 1 ~ 4 (#664) * Add Tinker0425 Notes to Module-3 README.md (#663) * feat: week 2 solutions * fix: q1 clarification * Update homework.md * Added link to latest Spark Big query connector jar file (#665) * Update README.md * Update dlt_homework.md * feat: combined docker compose for module 2 * fix: docker folder for module 2 * fix: links for postgres docker * Add my Week4 notes --------- Co-authored-by: Alexander Blume <alexg9010@users.noreply.github.com> Co-authored-by: Alexey Grigorev <alexey.s.grigoriev@gmail.com> Co-authored-by: lqoshe <105874324+lqoshe@users.noreply.github.com> Co-authored-by: Till Meineke <Till.Meineke@googlemail.com> Co-authored-by: Tinker0425 <79473752+Tinker0425@users.noreply.github.com> Co-authored-by: Valeriia Kuka <71337024+kavaivaleri@users.noreply.github.com> Co-authored-by: Will Russell <wrussell@kestra.io> Co-authored-by: Bruno Oliveira <bruno.ariev@gmail.com> Co-authored-by: Michael Shoemaker <mikeshoemaker2000@yahoo.com> Co-authored-by: Alejandro Pajaron <apjorquera@gmail.com> Co-authored-by: Álvaro Kothe <kothe65@gmail.com> Co-authored-by: Alena Astrakhantseva <alena@dlthub.com> Co-authored-by: Alexey Grigorev <alexeygrigorev@users.noreply.github.com> Co-authored-by: Gabi Fonseca <fonseca.gabriella@gmail.com> Co-authored-by: Mercy Markus <mercymarkus1796@gmail.com> Co-authored-by: Pedro <39490719+plpcout@users.noreply.github.com> Co-authored-by: Krishnakumar RM <krishnakumar.rmenon@gmail.com> Co-authored-by: Will Russell <will@wrussell.co.uk> * Add my_script.py for workshops (#683) * Adding extra homework DLT Sara Sabater (#682) * Update README.md (#679) * Update Module 4 HW answers for Q7 * Update instructions for trip_duration * Update all answers * Add ManuelGuerra's notes on Module 5: Batch Processing * Add mossdet notes on Module 3: Data Warehousing * Updated slide link for 2025 (#691) * Update homework instructions * Update link on Step 2 of the Prerequisites for Q7 * Add Step 6 on 'Before you start section' * Fix typo on Question 5 * fix(hw4): Fix HW4 Question description * updated PYTHONPATH with py4j * homework 5 * Add notes for week 4 (#696) * add notes from DLP to Week 3 * add PDF for week 3 notes instead of odp * add notes for Week 4 Analytics Engineering * update introduction video (#692) * dlt-parquet-without-download (#688) * dlt-parquet-without-download * dlt-parquet-without-download * dlt-parquet-without-download * dlt-parquet-2-methods * made it more clear * fix: add a working version * fix: match video version * Update README.md (#693) * Update link on Step 2 of the Prerequisites for Q7 * Update README.md * Update README.md Removed the approach that suggested using marketplace data per Victoria's comment. --------- Co-authored-by: iobruno <bruno.ariev@gmail.com> * Added note about YoY values (#704) This was confusing among learners. Some of us thought the values were reproducible. * Update README.md (#705) added notes * Fix instructions for homework module 4 (2025) (#708) * Update README.md Add link to 2025 homework * Update homework.md Change `Credit Card` into `Credit card` * FIX: Typos - Module 5 (#711) * update 2025 batch homework (#710) * Update project.md (#706) * Update project.md Link was broken * Update project.md * Fix homework year text (#697) * fix homework year text to avoid confusion * set correct homework year and fix path to homework * Fix: Create bucket if it does not exist. (#668) * Create bucket if it does not exist since we get an exception otherwise when uploading ("The specified bucket does not exist") * Modifications for more robust create_bucket method * pyflink * adding pyflink (#715) * spark macos homebrew setup update (#714) * fixing env file (#717) * make it possible to run the code * adjusted homework 6 * adjust TDS urls (#721) fixes #720 * add notes to batch processing module (#719) * add notes from DLP to Week 3 * add PDF for week 3 notes instead of odp * add notes for Week 4 Analytics Engineering * add notes to batch processing module * remove line break * add notes from DLP to Week 3 * add PDF for week 3 notes instead of odp * add notes to batch processing module * remove line break * fix: update cloud instructions to run spark job (#718) * Update project.md * Update README.md * Update README.md * homework 5 and 6 * Update link to eurostat database (#722) * add sql refresher (#713) * Update certificates.md * fix db connection * fix: typo * chore: fix typos (#728) Here are the typos found in the `SQL_refresher.md`: 1. **"Window Funtions"** - Should be **"Window Functions"** (multiple instances in the table of contents and headings). 2. **"Lets calculate"** - Should be **"Let's calculate"** (missing apostrophe in "Let's"). * edited question and provided answers (#734) * Create solutions.md solutions for 2024 cohort (week1) * Update homework.md edited question no.5 * docs: fix typos and improve text clarity (#727) - Fix typos in asking-questions.md - Fix typos in awesome-data-engineering.md - Fix typos in dataset.md - Fix typos in learning-in-public.md * fix: 02-workflow-orchestration/README.md (#725) * Update README.md * Update FAQ links to new DataTalks.Club FAQ page (#740) * Initial plan * Update FAQ links to point to new DataTalks.Club FAQ page Co-authored-by: alexeygrigorev <875246+alexeygrigorev@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: alexeygrigorev <875246+alexeygrigorev@users.noreply.github.com> * added Data engineer handbook in resource aggregators (#744) Co-authored-by: samhita sarkar <samhitasarkar@192.168.1.246> * Remove all Google Calendar references from documentation (#743) * Initial plan * Remove all Google Calendar references from documentation Co-authored-by: alexeygrigorev <875246+alexeygrigorev@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: alexeygrigorev <875246+alexeygrigorev@users.noreply.github.com> * typo fix: parquet file format (#742) * typo fix: parquet file format * further typo fix * Enhance README with pgcli installation guidance (#746) Added instructions for resolving pgcli installation issues on Ubuntu, including setting up a virtual environment and installing necessary libraries. * Add testimonials section to README Added a testimonials section with a quote from Tim Claytor: https://www.linkedin.com/feed/update/urn:li:activity:7396882073308938240?commentUrn=urn%3Ali%3Acomment%3A%28activity%3A7396882073308938240%2C7396889959711793152%29&dashCommentUrn=urn%3Ali%3Afsd_comment%3A%287396889959711793152%2Curn%3Ali%3Aactivity%3A7396882073308938240%29 * Update testimonial from Tim Claytor * Add testimonials to README.md * Update start date for 2026 cohort * Add the new content for the AE module, including new instructors, and also new tools * It is Looker Studio, not Looker Data Studio. Lapsus there * Re-organize setup. Now we have 2 markdown files. One for the local_setup and one for the cloud_setup * Organize the SQL refresher into its own dir. I might add other refreshers here. * Reorganize sql refresher into its own directory * Modify the setup part * Remove all gitkeeps * Remove deprecation errors from dbt * Add a more complete gitignore * Remove the python option for simplicity * Add cloud_setup guide * Modify the local_setup * Add funding information for GitHub * Update course content to reflect 2026 cohort changes (#751) * Add the new content for the AE module, including new instructors, and also new tools * It is Looker Studio, not Looker Data Studio. Lapsus there * feat: module 2 for 2026 cohort (#749) * feat: pin docker image versions, add 2025 cohort * feat: cut dbt, add AI Workflows & AI Agents section * fix: simplify docker set up * fix: pg db config * fix: amend pg db name * feat: reduce the scope * fix: update structure for 2026 * simplify docker compose set up * fix: postgres volume * fix: install instructions * make module 1 pg work with module 2 * make sure docker compose matches readme * add more introductory stages * flesh out readme * 2.2 details * fix: headers * 2.1 complete * fix heading * feat: 2.2.1 video * Add 2.2.2 to 2.3.1 * fix: placeholders for videos --------- Co-authored-by: Will Russell <will@wrussell.co.uk> Co-authored-by: Will Russell <wrussell@kestra.io> * Add improvements to the dbt project * Add 0 to the macro for payment type * New version of dbt project * New setup guides * Remove references from previous years (mostly old stack) * feat: 2.1.1 video for 2026 Updated the README to include a video link for 'What is Workflow Orchestration?' * feat: 2.1.2 video * Refactor mart models to use dbt naming conventions - Rename fact_trips → fct_trips (standard dbt fact table prefix) - Rename dm_monthly_zone_revenue → fct_monthly_zone_revenue - Update schema.yml to reflect new model names - Add unique combination test for fct_monthly_zone_revenue * Restructure staging layer with raw subdirectory - Move staging models into raw/ subdirectory for better organization - Remove old staging files from root staging directory - Maintains separation between raw data sources and transformations * Fix column reference in dim_zones model - Update locationid → location_id alias to match seed column name - Ensures consistent column naming across dimension table * Add not_null test for trip_id in int_trips_unioned - Ensures data quality at intermediate layer - Validates trip_id is generated correctly before downstream models * Remove dbt_project_evaluator package dependency - Remove unused dbt_project_evaluator package - Keep dbt_utils and codegen for essential utilities - Update package-lock.yml accordingly * Configure DuckDB temp directory for out-of-core processing - Add .duckdb_temp/ to gitignore - Supports disk spilling for memory-constrained environments - Enables processing larger-than-memory datasets * Rename to taxi_rides_ny, instead of generic sounding dbt_project * New config for the profiles.yml. More conservative * Remove the failing tests * Update the packages * Revise README for Docker and Postgres workshop Updated the README to include workshop details and video links. * Remove optional Docker and GCP sections from README Removed optional sections on Docker networking and GCP Cloud VM setup from the README. * reorganizing * Audited and updated all outdated references to the setup guide * Make sure people don't commit the data * Leave an empty directory for people to save their parquet files * Remove target.database from the sources.yml * fix: flow names * fix: flow * feat: most of 2026 module 2 videos * module 2 videos * fix: flow names * fix: flow * feat: most of 2026 module 2 videos * module 2 videos * Remove merge conflicts * Add info about envs and how to download JSON keys from GCP * Update version of a package * Remove references from previous years * Add links to the new setup videos * Add an extra header for clarity, minor change * Add data/ to the gitignore and install dbt Power User * Remove unnecessary text * No need to keep the data dir. A python scripts creates it * Major changes: - Migrate from CSV/gzip to Parquet format for better performance - Restructure staging models: move from raw/ subdirectory to staging/ - Consolidate intermediate models by removing separate cleaned layers - Add incremental materialization to fct_trips for scalability - Implement cross-database trip duration calculation macro - Add vendor dimension table and payment type lookup seed - Create reporting models for business metrics - Add data quality analyses and comprehensive tests - Update documentation to reflect new architecture * Clarify why dbt Power User is a better choice here * Remove unused variables * Remove group by all for a more explicit solution * Remove data/ directory from version control The data files should not be tracked in Git as they can be regenerated by the ingest.py script and are already listed in .gitignore. * Remove ingest.py from version control This script is specific to local data ingestion and should not be tracked. * Clean up the setup guide and modify the python script * Remove unnecessary comments from the analysis files * Add data formats to the gitignore * Add placeholders for missing videos * Remove one extra | --------- Co-authored-by: Ohachor Victor <ovecjoe123@gmail.com> Co-authored-by: Alexey Grigorev <alexeygrigorev@users.noreply.github.com> Co-authored-by: Harsh Daiya <daiyaharsh90@gmail.com> Co-authored-by: Kemal Dahha <66003118+kemaldahha@users.noreply.github.com> Co-authored-by: Alexey Grigorev <alexey.s.grigoriev@gmail.com> Co-authored-by: Nguyễn Minh Nhật <123147485+NguyenNhat4@users.noreply.github.com> Co-authored-by: Anna Geller <anna.m.geller@gmail.com> Co-authored-by: Eric Son <ym.eric.son@gmail.com> Co-authored-by: Manuel Guerra <161093797+ManuelGuerra1987@users.noreply.github.com> Co-authored-by: giacomo-b <38355805+giacomo-b@users.noreply.github.com> Co-authored-by: Will Russell <will@wrussell.co.uk> Co-authored-by: Will Russell <wrussell@kestra.io> Co-authored-by: Horeb SEIDOU <87755176+Horeb136@users.noreply.github.com> Co-authored-by: Marco Ferrari <33093184+mferrari0@users.noreply.github.com> Co-authored-by: NgoniMujuru <37013890+NgoniMujuru@users.noreply.github.com> Co-authored-by: Bruno Oliveira <bruno.ariev@gmail.com> Co-authored-by: jeosol <jeronwunalu@gmail.com> Co-authored-by: Vinicius Pasqualini Carvalho <pasqualini9@gmail.com> Co-authored-by: igorgorp <31143627+igorgorp@users.noreply.github.com> Co-authored-by: Ari Lamstein <arilamstein@gmail.com> Co-authored-by: Oluwanifesimi Frank Ademoye <52410282+nifesimii@users.noreply.github.com> Co-authored-by: BBensassi <130059633+BadrBensassi@users.noreply.github.com> Co-authored-by: Naman <49680172+NAMAN108282@users.noreply.github.com> Co-authored-by: Dongyeong Chon <dngyng1000@gmail.com> Co-authored-by: AbdelaliEch <abdou.alaali10@gmail.com> Co-authored-by: Valeriia Kuka <71337024+kavaivaleri@users.noreply.github.com> Co-authored-by: Tinker0425 <79473752+Tinker0425@users.noreply.github.com> Co-authored-by: Alexander Blume <alexg9010@users.noreply.github.com> Co-authored-by: lqoshe <105874324+lqoshe@users.noreply.github.com> Co-authored-by: Till Meineke <Till.Meineke@googlemail.com> Co-authored-by: Michael Shoemaker <mikeshoemaker2000@yahoo.com> Co-authored-by: Alejandro Pajaron <apjorquera@gmail.com> Co-authored-by: Álvaro Kothe <kothe65@gmail.com> Co-authored-by: Alena Astrakhantseva <alena@dlthub.com> Co-authored-by: Gabi Fonseca <fonseca.gabriella@gmail.com> Co-authored-by: Mercy Markus <mercymarkus1796@gmail.com> Co-authored-by: Pedro <39490719+plpcout@users.noreply.github.com> Co-authored-by: Krishnakumar RM <krishnakumar.rmenon@gmail.com> Co-authored-by: Maximilien Eyengue <74904516+maxim-eyengue@users.noreply.github.com> Co-authored-by: peatwan <23513112+peatwan@users.noreply.github.com> Co-authored-by: peatwan <peatwan09@gmail.com> Co-authored-by: PK109 <89292251+PK109@users.noreply.github.com> Co-authored-by: Guanyi Lu <145878350+Guanyi-Lu@users.noreply.github.com> Co-authored-by: saraisab <162863185+saraisab@users.noreply.github.com> Co-authored-by: Michael Kuy <94992068+mkuy-hillspire@users.noreply.github.com> Co-authored-by: Daniel Lachner-Piza <mossdet.detector@gmail.com> Co-authored-by: Stéphane <reis.stephane@protonmail.com> Co-authored-by: Jugnu <jugnu.arora@gmail.com> Co-authored-by: Hanieh Moshki <hanieh.moshki@gmail.com> Co-authored-by: QuentinElGuay <33553005+QuentinElGuay@users.noreply.github.com> Co-authored-by: maberrospi <82261578+maberrospi@users.noreply.github.com> Co-authored-by: Zach Wilson <zachwilson130@gmail.com> Co-authored-by: Nikolai Neustroev <38642966+nikolai-neustroev@users.noreply.github.com> Co-authored-by: Harry Tran <huytran.quang080199@gmail.com> Co-authored-by: Hafeez Pizofreude <108355948+pizofreude@users.noreply.github.com> Co-authored-by: chaiandmushrooms <ajaymkatteo.0@gmail.com> Co-authored-by: Park Jiwon <57484954+david-parkk@users.noreply.github.com> Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com> Co-authored-by: alexeygrigorev <875246+alexeygrigorev@users.noreply.github.com> Co-authored-by: samhsark <66312882+samhsark@users.noreply.github.com> Co-authored-by: samhita sarkar <samhitasarkar@192.168.1.246> Co-authored-by: gshumkov <30426061+gshumkov@users.noreply.github.com> Co-authored-by: Rahid Zeynalov <44039543+rahidzeynal@users.noreply.github.com>
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As discussed in slack, I made some notes on CTEs and window functions to help students with homework