--- title: "SQL and Data Analysis Course in Peru: Live Online, in English" description: "SQL and data analysis course for Peru, live online in English: queries, joins and checks on real Peruvian open data, for analysts and students, at any hour." canonical: https://learn.modernagecoders.com/sql-and-data-analysis-course-peru source: src/pages/sql-and-data-analysis-course-peru.html --- > SQL and data analysis course for Peru, live online in English: queries, joins and checks on real Peruvian open data, for analysts and students, at any hour. The short answer At Modern Age Coders, SQL and data analysis for learners in Peru is taught live, online and in English. Adults and university students go from a first SELECT to joins, grouping, window functions and checks on data quality, then add spreadsheets, Python and dashboards; teenagers from 13 have their own SQL course. We practise on real open data, including Peruvian municipal registers, and teach people to question a total before reporting it. A mentor leads every class on video, in a class of fifteen to twenty or one to one, at the day and hour you choose. Start here ## Three SQL and data analysis courses One for analysts, one for people who build databases, and one for teenagers. Each starts from zero. [![Data Analysis Course course thumbnail](/images/data-analysis-college.webp) PE / SQL / 01 Data analysis: Excel, SQL, Python and BI The analyst's route, over 8 to 10 months for anyone 18 or older starting from nothing: spreadsheets, SQL, Python and dashboards, always on real data. Open the syllabus →](/courses/data-analysis-mastery-course-college)[![MySQL Course course thumbnail](/images/database-college.webp) PE / SQL / 02 MySQL: SQL and database design For beginners from 18, 7 to 8 months. Queries, then design and administration: the course for people who will build and run databases. Open the syllabus →](/courses/mysql-database-complete-masterclass-college)[![MySQL for Teens course thumbnail](/images/mysql-teens.webp) PE / SQL / 03 MySQL for teens Ages 13 to 18, 5 to 6 months, from a first query to the data behind real apps. Open the syllabus →](/courses/mysql-mastery-for-teens) Why SQL ## Why learn SQL if you already use Excel? Because a spreadsheet shows you the data and SQL asks it questions. Once a table is too large to scroll, shared by several people or stored in a company system, SQL is how you reach it. ### Questions you can repeat A query is a written question. Run it again next month on new data and you get the new answer, with no hand-copied formulas to drift out of step. ### Data where it lives Sales systems, school registers, hospital stock, municipal records: most are databases. SQL reads them directly instead of waiting for someone to export a file. ### Checks you can show A query that finds duplicates or contradictions is evidence another analyst can rerun. That is the heart of the lesson further down this page. ### What the course teaches SELECT, WHERE and ORDER BY; aggregates with GROUP BY and HAVING; joins between tables; subqueries and common table expressions; window functions for running totals and rankings; and the design of tables, keys and indexes. Alongside the syntax, a set of habits: count rows before and after every join, check that keys are unique, compare two columns that should agree, and never report a total that has not been checked another way. ### Where Python and dashboards come in Our analysis course pairs SQL with Python for cleaning and charts, and with a business intelligence tool for dashboards. The lesson below runs SQL from Python on purpose: it is how many analysts work, and it needs nothing but Python, which already includes SQLite. Developers take the MySQL course instead, which goes deeper into database design, transactions and administration. Peruvian open data ## What does Chiclayo publish about its rubbish collection? The Municipalidad Provincial de Chiclayo publishes the tonnes of solid waste collected in the district of Chiclayo, shift by shift and day by day, on Peru's Plataforma Nacional de Datos Abiertos. It is a small, honest-looking table, and an ideal first SQL dataset. | Item | Description on datosabiertos.gob.pe | | --- | --- | | Publisher | Municipalidad Provincial de Chiclayo, through its Sub-Gerencia de Residuos Sólidos | | Content | Weight of solid waste collected, in tonnes, by collection shift and day | | Period | 2023 to April 2026 | | Person who recorded the weight | Anonymised | | Update frequency | Monthly | | Released and modified | Released 8 March 2026; last modified 9 May 2026 | | Licence | ODC-By, the Open Data Commons Attribution License | Taken from the "Registro de recolección de residuos sólidos en el distrito de Chiclayo" page of the Municipalidad Provincial de Chiclayo on datosabiertos.gob.pe; page and file retrieved 9 November 2026. In the file we downloaded: 3,648 rows, three shifts, dates from 1 January 2023 to 30 April 2026; these counts are ours. ### Chiclayo in figures Chiclayo city counted 552,508 people at the 2017 census, which made it one of the largest cities in Peru; INEI has not yet published city figures from the 2025 census. The department of Lambayeque, of which Chiclayo is the capital, counted 1,404,633 people in the 2025 census. The dataset covers only the district of Chiclayo, not the whole city or province, which is the kind of detail an analyst writes down before comparing it with anything else. ### First look, before any SQL The file is in Latin-1, not UTF-8, so opening it the default way fails on the first accented letter. One column header, "PROVINCIA ", ends with a space. The weekday column spells Wednesday both MIERCOLES and MIÉRCOLES, and some unit values carry a trailing space. None of that is unusual. It is simply what real registers look like, and every one of those details would break a careless query. Learners write them into a short data note before going further. An SQL lesson ## Why did Chiclayo seem to collect twice as much rubbish in October 2024? It did not. But the first query any analyst would write says it did, and says nothing at all about November. Here is how SQL finds out why, in four short queries. ***Load the file into SQLite (Python standard library only)**Python* ``` import csv, sqlite3 FILE = "residuos_chiclayo_abril2026.csv" db = sqlite3.connect(":memory:") db.execute("CREATE TABLE r (fecha TEXT, mes TEXT, dia TEXT, turno TEXT, peso REAL)") with open(FILE, encoding="latin-1") as f: for row in csv.DictReader(f): db.execute("INSERT INTO r VALUES (?, ?, ?, ?, ?)", (row["FECHA_REGISTRO"], row["MES"], row["DIA"].strip(), row["TURNO"], float(row["PESO"]))) def show(sql): for row in db.execute(sql): print(*row, sep=" | ") print() ``` This keeps five columns: the date of the record, the month column, the weekday name, the shift and the weight in tonnes. `show()` prints each result row with `|` between the values. ### The obvious first question A manager asks for tonnes collected per month at the end of 2024. The natural query takes the month from the date, groups by it and adds up the weight. Before reading the result, the mentor asks what each month should look like: about 90 or 93 shifts, three a day, and a total in the same range as its neighbours. ### What comes back September has 90 shifts and December 93, as expected. October has 183 shifts and almost double the tonnes. November is not there at all. Many reports would print this table. A good analyst sees two alarms: a month with twice the expected rows, and a month with none. ***Query 1: monthly totals by the month in the date**Python* ``` show(""" SELECT substr(fecha, 1, 6) AS month, COUNT(*) AS shifts, ROUND(SUM(peso), 1) AS tonnes FROM r WHERE fecha BETWEEN '20240901' AND '20241231' GROUP BY month """) ``` It prints `202409 | 90 | 6368.6`, `202410 | 183 | 13921.5` and `202412 | 93 | 6924.9`. November 2024 is missing. Every day should have exactly three rows, one per shift, so the date is a key that ought to be unique per shift. `GROUP BY` with `HAVING` finds the days that break the rule. Then two columns that must agree are compared: the file's own month column against the month inside the date, and the weekday name against the weekday SQLite computes from the date. ***Queries 2 to 5: find the clash, explain it, fix the total**Python* ``` show(""" SELECT fecha, COUNT(*) AS rows_that_day FROM r GROUP BY fecha HAVING COUNT(*) <> 3 ORDER BY rows_that_day DESC LIMIT 3 """) show(""" SELECT mes, substr(fecha, 1, 6) AS month_in_date, COUNT(*) FROM r WHERE mes <> substr(fecha, 1, 6) GROUP BY mes, month_in_date """) show(""" SELECT fecha, dia, strftime('%w', substr(fecha,1,4) || '-' || substr(fecha,5,2) || '-' || substr(fecha,7,2)) AS weekday_of_date FROM r WHERE mes = '202411' LIMIT 1 """) show(""" SELECT mes, COUNT(*) AS shifts, ROUND(SUM(peso), 1) AS tonnes FROM r WHERE mes BETWEEN '202409' AND '202412' GROUP BY mes """) ``` It prints `20250630 | 90`, `20241030 | 6` and `20241029 | 6`; then `202411 | 202410 | 90`; then `20241001 | VIERNES | 2`; and finally `202409 | 90 | 6368.6`, `202410 | 93 | 7342.9`, `202411 | 90 | 6578.6` and `202412 | 93 | 6924.9`. | Month | Shifts, grouped by date | Tonnes, grouped by date | Tonnes, grouped by month column | | --- | --- | --- | --- | | September 2024 | 90 | 6,368.6 | 6,368.6 | | October 2024 | 183 | 13,921.5 | 7,342.9 | | November 2024 | 0 | none | 6,578.6 | | December 2024 | 93 | 6,924.9 | 6,924.9 | Credit: waste-collection register of the Municipalidad Provincial de Chiclayo, published on datosabiertos.gob.pe under ODC-By. We wrote and ran the queries, and computed the totals, on 9 November 2026 (Python 3, SQLite 3.50.4). The story is now clear. The 90 rows whose month column says November 2024 carry October dates, 1 to 30 October. The weekday settles which column to trust: the first of those rows is dated 1 October 2024 but its weekday says VIERNES, Friday, while SQLite's `strftime('%w')` returns 2, a Tuesday. 1 November 2024 was a Friday. So the month column and the weekday are right, and the date was typed with the wrong month. Grouped by the month column, every month has 90 or 93 shifts and a believable total. The first clash query found a second, stranger problem: 90 rows all dated 30 June 2025. Their weekday names run Sunday, Monday, Tuesday and so on in order, and 1 June 2025 was a Sunday, so the rows almost certainly cover the whole of June with one date pasted down the column. That one is left for the learner, below. Neither problem was visible in the dataset page, and neither needed anything more advanced than `GROUP BY`, `HAVING` and a comparison of two columns. 1. **Rebuild June 2025.** Assuming the rows are in date order, three per day, write a query or a short Python step that gives each one its real date. How would you check that your fix is right? 2. **Count the gaps.** Use a table of every calendar date from 1 January 2023 to 30 April 2026 and a LEFT JOIN to list the days with no rows. Which months are they in? 3. **Clean the weekday.** Make MIERCOLES and MIÉRCOLES the same value, then compare the average tonnes per shift on each weekday. 4. **Write the note.** In five sentences, tell the municipality what you found, with the query that proves each point. Choosing a course ## Which SQL course should I take? Pick by what you will do with SQL most days. The table is our own advice. | If you mostly want to | Take | Length | | --- | --- | --- | | Analyse data and build reports | Data analysis: Excel, SQL, Python and BI | 8 to 10 months | | Design and run databases for applications | MySQL: SQL and database design | 7 to 8 months | | Start from spreadsheets, without programming | Data and AI analytics for non-programmers | 4 months | | Go on to statistics and machine learning | Data science course, after SQL | 10 to 12 months | | Learn SQL as a teenager | MySQL for teens, ages 13 to 18 | 5 to 6 months | Course lengths are from our own syllabuses. Our advice, not a ranking; the mentor confirms the choice at the free class. ### Analysts in Peruvian organisations Many of our adult learners already prepare monthly reports by hand in spreadsheets. The analysis course moves the same work into SQL and Python so it runs again next month in seconds, with checks like the ones above built in. Our Spanish page for [adults learning to code in Peru](/cursos-de-programacion-para-adultos-peru) describes how classes fit around a job. ### Students and future data scientists University students in Peru meet SQL in database courses, often only as syntax. We add the analysis habits and the English vocabulary used in documentation and interviews. If statistics and models are the goal, SQL comes first and data science second. Our Spanish page, [data science en inglés](/curso-de-data-science-en-ingles-peru), explains that next step. Language of the classes ## Are the classes in Spanish? No. We teach only in English, live and online, with mentors based in India who adapt to each learner's level. ### SQL is already half English SELECT, FROM, WHERE, GROUP BY, HAVING, JOIN: the language itself is made of English words, and so are the error messages and the documentation of every database. Learners who know a little English find that SQL reinforces it. Mentors keep their sentences short, explain each new keyword in plain words and repeat when asked. You may answer however you can; the query on the screen is what matters. ### English across Peru Measured by EF's English Proficiency Index 2025, adults in Chiclayo average 474, which EF labels low; Lima averages 555, which it labels high. If your English is closer to the first figure, the free class will tell you honestly whether to start now or to take a gentler course first. Many learners find that working with SQL in English is the practice that moves them up. Class times ## At what time are classes, from Peru? At the time you choose. Peru keeps one time zone across the country and does not change its clocks. | Peru time | India time | Good for | | --- | --- | --- | | 06:45 | 17:15 | Before the office | | 12:00 | 22:30 | A lunch break | | 19:30 | 06:00, next day | After work | | 20:30 | 07:00, next day | Late learners | The whole of Peru uses zone America/Lima, five hours behind UTC and without daylight saving since 1994; India uses UTC plus 5:30. That leaves a constant gap of ten and a half hours. Chiclayo, Lima, Arequipa and Iquitos all share Peru time, so the slot you book works anywhere in the country. You choose in your own clock and the mentor sees the India time. Progress ## How do you know your SQL is good enough? Our milestones, each checked with a query you write and explain. | Step | What you can do | How it is shown | | --- | --- | --- | | 1. Select | Filter, sort and limit rows from one table | A query written from a spoken question | | 2. Aggregate | Group, count and sum, and filter groups with HAVING | The duplicate-day query from the lesson | | 3. Join | Combine tables without losing or doubling rows | Row counts before and after every join | | 4. Check | Prove a key is unique and two columns agree | A short data-quality report | | 5. Analyse | Use window functions and subqueries for real questions | Running totals and rankings, explained | | 6. Report | Turn queries into a dashboard or report others trust | A report with sources, licence and checks | ### For learners Milestone 4 is the lesson on this page. It is the one that makes colleagues trust your numbers. If a month has twice as many rows as its neighbours, the data is telling you something before the total is. ### For employers Each milestone leaves a query file and a short write-up the learner can show. Our certificate of completion is our own and is not a Peruvian university qualification. More courses ## Nine more courses around data For analysts adding skills, for developers, and for teenagers. All live, all in English. I ### Analysts 18 and over PE / AN / 01 #### Analytics without programming Four months of spreadsheets and Power BI dashboards. [Open the syllabus](/courses/data-and-ai-analytics-for-non-programmers-course) PE / AN / 02 #### Statistics and probability The maths behind every report, without code. [Open the syllabus](/courses/statistics-probability-maths-course) PE / AN / 03 #### Data science Python, machine learning and deep learning after SQL. [Open the syllabus](/courses/data-science-complete-masterclass-college)II ### Developers 18 and over PE / DEV / 01 #### Python masterclass Python from zero, the partner of SQL in analysis. [Open the syllabus](/courses/python-programming-masterclass-zero-to-advanced-college) PE / DEV / 02 #### Full stack development Applications that read and write a database. [Open the syllabus](/courses/full-stack-web-development-masterclass-college) PE / DEV / 03 #### Automation with Python Make the monthly report build itself, query to file. [Open the syllabus](/courses/python-ai-automation-masterclass-college)III ### Teenagers Ages 13 to 18 PE / TEEN / 01 #### Python for teens Programming from zero for secundaria students. [Open the syllabus](/courses/python-complete-masterclass-teens) PE / TEEN / 02 #### Teen data science For 14 to 18 year olds who know some Python. [Open the syllabus](/courses/data-science-course-for-teens-python-data) PE / TEEN / 03 #### Backend for teens Node, APIs and databases, from zero. [Open the syllabus](/courses/backend-coding-masterclass-for-teens) How it works ## How live SQL classes run Any day, any time, flexible: choose a batch, or for a very personalised plan choose 1-on-1 at the hour that suits your family. Daytime Peru mornings and lunchtimes fall in the Indian evening, an easy fit. After work A Peru evening is an Indian early morning, and mentors teach then too. 1-on-1 Your data, your questions, your hour. ### Write the query You type it; the mentor asks what it will return first. ### Real tables Open registers with real flaws, not perfect samples. ### One mentor Who knows your work and your weak spots. ### Clear English Short sentences, keywords explained, no rush. ### Check, then report Every total is checked a second way. ### Class size A group of fifteen to twenty, or a private class. Student work ## What our learners have built with data A sample is below; the [student labs](/student-labs) show more. ![NutriLife AI nutrition coach project screenshot](/images/projects/nutrilife.webp) AI and ML #### NutriLife An AI nutrition coach that reads what you eat and works you toward a target. by Bhavya · [Open it](https://nutrilife-bhavya.lovable.app) ![Misti AI chatbot for maths and coding screenshot](/images/projects/misti.webp) AI and ML #### Misti A chatbot that answers mathematics and programming questions, built and deployed by a student. by Harshit · [Open it](https://misti.modernagecoders.com) ![GuardianX AI internet safety assistant screenshot](/images/projects/guardianx.webp) AI and ML #### GuardianX An assistant that helps a young person recognise unsafe situations online. by Vivaan · [Open it](https://guardianx-cybersaver.lovable.app) ![SkyCast weather forecast application screenshot](/images/projects/skycast.webp) Web app #### SkyCast A weather forecasting site with live conditions for any location. by Krish Fees ## Fees for the SQL and data analysis course One month at a time. We charge in US dollars, card only; soles appear only once your bank has converted the charge at its own rate, so allow for a small difference on the statement. Free first class Free no card required - A free first class - A first query on a real table - No card asked Book it Group batch $100 USD a month, eight live classes - Fifteen to twenty learners at a similar level - One mentor the whole way - Two live classes a week - Monthly, cancel any time Start here One to one $150 USD a month, eight live classes - You and one mentor - Your own data and questions - Days and times you choose Enquire What families say ## Rated 4.9 across 547 Google reviews Learners and parents on Google, quoted exactly. ★★★★★ "The one step solution for my son. Modern Age Coders make learning coding so simple that kids love it. The teachers explain complex concepts clearly with practical exercises and interactive content." Ria Mukherjee Parent ★★★★★ "Modern Age Coders has been a game-changer for me. I struggled to grasp IT concepts and coding before joining, but their classes transformed everything. I can now confidently write complex programs with ease." Samriddha Mondal Student ★★★★★ "One of the most wonderful education centres out there. Education is not limited to school syllabus but focuses on skill development." Vansh Agarwal Student ★★★★★ "My child Dhairya is really enjoying the Modern Age Coders classes. This is his first online class and he eagerly looks forward to it. I can already see his improvement, and the teachers are very cooperative." Sonam Oswal Parent of Dhairya ★★★★★ "Modern Age Coders have wonderful teachers who teach in a clear, easy and practical way. The teacher boosts students' confidence and inspires them to learn without hesitation." Sonu Goyal Parent ★★★★★ "I highly recommend this computer coding class! The teachers are incredibly knowledgeable and passionate about coding." Ritu Kedia Parent Questions from Peru ## SQL and data analysis in Peru: questions and answers ### Are the classes in Spanish? No. Classes are live, online and in English only. Mentors in India use short sentences, explain each keyword plainly and adapt to your pace and accent; SQL itself is written in English words. ### Can I learn SQL from zero? Yes. Both adult courses and the teen course start with a first SELECT. If you already use spreadsheets, you will recognise many ideas. ### SQL or Python first for data analysis? SQL first for most analysts, because it is how data is fetched from company systems; Python follows for cleaning, charts and automation. Our analysis course teaches both in that order. ### Which database do you use? MySQL in the database course, and SQLite in lessons like the one on this page because it comes with Python. The SQL you learn carries over to PostgreSQL, SQL Server and others with small differences. ### Is the practice data Peruvian? Partly. Lessons mix international datasets with Peruvian registers such as Chiclayo's waste-collection table, which the Municipalidad Provincial de Chiclayo publishes openly with attribution required (ODC-By). ### What time are classes? Any day, any time, flexible: choose a batch, or for a very personalised plan choose 1-on-1 at the hour that suits your family. Our mentors are ten and a half hours ahead, so a 19:30 class in Peru starts at 06:00 the next morning in India. ### How many months until I am good at SQL? Basic queries take a few weeks. Being trusted with real reporting, joins and data checks takes months; our analysis course runs 8 to 10 months and the MySQL course 7 to 8. ### Is there an SQL course for teenagers? Yes, MySQL for teens, ages 13 to 18, over 5 to 6 months, taught in teen-only groups. ### How much does it cost? The monthly fee is listed in the fees section in US dollars, which is how your card is charged; your bank converts to soles. From India the page shows rupees. The first class is free, with no card. ### Is there a certificate at the end? Pass the final exam and we issue our own certificate of completion. No Peruvian university or state body is involved in it, so the queries and reports you can show matter more. ### Are you connected with the Municipalidad de Chiclayo? No. The register is open data that anyone may use with credit, which we give; the findings here are our own analysis, and we have no link with the municipality. Read next ## Related pages Further reading on data, for Peru. ### [Data science en inglés](/curso-de-data-science-en-ingles-peru) The next step after SQL, explained in Spanish. ### [Programación para adultos](/cursos-de-programacion-para-adultos-peru) Learning to code beside a job in Peru. ### [Programación para universitarios](/cursos-de-programacion-para-universitarios-peru) Courses alongside a Peruvian degree. ### [Coding and AI classes in Peru](/coding-and-ai-classes-in-peru) Every Peru page in one index. ### [Data analytics course](/data-analytics-course) Our analytics course, described in full. ### [How we teach](/how-we-teach) One live class, from start to end. ## More pages for Peru Part of the guide: [Every Peru page](/coding-and-ai-classes-in-peru) ### Subjects and courses - [AI agents course](/ai-agents-course-peru) - [AI agents for professionals](/ai-agents-for-professionals-peru) - [AI course for business](/ai-course-for-business-peru) - [AI course for kids](/ai-course-for-kids-peru) - [AI course for teens](/ai-course-for-teens-peru) - [AI for teachers](/ai-for-teachers-peru) - [AI for university students](/ai-course-for-university-students-peru) - [App development course](/app-development-course-peru) - [App development for teens](/app-development-for-teens-peru) - [C++ course](/c-plus-plus-course-peru) - [Data science course](/data-science-course-peru) - [Java course](/java-course-peru) - [Java for CS students](/java-for-computer-science-students-peru) - [Maths for kids in English](/maths-for-kids-in-english-peru) - [Maths tutor in English](/maths-tutor-in-english-peru) - [Minecraft coding for kids](/minecraft-coding-for-kids-peru) - [One-on-one coding tutor](/one-on-one-coding-tutor-peru) - [Online maths classes](/online-maths-classes-peru) - [Python course](/python-course-peru) - [Python for engineering students](/python-for-engineering-students-peru) - [Python for kids](/python-for-kids-peru) - [Roblox coding for kids](/roblox-coding-for-kids-peru) - [Scratch for kids](/scratch-for-kids-peru) - [Software development course](/software-development-course-peru) - [Vibe coding classes](/vibe-coding-classes-peru) - [Web development course](/web-development-course-peru) ### Subjects and courses (in Spanish) - [Agentes de IA para profesionales](/curso-de-agentes-de-ia-para-profesionales) - [Clases particulares de programación](/clases-particulares-de-programacion-online-peru) - [Crear apps: adolescentes](/crear-apps-curso-para-adolescentes-peru) - [Curso de agentes de IA](/curso-de-agentes-de-ia-peru) - [Curso de IA para adolescentes](/curso-de-ia-para-adolescentes-peru) - [Curso de IA para empresas](/curso-de-ia-para-empresas-peru) - [Curso de inteligencia artificial en inglés](/curso-de-inteligencia-artificial-en-ingles-peru) - [Curso de inteligencia artificial para niños](/curso-de-inteligencia-artificial-para-ninos-peru) - [Curso de Java en inglés](/curso-de-java-en-ingles-peru) - [Curso de Python en inglés](/curso-de-python-en-ingles-peru) - [Cursos de programación con certificado](/cursos-online-con-certificado-programacion-en-ingles) - [Data science y Python](/curso-de-data-science-en-ingles-peru) - [Desarrollo de aplicaciones](/curso-de-desarrollo-de-aplicaciones-en-ingles) - [Desarrollo de software](/curso-de-desarrollo-de-software-en-ingles-peru) - [Desarrollo web](/curso-de-desarrollo-web-en-ingles-peru) - [IA para docentes](/ia-para-docentes-curso-en-ingles) - [Java para universitarios](/curso-de-java-para-universitarios-peru) - [Matemáticas en inglés para niños](/clases-de-matematicas-en-ingles-para-ninos) - [Profesor de matemáticas en inglés](/profesor-de-matematicas-en-ingles-peru) - [Profesor particular de matemáticas online](/profesor-particular-de-matematicas-online-peru) - [Programación en Minecraft para niños](/programacion-minecraft-para-ninos-peru) - [Programación en Roblox para niños](/programacion-roblox-para-ninos-en-ingles) - [Python para ingeniería](/python-para-estudiantes-de-ingenieria-peru) - [Python para niños](/curso-de-python-para-ninos-peru) - [Scratch para niños en inglés](/scratch-para-ninos-en-ingles) - [Vibe coding en inglés](/vibe-coding-curso-en-ingles) More guides: [Coding and AI classes in Peru](/coding-and-ai-classes-in-peru) · [En español: clases de programación en inglés](/clases-de-programacion-en-ingles-peru) · [Start here: English-medium coding in Lima](/english-medium-coding-classes-lima) · [By age and stage: AI and coding for professionals](/ai-and-coding-for-professionals-peru) · [Exams, olympiads and school holidays: IB computer science tutor](/ib-computer-science-tutor-peru) · [Guides to choosing: An English-taught option to Crack The Code](/crack-the-code-alternative-in-english) · [Regions of Peru: Amazonas region](/online-coding-and-ai-classes-amazonas-region-peru) · [Cities: Arequipa: coding for every age](/coding-classes-in-arequipa-peru) · [Lima and Callao districts: Programación para niños en Ancón](/clases-de-programacion-para-ninos-ancon-lima) Start here ## Book a free SQL class In the free class you write a first query on a real table with the mentor and talk about the data you work with. The mentor sees how you think about tables and how the English feels, then suggests a course. Reading first is fine: see [what happens in a class](/how-we-teach), or open [any course syllabus](/courses). [WhatsApp us](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20I%20am%20in%20Peru%20and%20would%20like%20to%20learn%20SQL%20and%20data%20analysis%2C%20live%20online%20in%20English.%20Could%20I%20book%20a%20free%20first%20class%3F) · [+91 91233 66161](tel:+919123366161) · [connect@modernagecoders.com](mailto:connect@modernagecoders.com) Classes are live and online, in English only, with mentors in India. For a quick answer, message us on WhatsApp in English. ### Want a class sooner? Book a priority demo A priority demo is a full class of about 45 to 60 minutes. After the class the mentor sends a written skill report and a personal learning roadmap on WhatsApp. If you enrol, the demo fee is adjusted against your first month's fee. Share your demo Order ID with us on WhatsApp and we take it off. [Book a priority demo](/book-demo) ## Keep exploring Modern Age Coders ### Related courses and guides - [AI Agents & Automation for Business](/ai-agents-and-automation) - [Python Turtle Not Working? 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