Data and analytics · Free · ₹0
SQL for PLC and SCADA Engineers
A first database for engineers who already read tags: what a relational database holds and how it differs from a CSV export, installing MySQL or SQL Server and connecting a client, tables, data types, keys and constraints, INSERT, UPDATE and DELETE, SELECT with filters, sorting, limits and calculated columns, aggregates and GROUP BY, string, date and number functions, the whole join family, UNION and temporary tables, subqueries, EXISTS and views, and normalisation up to third normal form. The video lessons teach standard SQL; the plant framing, the practice tasks and the assessments are written by EDWartens.

Inside the course



From the lessons

Why plant data ends up in a database
Simplilearn

Statements, tables and data types
Software Testing Mentor

Writing rows: INSERT, UPDATE and DELETE
Software Testing Mentor

Ranges, patterns, lists and missing values
Software Testing Mentor

Aggregates and GROUP BY: the shift report
Software Testing Mentor

Joining tables
Software Testing Mentor
Lesson frames belong to the creators named in the Credits below and are shown from YouTube.
What you will learn
Install MySQL or SQL Server and connect a client to it; create tables with the right data types and constraints; insert, update and delete rows without damaging a table; write SELECT queries with filters, sorting, limits and calculated columns; total and group rows with the aggregate functions, GROUP BY and HAVING; clean codes and timestamps with the string and date functions; join tables and predict what an inner, left, cross or self join will return before you run it; answer a question with a subquery, EXISTS or a view; and take a flat spreadsheet to a normalised schema with keys you can defend in a design review. Every one of those is ordinary SQL. What makes it a plant course is EDWartens' own notes, practice tasks and assessments, which set all of it on machine, production, alarm and downtime records.
- Install MySQL or SQL Server, connect a client, and read a refused connection for whether the server, the port or the password is wrong
- Create tables with the right data types, primary keys and constraints, and predict which INSERT a constraint will reject
- Insert, update and delete rows safely, running the SELECT first so you know how many rows will change
- Write SELECT queries with WHERE, BETWEEN, LIKE, IN and IS NULL, then sort, limit and calculate columns inside the query
- Produce shift-wise totals with COUNT, SUM and AVG, GROUP BY and HAVING, and clean batch codes and timestamps with the string and date functions
- Join machine, production and stoppage tables and predict the rows each join returns, answer harder questions with subqueries, EXISTS and views, and take a flat spreadsheet to third normal form
Course content
15 modules · 55 lessons · 9h 40m
In order, at whatever pace suits you. Each module ends with a practice task that builds on the last, and a short quiz.
- 01Why plant data ends up in a database4 lessons45m
- 02Installing a database and connecting a client4 lessons44m
- 03Statements, tables and data types4 lessons41m
- 04Keys and constraints4 lessons33m
- 05Writing rows: INSERT, UPDATE and DELETE4 lessons53m
- 06SELECT and the WHERE clause4 lessons34m
- 07Ranges, patterns, lists and missing values4 lessons29m
- 08Sorting, limiting and calculated columns4 lessons30m
- 09Aggregates and GROUP BY: the shift report4 lessons56m
- 10String, date and number functions4 lessons33m
- 11Joining tables4 lessons31m
- 12More joins, UNION and temporary tables4 lessons55m
- 13Subqueries, EXISTS and views4 lessons52m
- 14Normalisation, ER diagrams and a schema you can defend3 lessons44m
- 15Final assessment0 lessons0m
Requirements
- Who it is for
- Beginner. No database experience assumed and no programming background needed. If you can read a PLC tag list and a shift report, you can follow this course.
- Software
- MySQL Community Server with MySQL Workbench, or SQL Server Express with SQL Server Management Studio. Both are free downloads and a laptop is enough.
- Hardware
- None. Any Windows or Linux laptop that can run a database server locally.
SQL for PLC and SCADA Engineers at a glance
SQL for PLC and SCADA Engineers is a free, self-paced online data and analytics course from EDWartens India with 15 modules, 9h 40m of video lessons, written notes, practice tasks and assessments, and an optional verifiable certificate.
- Price
- ₹0, free for good. No trial, no card. Comparable classroom training of this length costs about ₹4,999.
- Format
- 15 self-paced modules, 9h 40m of video, written notes, a practice task per module and one final assessment.
- Level
- Beginner. Beginner. No database experience assumed and no programming background needed. If you can read a PLC tag list and a shift report, you can follow this course.
- Brand
- Vendor-neutral
- Software
- MySQL Community Server with MySQL Workbench, or SQL Server Express with SQL Server Management Studio. Both are free downloads and a laptop is enough.
- Hardware
- None. Any Windows or Linux laptop that can run a database server locally.
- Certificate
- Optional EDWartens Certificate of Completion, verifiable by code. Not a vendor credential.
- Video lessons by
- Software Testing Mentor, Simplilearn, NetworkChuck, Luke Barousse (independent creators, credited below)
- Language
- English
A shareable EDWartens certificate
Finish every module and pass the final assessment, and the optional EDWartens certificate is yours. It carries a unique verification code on a public page anyone can check, so it stands up when a recruiter looks it up. See it below.
- Add it to your LinkedIn profile in one click
- Link it from a CV or portfolio, the URL is permanent
- Publicly verifiable by code, not a PDF anyone can edit
- Issued by EDWartens India, the training centre itself
The course itself stays free whether or not you ever buy one.
Stuck? Ask a practising engineer
A free course usually means a comment section and hope. This one does not. Every module has an Ask-your-trainer panel that reaches the same engineers who teach our paid programme: people who commission panels for a living, not moderators.
- Questions answered in the context of the module you are on
- The same engineers who teach the AEP programme
- Career tools, CV help and public job listings included
- Your progress and notes stay in your account for good
Pairs well with
PLC programming · FreeSiemens TIA PortalFrom zero electrical knowledge to a working, simulated S7-1200 program, for nothing.
PLC programming · FreeSiemens TIA Portal in Three HoursThe first three hours of the Siemens TIA Portal course, cut to end on a win: what a PLC is, how it is wired, a project configured in TIA Portal, and your first ladder program running in simulation. Finish it in an evening or two, earn a certificate, and carry straight on into the full course.
PLC programming · FreeTIA Portal: Build a MachineOne machine, start to finish. Take a bottle filling line from a written specification and an I/O list to a structured S7-1200 program with a fill station, a capper, a reject sorter and an operator screen with alarms, then test it against a written record and archive it for hand-over. The lessons are the reference; the machine is yours, and it is what you submit.
Instrumentation · FreeInstrumentation for PLC EngineersThe half of the loop that is not code. Follow one measurement from the transmitter in the field, down the 4-20 mA loop, into the analog card, through NORM_X and SCALE_X into engineering units, out again to a valve, and back to the control room when the reading is wrong.Learner reviews
No reviews yet
Reviews here are written only by learners who have finished every module of SQL for PLC and SCADA Engineers, and they are published exactly as written. Finish the course and yours will be the first.
Common questions
Do I need any database experience?
No. The course starts at what a table, a row and a column are, and assumes only that you can read a tag list and a shift report. There is no programming prerequisite. If you keep production or downtime records in Excel today, the first module will feel familiar and the rest shows you what a database does that a spreadsheet cannot.
Do the video lessons use plant data?
No, and it is worth being plain about it. Every video lesson in this course teaches SQL in general. Not one of them mentions a historian, a plant tag, SCADA or a production database, because no free course of that kind exists. The plant application is written by EDWartens: the notes, the worked examples, the practice tasks and every assessment question are set on machine, production, alarm and downtime records. You take the language from the lessons and apply it to your plant in the practice.
Is this the same as an Oracle or Microsoft database certification?
No. Oracle's Database SQL certification and Microsoft's data platform exams are sat with those vendors and paid for separately. This course is preparation for the SQL they test and for the SQL a plant or MES job asks for. It is not that certification, it does not count towards one, and it is never described as one.
MySQL or SQL Server, which should I install?
Either, and the course walks through installing both. Nearly everything taught here is standard SQL that runs on both, and the places where they differ, such as LIMIT against TOP and FETCH FIRST, are pointed out where they come up. MySQL Community Server with Workbench is the lighter download; SQL Server Express with SSMS is the same family as the SQL Server that many SCADA, historian and MES products are installed against.
What will I practise on?
Each module ends with a written task on your own line's records: the ten things a shift records and which table each belongs in, a downtime table with its keys and constraints, the LIKE patterns that match your tag families, the row counts an inner join and a left join would each return. One worked example runs through the course, a machine master with a production log and a downtime log, so a learner who is not in a plant today can do every task on that instead.
Is the course really free?
Yes. Every module, practice task and assessment. You create an account so your progress is saved and the assessments can be marked. The certificate is the only paid item, and only if you want it.
What certificate do I get?
An EDWartens Certificate of Completion, issued when you have worked through every module and passed the final assessment at 60%, with a verification code anyone can check. It is not a vendor credential and is never described as one.
Who made the video lessons?
The creators named in the Credits block at the foot of this page, on their own YouTube channels. EDWartens did not make the videos and the creators are not affiliated with EDWartens. What EDWartens wrote is the study plan, the notes, the practice tasks and the assessments.
What you walk away with
Your certificate for SQL for PLC and SCADA Engineers
Finish the course, pass the final, and this is the document with your name on it.

Verifiable by anyone
A unique certificate number and a public verification page. A recruiter checks it in ten seconds.
Adds to LinkedIn in one click
Issuer, credential ID and URL prefilled, with 5 matching skills to pin to your profile.
QR code on the certificate
Scans straight to the verification page, so a printed copy proves itself.
Names what you can do
Lists the topics covered, from relational databases, tables, data types, primary keys and constraints on mysql and sql server to inner, outer, cross and self joins, union, subqueries, exists, views and normalisation to third normal form.
A permanent link
Put it on a CV, a portfolio or an application. The URL never changes.
Earned, not attended
Issued only after every module and a final assessment at 60%, with 3 attempts. That is why it stands up.
Learning is free. The certificate is optional.
Add it now and pay only when you have finished the course, or come back for it later. One-off, ₹459, GST included, with a receipt.
Issued by EDWartens India (Wartens Automation Private Limited) as a Certificate of Completion for this self-paced course. It is not a vendor certification, a university award or a CPD-accredited activity, and it does not certify competence on live equipment. Delivered electronically; see the refund policy.
Credits
Who made the video lessons
The video lessons in this course were created by the people below, not by EDWartens. Every lesson streams from its creator's own YouTube channel; EDWartens neither hosts nor sells that footage, and the creators are not affiliated with EDWartens and do not endorse this course. What EDWartens wrote is the study plan, the notes, the practice tasks and the assessments.
- Software Testing Mentorthe numbered SQL Tutorial series that carries most of the course: statements and syntax, DDL against DML, creating databases and tables, data types, constraints, INSERT, UPDATE and DELETE, SELECT and WHERE, the operators, sorting and limits, aggregates, GROUP BY and HAVING, the string, date and maths functions, the joins, UNION, subqueries and views
- Simplilearnthe two-minute introduction to SQL, the MySQL, SQL Server and Ubuntu installation walkthroughs, and the long-form sessions on joins, GROUP BY and HAVING, temporary tables, subqueries, date types, ER diagrams and normalisation
- NetworkChuckthe opening case for learning SQL now, with a first query run in the video
- Luke Baroussethe analyst's walkthrough of SELECT, ORDER BY and LIMIT used in the sorting and calculated columns module
If you are one of these creators and would like a lesson removed or credited differently, write to info@wartens.com.