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Course work with SQL

T-SQL, PL/SQL, PL/pgSQL. Triggers, stored procedures, window functions, CTEs. Query optimization, indexing, database administration.

from UAH 2,000 Term from 5 days

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Directions of coursework in SQL

From basic SELECT queries to complex stored procedures and performance optimizations. We work with all major SQL dialects.

T-SQL (MS SQL Server)

Microsoft SQL Server and T-SQL: stored procedures, cursors, dynamic SQL, temporary tables, CTE. Working in SQL Server Management Studio with query profiling.

from UAH 2,000

PL/SQL (Oracle)

Oracle Database and PL/SQL: packages, triggers, collections, exception handling (EXCEPTION), bulk operations. Oracle SQL Developer for development and debugging.

from UAH 2,500

PL/pgSQL (PostgreSQL)

PostgreSQL and PL/pgSQL: functions with table returns, trigger functions, recursive CTEs, JSON operations, full-text search (tsvector), extensions.

from UAH 2,000

Triggers and Stored Procedures

BEFORE/AFTER/INSTEAD OF triggers for INSERT/UPDATE/DELETE. Stored procedures with IN/OUT/INOUT parameters, functions, cursors for line-by-line processing of data sets.

from UAH 2,000

Query optimization (EXPLAIN, indexes)

Analysis of execution plans (EXPLAIN ANALYZE), index creation (B-tree, Hash, GIN, GiST), table partitioning, materialized views, load profiling.

from UAH 2,500

Database administration (backups, migrations)

Backup (pg_dump, mysqldump), recovery, replication (master-slave), schema migrations (Flyway, Liquibase), access rights management (GRANT, REVOKE).

from UAH 2,500

How we work

TK analysis

We study the methodology, determine the DBMS, the SQL dialect, the necessary database objects and the level of complexity

Projecting

We create a database scheme, define tables, relationships, integrity constraints, indexes and sequences

Implementation

We write DDL/DML scripts, triggers, procedures, fill with test data, test all requests

Demonstration

We show the execution of requests, the operation of triggers and procedures. Payment after confirmation

What is included in the SQL course

Database creation DDL scripts (CREATE TABLE, INDEX, VIEW)
Triggers and stored procedures with documentation
Complex queries: JOINs, subqueries, CTEs, window functions
Test data (INSERT) — a minimum of 50 records per table

ER diagram and description of normalization
Execution plan analysis (EXPLAIN) for key queries
An explanatory note describing the structure of the database
Free edits and defense preparation

Reviews of SQL courses

"Course with T-SQL — warehouse management system. 14 tables, 8 stored procedures, triggers for automatic update of balances. The teacher gave an excellent rating, especially praised the optimization!"

Oleksiy R.

LNU named after Franka, Lviv

"I ordered a course with PostgreSQL - a database for the clinic. PL/pgSQL functions, recursive CTE for department hierarchy, full-text search by diagnoses. Very professional work!"

Marina V.

VNTU, Vinnytsia

"Course with Oracle PL/SQL - hotel reservation system. Packages, cursors, exception handling, audit through triggers. Code is clean, everything is documented. Protected with the maximum score!"

Ihor T.

ONPU, Odesa

All reviews

Frequently asked questions about SQL courses

It depends on the requirements of the method. SQL (relational DBMS) is suitable for structured data with clear connections: online stores, accounting systems, library catalogs. NoSQL — for unstructured or semi-structured data: social networks, IoT systems, large volumes. Most training programs focus on SQL, so it is the standard choice.

PostgreSQL is the best choice for educational projects: free, powerful, supports CTE, window functions, JSONB, arrays. MySQL is easier to set up and is good for web projects. MS SQL Server - if the university requires T-SQL and work in SSMS. Oracle — for courses in PL/SQL and corporate administration.

Yes, if it is provided for in your TK. We create triggers (BEFORE/AFTER INSERT/UPDATE/DELETE, INSTEAD OF for representations), stored procedures with IN/OUT/INOUT parameters, functions returning scalar values and data sets, cursors for line processing. All code is documented with comments.

Yes, query optimization is an important part of the SQL course. We use EXPLAIN / EXPLAIN ANALYZE to analyze the execution plan, create optimal indexes (B-tree, Hash, GIN, GiST for PostgreSQL), rewrite subqueries in JOIN where it is more efficient, use CTE and window functions instead of self-joins.

The standard term is from 5 to 10 days. Simple projects (creating tables, basic queries, 5-8 tables) — 3-5 days. Complex projects (triggers, procedures, optimization, GUI-interface, 10+ tables) — 7-14 days. Urgent mode with 30% surcharge — from 3 days. The price does not change depending on the selected DBMS.