/courses/sql/postgresql-for-data-engineers/Recent content in PostgreSQL for Data Engineers on DATATWEETSHugoenCopyright (c) 2025 DatatweetsTue, 23 Jun 2026 09:00:00 +0200/courses/sql/postgresql-for-data-engineers/lesson-1-introduction-to-postgresql/Fri, 14 Nov 2025 09:00:00 +0200/courses/sql/postgresql-for-data-engineers/lesson-1-introduction-to-postgresql/Discover why data engineers reach for PostgreSQL instead of SQLite, connect to a Postgres server from Python with psycopg2, create your first table, and learn why transactions matter./courses/sql/postgresql-for-data-engineers/lesson-2-designing-tables-and-choosing-data-types/Fri, 14 Nov 2025 09:00:00 +0200/courses/sql/postgresql-for-data-engineers/lesson-2-designing-tables-and-choosing-data-types/Inspect a table’s data types, fix an out-of-range integer, and choose precise numeric, string, enumerated, boolean, and date types so your tables save space and reject bad data./courses/sql/postgresql-for-data-engineers/lesson-3-prepared-statements-and-preventing-sql-injection/Fri, 14 Nov 2025 09:00:00 +0200/courses/sql/postgresql-for-data-engineers/lesson-3-prepared-statements-and-preventing-sql-injection/See how unsafe string formatting opens the door to SQL injection, then defend your database with parameterized queries and prepared statements that are both safer and faster./courses/sql/postgresql-for-data-engineers/lesson-4-loading-and-copying-data/Fri, 14 Nov 2025 09:00:00 +0200/courses/sql/postgresql-for-data-engineers/lesson-4-loading-and-copying-data/Learn how psycopg2 converts Python values with mogrify, batch many rows into one INSERT, bulk-load CSV files with COPY, export tables back to files, and copy data between tables in pure SQL./courses/sql/postgresql-for-data-engineers/lesson-5-managing-users-and-databases/Fri, 14 Nov 2025 09:00:00 +0200/courses/sql/postgresql-for-data-engineers/lesson-5-managing-users-and-databases/Secure your Postgres server: create password-protected users, grant and revoke privileges, build readonly and readwrite groups around the least privilege principle, and create new databases and schemas./courses/sql/postgresql-for-data-engineers/lesson-6-project-installing-postgresql-locally/Fri, 14 Nov 2025 09:00:00 +0200/courses/sql/postgresql-for-data-engineers/lesson-6-project-installing-postgresql-locally/Install PostgreSQL and psycopg2 on Windows, macOS, or Linux, then connect from Python and create your first local table to confirm everything works./courses/sql/postgresql-for-data-engineers/lesson-7-guided-project-building-a-crime-reports-database/Fri, 14 Nov 2025 09:00:00 +0200/courses/sql/postgresql-for-data-engineers/lesson-7-guided-project-building-a-crime-reports-database/Bring the whole module together: create a database and schema, profile a real Boston crime dataset to pick data types, build and load a table, then secure it with readonly and readwrite groups and users.