Lec 11 | PostgreSQL Data Types and Bulk Operations(COPY, \copy) | Python and SQL Foundations
In this lecture, you will learn how to choose the right PostgreSQL data types and how to import and export data efficiently using COPY, \copy, and pgAdmin.
We walk through practical SQL examples so you can understand not just syntax, but when and why to use each approach in real projects.
What you will learn:
Why data types matter for data quality, storage, and performance
Character types: char, varchar, and text
Numeric types: integer, bigint, numeric, real, and double precision
Date and time types: date, timestamp, timestamptz, and interval
Boolean and JSON vs JSONB basics
Casting values with CAST
Bulk data operations with COPY and \copy
How to import and export data with pgAdmin
Common import/export mistakes and how to fix them
Who this is for:
Beginners learning SQL and PostgreSQL
Data analysts and aspiring data engineers
Students preparing for database projects and interviews