PostgreSQL Data Types: Numeric, String, Date, JSON & Arrays

PostgreSQL Arrays: Creating, Indexing & Querying with Real Examples

Feb 20, 2026
POSTGRESQL

PostgreSQL Arrays: Complete Guide to Array Types PostgreSQL arrays store multiple values in a single column. They’re useful for semi-structured...

7 min Read

PostgreSQL Data Types: Numeric, String, Date, JSON & Array Types Complete Reference

Feb 20, 2026
POSTGRESQL

PostgreSQL Data Types: Complete Reference Guide Every database column needs a data type. You might think this is just a...

17 min Read

PostgreSQL Date Functions & Formatting: Complete Reference

Feb 20, 2026
POSTGRESQL

PostgreSQL Date Functions & Formatting: Complete Guide Working with dates requires specific functions - extracting year/month/day, calculating differences, formatting for...

8 min Read

PostgreSQL JSON Functions & Operators: Complete Guide with Real Examples

Feb 20, 2026
POSTGRESQL

PostgreSQL JSON Functions & Operators: Complete Guide PostgreSQL’s JSON and JSONB support is powerful but has a learning curve. The...

8 min Read

PostgreSQL UUID vs SERIAL: Choosing the Right Primary Key Strategy

Feb 20, 2026
POSTGRESQL

PostgreSQL UUID vs SERIAL: Choosing the Right Primary Key One of the first decisions you make when designing a table...

9 min Read

PostgreSQL: Absolute Value - Get Positive Numbers

Feb 20, 2026
POSTGRESQL

PostgreSQL: Absolute Value In my work building financial dashboards and inventory systems, I constantly need to measure differences regardless of...

7 min Read

PostgreSQL: Add Hours to Timestamp - Time Interval Arithmetic

Feb 20, 2026
POSTGRESQL

PostgreSQL: Add Hours to Timestamp You need to calculate future times by adding hours. Maybe you’re scheduling reminders, calculating shift...

5 min Read

PostgreSQL: Add Minutes to Timestamp - Minute-Level Time Arithmetic

Feb 20, 2026
POSTGRESQL

PostgreSQL: Add Minutes to Timestamp When you’re building scheduling systems, setting cache expiration times, or calculating delivery windows, minute-precision matters....

4 min Read

PostgreSQL: Calculate Age in Days - Days Between Dates

Feb 20, 2026
POSTGRESQL

PostgreSQL: Calculate Age in Days I constantly need to know “how old is this?” Whether it’s how many days an...

4 min Read

PostgreSQL: Calculate Business Days Between Dates

Feb 20, 2026
POSTGRESQL

PostgreSQL: Calculate Business Days Between Dates When you’re tracking SLAs, estimating project timelines, or calculating delivery windows, weekends and holidays...

3 min Read

PostgreSQL: CASE WHEN Multiple Conditions - Conditional Logic

Feb 20, 2026
POSTGRESQL

PostgreSQL: CASE WHEN Multiple Conditions I remember the first time I tried to classify employees into job levels based on...

8 min Read

PostgreSQL: Cast JSONB to Integer - Convert JSON Number Type

Feb 20, 2026
POSTGRESQL

PostgreSQL: Cast JSONB to Integer You’ve got numeric data stored inside JSONB objects, and you need to treat it as...

5 min Read