02/ 11·5 lessons·1 h 55 min

Data types

Which type to pick and why: numeric vs float for money, text/boolean/null, timestamptz for time, uuid and PG18 uuidv7, enums/arrays, and an intro to jsonb. The right type up front removes a whole class of production bugs.

Start module→Continue · Numbers and money→Reread module→Next module →
/ lessons

Lessons

5 lessons · 1 h 55 min
  1. 01Numbers and money↳ continue from here#numeric#float#money25m
  2. 02text↳ continue from here#text#boolean#null20m
  3. 03Date↳ continue from here#timestamptz#time-zones#psql20m
  4. 04uuid and uuidv7↳ continue from here#uuid#uuidv7#primary-key25m
  5. 05enums↳ continue from here#enum#arrays#jsonb25m