139. JSON column types

Let’s recap what data types we’ve covered so far:

  • Boolean. TRUE or FALSE
  • Text. text values like emails, names, countries etc
  • Numeric. integer numbers like 1, 2, 99 or float 1.123, 129.33333
  • Date. Datetime, Interval for dealing with dates, timestamps and time intervals
  • NULL. No value

All these data types have one thing in common – they hold a single value.

Holding single value is great – it is easy to understand, easy to maintain. It’s a perfect choice for a column which will always have data (for example: email or book title). The price we pay...

“well worth the money”
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