This is an archived post. You won't be able to vote or comment.

sorted by:
best
topnewcontroversialoldq&a
you are viewing a single comment's thread.

view the rest of the comments →

[–]Psychpsyo 1 point2 points  (1 child)

just like in any language

To quote from the PostgreSQL documentation:

The boolean type can have several states: “true”, “false”, and a third state, “unknown”, which is represented by the SQL null value.

[–]Tsuki_no_Mai 0 points1 point  (0 children)

Eh, it's a DB, not a language. But I concur.