Is there a boolean literal in SQLite?

Question

I know about the boolean column type, but is there a boolean literal in SQLite? In other languages, this might be true

Answer 1

You can use BOOLEAN when creating a table:

sqlite3 :memory:
SQLite version 3.22.0 2018-01-22 18:45:57
Enter ".help" for usage hints.
sqlite> CREATE TABLE test (mybool BOOLEAN);

But this is not a real datatype and on the SQL description of the table we will have something like this:

"mybool" BOOLEAN NOT NULL CHECK(mybool IN(0,1))

Basically we create an SQL constrain constrain that the value should be 0 or 1. And therefore using TRUE/FALSE will pop an error:

sqlite> INSERT INTO test(mybool) VALUES (TRUE);
Error: no such column: TRUE

So, we can use the key word BOOLEAN but have to use 0/1 since it is not a "real" datatype.

When working with sqlalchemy we can use the datatype BOOLEAN without any problems