Conditional statements part 3

Conditions are booleans. Boolean is a data type with two possible values: 
TRUE or 
FALSE.
For example
10 > 100 - FALSE
10 > 5 - TRUE
10 > 5 AND 100 < 5 - FALSE
Boolean columns have only two values - either 1 or 0. 
TRUE indicates 1 and 
FALSE indicates 0
We can replace columns such as employed or unemployed to 
1 or 
0 to make it easier to filter data. To filter data using booleans we will use the 
IS TRUE or 
IS NOT TRUE keywords.
SELECT *
FROM table1
WHERE col1 IS NOT FALSE AND col2 IS TRUE