Logical Operators
AND
left AND right → BOOLEAN
True if both operands are true.
Standard SQL: left AND right
Example: o.freight > 50 AND c.country = 'USA'
OR
left OR right → BOOLEAN
True if either operand is true.
Standard SQL: left OR right
Example: c.country = 'USA' OR c.country = 'Mexico'
NOT
NOT operand → BOOLEAN
Negates the operand.
Standard SQL: NOT operand
Example: NOT o.shipped_date ISNULL