Split PascalCase string to individual words
SELECT REGEXP_REPLACE('SmilingFaceWithOpenMouthAndColdSweat', '\\B([A-Z][^A-Z]*)', ' $1');
-- Smiling Face With Open Mouth And Cold Sweat
Source: adopted for Redshift from this StackOverflow answer
SELECT REGEXP_REPLACE('SmilingFaceWithOpenMouthAndColdSweat', '\\B([A-Z][^A-Z]*)', ' $1');
-- Smiling Face With Open Mouth And Cold Sweat
Source: adopted for Redshift from this StackOverflow answer