I keep getting this error: Whenever a table alias is defined, kindly use table alias name before the respective columns used in SELECT query
t1."Author" as 'Authors1',
t2."Author" as 'Authors2',
FROM "SET1" t1
LEFT JOIN "SET2" t2
ON t1."Book Title" = t2."Book Title"
WHERE Authors1 LIKE '%John%'
OR Authors2 LIKE '%John%'