made alternative query more robust

data/questions_gen_postgres.csv

@@ -5,7 +5,7 @@ What is the average number of citations received by publications in the last 5 y
 Which authors have published papers in journals within the past 20 years?,"SELECT DISTINCT {author.name, author.aid} FROM author JOIN writes ON author.aid = writes.aid JOIN publication ON writes.pid = publication.pid WHERE publication.year >= extract(YEAR FROM CURRENT_DATE) - 20;",academic,date_functions,
 What's the difference in time between the first and last paper published?,SELECT max(YEAR) - min(YEAR) AS time_difference FROM publication;,academic,date_functions,
 "Which authors have written publications in both the domain ""Machine Learning"" and the domain ""Data Science""?","SELECT {author.name,author.aid} FROM author WHERE author.aid IN (SELECT domain_author.aid FROM domain_author WHERE domain_author.did IN (SELECT domain.did FROM DOMAIN WHERE domain.name IN ('Machine Learning', 'Data Science') ) GROUP BY 1 HAVING COUNT(DISTINCT domain_author.did) = 2);",academic,group_by,
-What is the total number of citations received by each author?,"SELECT {author.name, author.aid}, sum(publication.citation_num) AS total_citations FROM author JOIN writes ON author.aid = writes.aid JOIN publication ON writes.pid = publication.pid GROUP BY {} ORDER BY total_citations DESC NULLS LAST;SELECT a.name, COUNT(c.cited) AS total_citations FROM author a JOIN writes w ON a.aid = w.aid JOIN publication p ON w.pid = p.pid JOIN cite c ON p.pid = c.cited GROUP BY a.name ORDER BY total_citations DESC;",academic,group_by,
+What is the total number of citations received by each author?,"SELECT {author.name, author.aid}, sum(publication.citation_num) AS total_citations FROM author JOIN writes ON author.aid = writes.aid JOIN publication ON writes.pid = publication.pid GROUP BY {} ORDER BY total_citations DESC NULLS LAST;SELECT {a.aid, a.name}, COUNT(c.cited) AS total_citations FROM author a JOIN writes w ON a.aid = w.aid JOIN publication p ON w.pid = p.pid JOIN cite c ON p.pid = c.cited GROUP BY {} ORDER BY total_citations DESC;",academic,group_by,
 What is the total number of publications published in each year?,"SELECT publication.year, COUNT(DISTINCT publication.pid) AS total_publications FROM publication GROUP BY publication.year ORDER BY publication.year;",academic,group_by,
 What is the average number of references cited by publications in each domain name?,"SELECT {domain.name,domain.did}, AVG(publication.reference_num) AS average_references FROM domain_publication JOIN publication ON domain_publication.pid = publication.pid JOIN domain ON domain.did = domain_publication.did GROUP BY {};",academic,group_by,
 What is the average number of citations received by publications in each year?,"SELECT publication.year, AVG(publication.citation_num) AS average_citations FROM publication GROUP BY publication.year ORDER BY publication.year NULLS LAST;",academic,group_by,