=== on 16 Jun 2016, 14:41:37 Ann Campbell wrote:
https://www.researchgate.net/publication/222432151_Semantic_errors_in_SQL_queries_A_quite_complete_list

=== on 16 Jun 2016, 17:22:44 Ann Campbell wrote:
for ``++EXISTS++`` subquery selects, a single, non-1 value should be ignored. 

