0 votes 0 votes Show that, in SQL, <> all is identical to not in. Databases databases korth-edition6 relational-model sql descriptive + – ajaysoni1924 asked Mar 25, 2019 ajaysoni1924 223 views answer comment Share Follow See 1 comment See all 1 1 comment reply Gurdeep Saini commented Mar 26, 2019 reply Follow Share https://dba.stackexchange.com/questions/155650/authoritative-source-that-and-are-identical-in-performance-in-sql-server 0 votes 0 votes Please log in or register to add a comment.