Are you certain there exist rows in tb1 and tb2 that satisfy the condition? What happens when you try? Is any error message or number returned? Can you run the same query inside an SQLite management tool like SQLite Spy? Does it work there? Please provide us ALL of the relevant information when you post.
But in this case, it's fairly easy. (Easy enough for me to get it right? We'll see.) The subquery is returning more than one value. That's illegal. And I hope you mean to update every single row in tb1, because that's what your query will do. And your main query references tb2 without defining it. RobR -----Original Message----- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of yanhong.ye Sent: Thursday, August 23, 2012 7:32 AM To: sqlite-users@sqlite.org Subject: [sqlite] to table update update tb1 set col1=(select col1 from tb2 ) where tb1.co2=tb2.co2; it couldn't work _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
