Search Results for: mysql function returns table

Your troubles are over, pt-heartbeat 2.1

Poor pt-heartbeat 2.1: it was perfectly fine through Percona Toolkit 2.1.7, but it’s had a rough life since. Its troubles are finally over as of Percona Toolkit 2.1.10. At a conference recently, a user joked to me that “Percona Toolkit is awesome, but you really broke pt-heartbeat.” It’s true, and if you haven’t heard or […]

Percona Toolkit 2.2.2 released; bug fixes include pt-heartbeat & pt-archiver

During the Percona Live MySQL Conference & Expo 2013 the week before last, we quietly released Percona Toolkit 2.2.2 with a few bug fixes: pt-archiver –bulk-insert may corrupt data pt-heartbeat –utc –check always returns 0 pt-query-digest 2.2 prints unwanted debug info on tcpdump parsing errors pt-query-digest 2.2 prints too many string values Some tools don’t […]

Paul McCullagh answers your questions about PBXT

Following on from our earlier announcement, Paul McCullagh has responded with the answers to your questions – as well as a few I gathered from other Percona folks, and attendees of OpenSQL Camp. Thank you Paul! What’s the “ideal” use case for the PBXT engine, and how does it compare in performance?  When would I […]

Query_cache and column level privileges

Recently we were puzzled by question how query_cache works with column level privileges. The question was appeared as we discovered function query_cache_send_result_to_client is called before real parsing of query, so at the moment of execution the query_cache is not able to know which columns are accessed. Looking into source code I found out that in […]