…boolean values (yes/now or something similar) in the table and if you get many columns and many rows you may want to…to much larger savings if you have hundreds of such columns. Lets see how things look for MyISAM for same tables: mysql> show table…
Post: Identifying the load with the help of pt-query-digest and Percona Server
December 29, 2011 By 3 Comments
…a period of time that allows you to gather enough statistics about the queries, after that time period remember to set it back to a value…a cold MySQL…Boolean: # Filesort 100% yes, 0% no # Tmp table 100% yes, 0% no # Tmp table…to do Filesort 100% of the times and also needs to create on-disk tmp tables…
Comment: Database problems in MySQL/PHP Applications
August 11, 2006 By 12 Comments
…to create a new table for a part of the data set is not a black or white thing. It involves understanding how…a million rows with an index on a Boolean column for example) is unlikely to be helpful unless you know your data well enough to…
Comment: How to find wrong indexing with glance view
August 23, 2008 By 27 Comments
…to 60 values so it can be converted to IN instead of using BETWEEN [1]. As all boolean operators are ‘AND’, mysql…a few rows. Enough about intersections. About booleans. has_foto? How many of your users have a…create (City, Gender, Age, LookingFor) and (City, Gender, Age, Available). So mysql…
