SAS Proc SQL Group By returns multiple rows per group

Posted by & filed under Coding, SAS, SQL.

Just wanted to note that for traditional SQL implementations (e.g., MySQL, MS-SQL), the Group By statement used to aggregate a variable by certain variable(s) returns 1 row for each group. When a column that is not unique within a group is also selected, then the row that’s returned is determined somehow by the DB software…. Read more »

WordPress and MySQL – error establishing a database connection

Posted by & filed under Linux.

My server’s been going down quite often recently (once a week). I believe it is a problem with the disk. Usually rebooting the server makes everything (including my blog) work again. Recently, I got the message “error establishing a database connection” even after the reboot. After many tries, this worked for me. Basically, my options… Read more »