2 posts tagged with sql by Nothing.
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SQL Query Question

SQL query help. Given the (fictional but equivalent) table disk_status = computer_id:int, disk_id:int, datetime:datetime, temperature:float, rpm:int, I need to provide a table of disk status for a given computer_id, without knowing in advance how many disks there are. So if there were two disks for a particular computer, the result would have the header: datetime, disk_1_temperature, disk_1_rpm, disk_2_temperature, disk_2_rpm, disk_2_rpm [more inside]
posted by Nothing on Apr 16, 2009 - 25 answers

mysql query help please

MySQL question: Given a table with a datetime column and several additional columns which may or may not be null, is there an easy way to select the most recent previous non-null value of each column given a specific date? [more inside]
posted by Nothing on Mar 13, 2008 - 10 answers

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