Sql of note

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Revision as of 19:26, 18 September 2012 by David (talk | contribs) (→‎Date / Time)
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Example of Time bucket

select
 from_unixtime(timestamp-timestamp%3600)as time,
 count(*)
from
 table
where
 data like 'Destination directory %does not exist at%' and
 FROM_UNIXTIME(timestamp) > subdate(now(),interval 4 day)
group by timestamp-timestamp%3600
order by time;

sqlite

.tables
.schema


Date / Time

These all return dates and times.

Last day of this month:

SELECT date('now','start of month','+1 month','-1 day');

the first day of this monnth:

SELECT date('now','start of month');

first day of last month:

SELECT date('now','start of month','-1 month');

last day of last month:

SELECT date('now','start of month','-1 day');

get epoch:

select strftime( '%s' , "2012-09-30") ;

convert from epoch to date:

SELECT datetime( 1092941466 , 'unixepoch');

convert back and forth:

SELECT datetime( strftime( '%s' , "2012-09-30") , 'unixepoch');

Also see