I have a sales table th开发者_如何学Goat shows the date and time of each sale. For example: saleid | saledate |saletime
i try to run such code $collection->group(array(\'goods_id\'=>1, \'server_id\'=>1), array(\'coun开发者_如何学JAVAt\' => 0, \'ip\'=>\'\', \'date\'=>\'\'), \'function (obj, prev) { pr
I want to return the most recent ten (complete) rows from a table, but ensuring they all have unique \'alternate_id\'s.If there are two in the top ten with the same alternate_id I don\'t care which I
I have a DB Table with a date and a field called posneg, t开发者_开发百科he value is either \'pos\', \'neu\' or \'neg\'.
I create a t开发者_开发技巧able in HIVE. It has the following columns: id bigint, rank bigint, date string
I\'m trying to do the equivalent of a \"group by\" to pull a list of all Guesses on a Quiz owner\'s quizzes, grouped by user and annotated with a count of how many guesses that user has made.
alright, so lets say i have three tables, as follows : employees(ID, name) sessions(ID, starts_at, ends_at, day)
I am doing a mysql query to count the number of entries each minute and graphing the result.The result out开发者_Go百科put only shows the timestamps where the amount isn\'t zero.This is causing my gra
I have two tables that have identical columns. One table houses imported data, the other table houses data specific to my application:
I am trying to figure out how to query a table (the table is actually a result set, so it will be a subquery), group it by ColA=ColB (see below), and create a calculated field all in one step.
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