Ruby on rails PostgreSQL tsrange--重叠忽略等效范围?
我在Rails应用程序中有一个查询,如下所示:Ruby on rails PostgreSQL tsrange--重叠忽略等效范围?,ruby-on-rails,postgresql,overlap,range-types,Ruby On Rails,Postgresql,Overlap,Range Types,我在Rails应用程序中有一个查询,如下所示: # Returns any records whose period intersect the specified time # @see https://www.postgresql.org/docs/9.3/static/rangetypes.html # @see https://www.postgresql.org/docs/9.3/static/functions-range.html # @note The '()' means ex
# Returns any records whose period intersect the specified time
# @see https://www.postgresql.org/docs/9.3/static/rangetypes.html
# @see https://www.postgresql.org/docs/9.3/static/functions-range.html
# @note The '()' means exclude both sides of the range
#
# @param period_start [DateTime,Time] Start of the range
# @param period_end [DateTime,Time] End of the range
scope :overlapping, ->(period_start, period_end) {
where(
"#{table_name}.period && tsrange(:period_start, :period_end, '()')",
period_start: Time.at(period_start.to_i), # Caps precision to the second
period_end: Time.at(period_end.to_i) # Caps precision to the second
).distinct
}
但是,这里的问题是,不返回任何与period\u start
和period\u end
创建的范围具有相同周期的记录。为什么呢?我想重叠检查是否有任何交叉点
但是,这里的问题是,不会返回与period_start和period_end创建的范围具有相同期间的任何记录
那不是真的。不确定你的问题是什么,但不是这样
SELECT
tsrange(x,y),
tsrange(x,y) && tsrange(x,y) AS overlaps
FROM ( VALUES
('yesterday'::timestamp, 'today'::timestamp)
) AS t(x,y);
tsrange | overlaps
-----------------------------------------------+----------
["2017-04-24 00:00:00","2017-04-25 00:00:00") | t
(1 row)
繁荣!这是我测试中的一个问题,我正在测试的一个测试的范围相当于
period\u start..period\u start
而不是period\u start..period\u end
。谢谢:)