我尝试创建一个查询,只返回日期距当前日期减去3天的数据。我试过了:
Error: Expected INTERVAL expression
但这会返回def line(word, filename):
f = dict(list(enumerate(open(filename,'r'))))
return [k for k in f if word in f[k]]
答案 0 :(得分:6)
参见以下示例中的WHERE子句
#standardSQL
WITH yourTable AS (
SELECT i, date
FROM UNNEST(GENERATE_DATE_ARRAY('2017-04-15', '2017-04-28')) AS date WITH OFFSET AS i
)
SELECT *
FROM yourTable
WHERE date <= DATE_SUB(CURRENT_DATE(), INTERVAL 3 DAY)
-- ORDER BY date
顺便说一下,如果您还在使用旧版SQL,请参阅下面的示例
#legacySQL
SELECT *
FROM -- yourTable
(SELECT 1 AS id, DATE('2017-04-20') AS date),
(SELECT 2 AS id, DATE('2017-04-21') AS date),
(SELECT 3 AS id, DATE('2017-04-22') AS date),
(SELECT 4 AS id, DATE('2017-04-23') AS date),
(SELECT 5 AS id, DATE('2017-04-24') AS date),
(SELECT 6 AS id, DATE('2017-04-25') AS date)
WHERE TIMESTAMP(date) <= DATE_ADD(TIMESTAMP(CURRENT_DATE()), -3, 'DAY')
-- ORDER BY date
答案 1 :(得分:1)
这适用于字符串格式化的日期。
DATE(TIMESTAMP(date)) <= DATE_SUB(CURRENT_DATE(), INTERVAL 3 DAY)