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我试图使用一些SQLite的函数,但列'newdate'和'newckey',当我运行查询时出现空白组合键。有什么建议?来自日期时间函数的SQL复合键
SELECT *,
(repeat||date) as 'ckey',
(repeat||newdate) as 'newckey'
FROM (SELECT transactions.id,
transactions.repeat,
transactions.date,
datetime(transactions.date,'+'||repeattransactions.interval||' days')
AS 'newdate'
FROM transactions, repeattransactions
WHERE transactions.repeat = repeattransactions.id
)
是日期和newdate已经字符串类型? – Matthew 2012-04-19 19:02:23
没有日期是一个SQLite日期类型 – Josh 2012-04-19 19:03:40
但我不明白这将有所作为,请参阅http://stackoverflow.com/questions/3018018/convert-a-date-to-a-string-in-sqlite – Josh 2012-04-19 19:09:44