Question

我正在使用DBite for SQLite，并编写了一个查询：

SELECT "Trade Details 2".TRADE_TYPOLOGY,
        "Trade Details 2".CONTRACT_ID,
        DATE("Trade Details 2".START_DATE) as START_DATE,
        DATE(substr("Trade Details 2".MATURITY_DATE, 0, 5) || '-' || 
        substr("Trade Details 2".MATURITY_DATE, 5,2) || '-' ||   
        substr("Trade Details 
        2".MATURITY_DATE, 7, 9)) as MATURITY_DATE,
        "Trade Details 2".NOTIONAL1,
        "Trade Details 2".COUNTERPARTYNAME,
        "Trade Details".TERM
        FROM "Trade Details 2"
        JOIN "Trade Details"
        WHERE "Trade Details 2".CONTRACT_ID="Trade Details".FC_ID
        ORDER BY "Trade Details 2".MATURITY_DATE desc

我的目标是确定MATURITY_DATE的数量，这样，当我运行SQL查询时，我只会得到MATURITY_DATE在2018-06-22至2099-12-30之间的交易。但是，我不确定要添加什么行以实现此目标。但是，当我添加行

2099-12-30>"Trade Details 2".MATURITY_DATE>2018-06-22

按语句排序上方，在where语句下方，运行时没有任何输出。我将如何正确执行此操作？

Answer 1

我认为您可以尝试将AND中的BETWEEN与where一起使用。

SELECT "Trade Details 2".TRADE_TYPOLOGY,
        "Trade Details 2".CONTRACT_ID,
        DATE("Trade Details 2".START_DATE) as START_DATE,
        DATE(substr("Trade Details 2".MATURITY_DATE, 0, 5) || '-' || 
        substr("Trade Details 2".MATURITY_DATE, 5,2) || '-' ||   
        substr("Trade Details 
        2".MATURITY_DATE, 7, 9)) as MATURITY_DATE,
        "Trade Details 2".NOTIONAL1,
        "Trade Details 2".COUNTERPARTYNAME,
        "Trade Details".TERM
        FROM "Trade Details 2"
        JOIN "Trade Details"
WHERE 
   "Trade Details 2".CONTRACT_ID="Trade Details".FC_ID
AND 
   "Trade Details 2".MATURITY_DATE BETWEEN '2018-06-22' AND '2099-12-30'
ORDER BY "Trade Details 2".MATURITY_DATE desc

或使用大于和小于

SELECT "Trade Details 2".TRADE_TYPOLOGY,
        "Trade Details 2".CONTRACT_ID,
        DATE("Trade Details 2".START_DATE) as START_DATE,
        DATE(substr("Trade Details 2".MATURITY_DATE, 0, 5) || '-' || 
        substr("Trade Details 2".MATURITY_DATE, 5,2) || '-' ||   
        substr("Trade Details 
        2".MATURITY_DATE, 7, 9)) as MATURITY_DATE,
        "Trade Details 2".NOTIONAL1,
        "Trade Details 2".COUNTERPARTYNAME,
        "Trade Details".TERM
        FROM "Trade Details 2"
        JOIN "Trade Details"
WHERE 
   "Trade Details 2".CONTRACT_ID="Trade Details".FC_ID
AND 
   "Trade Details 2".MATURITY_DATE > '2018-06-22' AND   "Trade Details 2".MATURITY_DATE < '2099-12-30'
ORDER BY "Trade Details 2".MATURITY_DATE desc

在SQL中在两个日期之间创建日期

1 个答案: