SQL statement query within a certain period of time

When working on a certain project, due to the need to search for the start time and end time, it was a long time to look up at that time, and special notes were recorded for future queries.

单表：

1.SELECT name,create_time FROM user_info WHERE create_time BETWEEN DATE('2019-12-12') AND DATE('2020-02-02');

2.SELECT name,create_time FROM user_info WHERE create_time >= DATE('2019-12-12') AND create_time <= DATE('2020-02-02');

多表联查：

SELECT 
			SUM(sell.`money`) AS sellMoney, DATE_FORMAT(sell.`create_time`,'%Y-%m-%d') AS sellStatsDate,
			SUM(sell_reback.`money`) AS sellRebackMoney, DATE_FORMAT(sell_reback.`create_time`,'%Y-%m-%d') AS sellRebackStatsDate
FROM 
			sell 
LEFT JOIN sell_reback 
ON 
			DATE_FORMAT(sell.`create_time`,'%Y-%m-%d')=DATE_FORMAT(sell_reback.`create_time`,'%Y-%m-%d')
WHERE
				and sell.`create_time` BETWEEN DATE(#{startTime}) AND DATE(#{endTime}) 
GROUP BY 
			DATE_FORMAT(sell.`create_time`,'%Y-%m-%d')

The above points to note:

DATE_FORMAT (specific time field, time style)

The time field should be specific to which table time field

%Y-%m-%d：The query time has year, month and day

%Y-%m: The query time is year and month

%Y: The query time is years

As #{startTime}、#{endTime}for the startTime and endTime types in

String type

If you want to query is based on 年, or in 年月, then, or is 年月日in the form of

SQL语句的写法：

SELECT 
			SUM(sell.`money`) AS sellMoney, DATE_FORMAT(sell.`create_time`,'${value}') AS sellStatsDate,
			SUM(sell_reback.`money`) AS sellRebackMoney, DATE_FORMAT(sell_reback.`create_time`,'${value}') AS sellRebackStatsDate
FROM 
			sell LEFT JOIN sell_reback ON DATE_FORMAT(sell.`create_time`,'${value}')=DATE_FORMAT(sell_reback.`create_time`,'${value}')
GROUP BY 
			DATE_FORMAT(sell.`create_time`,'${value}') 

value值的类型是字符串，注意此刻使用的是'${value}'，如果使用的是#，则将单引号去掉

If the period of time you want to query is 年与年之间, or 年月与年月between, or 年月日与年月日between

For example, between 2017-2020
For example, between 2019-03 and 2019-09
For example, between 2020-01-10 —— 2020-04-20

SELECT 
	SUM(sell.`money`) AS sellMoney, 
	DATE_FORMAT(sell.`create_time`,#{value}) AS sellStatsDate
FROM 
	sell
WHERE 
	sell.`create_time` BETWEEN DATE(#{startTime}) AND DATE(#{endTime}) 

GROUP BY 
	DATE_FORMAT(sell.`create_time`,#{value})

Precautions:

The values of startTime and endTime must be in the form of year-month-day . For example, if you want to query between 2020-01-10 —— 2020-04-20, then startTime=“2020-01-10”, endTime=“2020-04-20”, even if the query is 2019——2020 In between, it should also be in the form of year-month-day. Since the main search is for the year, the month and day can be arbitrary
Since the return value of the query result is what we want, the affirmative result of the year query only wants the year, not the day and month, so the value value is needed at this time . The definition of the value value has been explained above, so only You need to pass in the corresponding value according to your needs

SQL statement query within a certain period of time

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