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MYSQL查询近一年,近一周,今天数据 没有数据返回0
近一年
select count(0) total,date_format(gmt_created,'%Y%m') time
from application_main
where is_del!=2
and DATE_ADD(NOW(),INTERVAL(-12) MONTH) <= gmt_created
group by date_format(gmt_created,'%Y%m')
order by date_format(gmt_created,'%Y%m') desc
此sql运行后会返回近一年有数据的月份 需要配合工具类进行使用 工具类如下
/**
* 获取近一年 年月时间
public static List<ApplicationMainDto> getInitMonthMapWithZero2(Integer num) {
List<ApplicationMainDto> list = new ArrayList<>();
Calendar c = Calendar.getInstance();
for (int i = 0; i < num; i++) {
int k = c.get(Calendar.YEAR);
int j = c.get(Calendar.MONTH) + 1 - i;
String date = "";
if (j >= 1) {
date = k + (j >= 10 ? "" : "0") + j;
} else {
int p = 11 - i;//剩余循环次数
int m = c.get(Calendar.YEAR) - 1;
int n = c.get(Calendar.MONTH) + 2 + p;
date = m + (n >= 10 ? "" : "0") + n;
ApplicationMainDto applicationMainDto = new ApplicationMainDto();
applicationMainDto.setTime(date);
applicationMainDto.setTotal(0.0);
list.add(applicationMainDto);
return list;
}
业务层调用
返回结果:
{
"type":"success",
"data":[
"total":23.0,
"count":0.0,
"time":"202104"
"total":0.0,
"count":0.0,
"time":"202103"
"total":0.0,
"count":0.0,
"time":"202102"
"total":0.0,
"count":0.0,
"time":"202101"
"total":0.0,
"count":0.0,
"time":"202012"
"total":0.0,
"count":0.0,
"time":"202011"
"total":0.0,
"count":0.0,
"time":"202010"
"total":0.0,
"count":0.0,
"time":"202009"
"total":0.0,
"count":0.0,
"time":"202008"
"total":0.0,
"count":0.0,
"time":"202007"
"total":0.0,
"count":0.0,
"time":"202006"
"total":0.0,
"count":0.0,
"time":"202005"
"code":null,
"msg":null
近一月
SELECT
date_add( curdate(), INTERVAL ( cast( help_topic_id AS signed INTEGER ) - 30 ) DAY ) time,
ifnull( am.count, 0 ) total
mysql.help_topic h
LEFT JOIN (
SELECT
date_format( gmt_created, '%Y-%m-%d' ) time,
count( 0 ) count
application_main
WHERE
is_del = 1
GROUP BY
date_format( gmt_created, '%Y-%m-%d' )
) am ON date_add( curdate(), INTERVAL ( cast( h.help_topic_id AS signed INTEGER ) - 30 ) DAY ) = am.time
WHERE
h.help_topic_id <= DAY (
last_day(
curdate()))
ORDER BY
h.help_topic_id
返回结果:
近一周
SELECT
date_add( curdate(), INTERVAL ( cast( help_topic_id AS signed INTEGER ) - 6 ) DAY ) time,
ifnull( am.count, 0 ) total
mysql.help_topic h
LEFT JOIN (
SELECT
date_format( gmt_created, '%Y-%m-%d' ) time,
count( 0 ) count
application_main
WHERE
is_del = 1
GROUP BY
date_format( gmt_created, '%Y-%m-%d' )
) am ON date_add( curdate(), INTERVAL ( cast( h.help_topic_id AS signed INTEGER ) - 6 ) DAY ) = am.time
WHERE
h.help_topic_id <= 6
ORDER BY
h.help_topic_id
返回结果:
近一日
SELECT
a.HOUR time,
ifnull( b.count, 0 ) total
SELECT
0 HOUR UNION ALL
SELECT
01 HOUR UNION ALL
SELECT
02 HOUR UNION ALL
SELECT
03 HOUR UNION ALL
SELECT
04 HOUR UNION ALL
SELECT
05 HOUR UNION ALL
SELECT
06 HOUR UNION ALL
SELECT
07 HOUR UNION ALL
SELECT
08 HOUR UNION ALL
SELECT
09 HOUR UNION ALL
SELECT
10 HOUR UNION ALL
SELECT
11 HOUR UNION ALL
SELECT
12 HOUR UNION ALL
SELECT
13 HOUR UNION ALL
SELECT
14 HOUR UNION ALL
SELECT
15 HOUR UNION ALL
SELECT
16 HOUR UNION ALL
SELECT
17 HOUR UNION ALL
SELECT
18 HOUR UNION ALL
SELECT
19 HOUR UNION ALL
SELECT
20 HOUR UNION ALL
SELECT
21 HOUR UNION ALL
SELECT
22 HOUR UNION ALL
SELECT
23 HOUR
LEFT JOIN (
SELECT
date_format( gmt_created, '%H' ) HOUR,
count( 0 ) count
application_main
WHERE
is_del = 1
AND date_format( gmt_created, "%Y-%m-%d" ) = date_format( now(), "%Y-%m-%d" )
GROUP BY
date_format( gmt_created, '%H' )
) b ON a.HOUR = b.HOUR
ORDER BY
返回结果:
