mysql按月分组并补齐

select

a.month,

IFNULL(b.point_count_0, 0) as point_count_0,

IFNULL(b.point_count_1, 0) as point_count_1,

IFNULL(b.point_count_2, 0) as point_count_2,

IFNULL(b.point_count_3, 0) as point_count_3

from

(

select

DATE_FORMAT(CURDATE(), '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 1 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 2 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 3 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 4 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 5 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 6 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 7 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 8 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 9 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 10 month, '%Y-%m') as month

union

select

DATE_FORMAT(CURDATE() - interval 11 month, '%Y-%m') as month

) a

left join (

select

DATE_FORMAT(jsrp.create_time, '%Y-%m') as month,

count(jsrg.grade_code = '64b73c51de18904e31ee3365' or null) as point_count_0,

count(jsrg.grade_code = '64b73c5ede18904e31ee3366' or null) as point_count_1,

count(jsrg.grade_code = '64b73c78de18904e31ee3367' or null) as point_count_2,

count(jsrg.grade_code = '64b73c78de18904e31ee3368' or null) as point_count_3

from

jld_safe_risk_point jsrp

left join jld_safe_risk_grade jsrg

on

jsrp.grade_code = jsrg.grade_code

where

DATE_FORMAT(jsrp.create_time, '%Y-%m') > DATE_FORMAT(DATE_SUB(CURDATE(), interval 12 month), '%Y-%m')

group by

month

) b

on

a.month = b.month

order by

a.month asc

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