SELECT
st.name,
st.class_code,
st.grade_code,
t.name AS head_teacher_name
FROM
students st
JOIN
teachers t ON st.class_code = t.head_teacher
ORDER BY
st.student_id;
SELECT
st.name,
st.class_code,
st.grade_code,
t.name AS head_teacher_name
FROM
students st
JOIN
teachers t ON st.class_code = t.class_code
ORDER BY
st.student_id;
SELECT
st.name,
st.class_code,
st.grade_code,
t.name AS head_teacher_name
FROM
students st
JOIN
scores sc ON st.student_id = sc.student_id
JOIN
teachers t ON sc.subject = t.subject
ORDER BY
st.student_id;
select trx_amt,count(mch_nm) as trx_cnt
from cmb_usr_trx_rcd
where mch_nm = '红玫瑰按摩保健休闲'
and year(trx_time) = 2024
and month(trx_time) in (1, 2, 3, 4, 5, 6, 7)
group by trx_amt
order by trx_cnt desc
limit 5
select date(trx_time) as trx_date,max(trx_amt) as max_trx_amt,min(trx_amt) as min_trx_amt,avg(trx_amt) as avg_trx_amt,sum(trx_amt) as total_trx_amt
from cmb_usr_trx_rcd
where mch_nm='红玫瑰按摩保健休闲'
and date(trx_time) between '2024-09-01' and '2024-09-30'
group by date(trx_time)
order by date(trx_time)
select date(trx_time) as trx_date,max(trx_amt) as max_trx_amt,min(trx_amt) as min_trx_amt,avg(trx_amt) as avg_trx_amt,sum(trx_amt) as total_trx_amt
from cmb_usr_trx_rcd
where mch_nm='红玫瑰按摩保健休闲'
and date(trx_time) between '2024-09-01' and '2023-09-30'
group by date(trx_time)
order by date(trx_time)
select date(trx_time) as trx_date,max(trx_amt) as max_trx_amt,min(trx_amt) as min_trx_amt,avg(trx_amt) as avg_trx_amt,sum(trx_amt) as total_trx_amt
from cmb_usr_trx_rcd
where mch_nm='红玫瑰按摩保健休闲'
and date(trx_time) between '2024-09-01' and '2023-09-30'
group by date(trx_time)
order by trx_date
select mch_nm,sum(trx_amt) as sum_trx_amt
from cmb_usr_trx_rcd
where year(trx_time)=2024 and usr_id='5201314520'
group by mch_nm
order by sum_trx_amt desc
select
*
from
cmb_usr_trx_rcd
where
date(trx_time)
between '2024-09-01' and '2024-09-30'
and hour(trx_time) in (22,23,0,1,2,3,4,5)
and usr_id = '5201314520'
order by trx_time
select
*
from
cmb_usr_trx_rcd
where
date(trx_time)
between '2024-09-01' and '2024-09-30'
or hour(trx_time) in (22,23,0,1,2,3,4,5)
and usr_id = '5201314520'
order by trx_time
select
*
from
cmb_usr_trx_rcd
where
date(trx_time)
between '2024-09-01' and '2024-09-30'
and (
(hour(trx_time) >= 22)
AND
(hour(trx_time) between 0 and 5)
)
and usr_id = '5201314520'
order by trx_time
select * from cmb_usr_trx_rcd
where
date(trx_time)
between '2024-09-01' and '2024-09-30'
and hour(trx_time) between 1 and 5
and usr_id = '5201314520'
order by trx_time