MySQL计数自定义限制

Question

I'm making some report, my data look like this :

text    date                    text    date
a       18/01/2016 12:01        a       18/01/2016 13:01
b       18/01/2016 12:01        b       18/01/2016 13:01
c       18/01/2016 12:01        c       18/01/2016 13:01
d       18/01/2016 12:01        x       18/01/2016 13:01
e       18/01/2016 12:01        y       18/01/2016 13:01
f       18/01/2016 12:01        z       18/01/2016 13:01
g       18/01/2016 12:01        g       18/01/2016 13:01
h       18/01/2016 12:01        h       18/01/2016 13:01
i       18/01/2016 12:01        i       18/01/2016 13:01

To get the total number of text :

SELECT *, COUNT(*) AS total FROM table 
WHERE DAY(date) = DAY('2016-01-18') 
AND MONTH(date) = MONTH('2016-01-18') 
AND YEAR(date) = YEAR('2016-01-18') 
GROUP BY text ORDER BY total DESC

Result :

a   2
b   2
c   2
d   1
e   1
f   1
g   1
h   1
i   1
x   1
y   1
z   1

My problem is, i only want to use top 5 data every hour, and want a result like this :

data : 
a       18/01/2016 12:01        a       18/01/2016 13:01
b       18/01/2016 12:01        b       18/01/2016 13:01
c       18/01/2016 12:01        c       18/01/2016 13:01
d       18/01/2016 12:01        x       18/01/2016 13:01
e       18/01/2016 12:01        y       18/01/2016 13:01

result :
a   2
b   2
c   2
d   1
e   1
x   1
y   1

Answer 1

The query shown below will give the result required,

SELECT text, max(date) as maxdate, COUNT(*) AS total 
FROM table 
WHERE 
DAY(date) = DAY('2016-01-18') 
AND MONTH(date) = MONTH('2016-01-18') 
AND YEAR(date) = YEAR('2016-01-18') 
GROUP BY text ORDER BY maxdate DESC

I hope this helps.

Answer 2

That is simple using Mysql Limit, you can use "LIMIT 5", in your case your code will be like

SELECT *, COUNT(*) AS total FROM table 
WHERE DAY(date) = DAY('2016-01-18') 
AND MONTH(date) = MONTH('2016-01-18') 
AND YEAR(date) = YEAR('2016-01-18') 
GROUP BY text ORDER BY total DESC LIMIT 5

it should return only top 5 results.