在mysql中將計數值顯示為兩個不同的列

Question

我在MySQL表中的數據具有以下格式。 我想在以下查詢中所示的兩種不同條件下檢索計數，我想將這些查詢合並為一個查詢，這意味着我希望第一個查詢結果在一個列中，第二個查詢結果在另一列中，這樣：

預期產量：

   count      totalcount
   --------------------------
   3          6

查詢：

 select count(*) as count from entries where 
 date between '2014-08-12' and '2014-08-14';

 select count(*) as totalcount from entries ;

mysql表中的數據：

  id          date
  ------------------------
  1           2014-08-14
  2           2014-08-13
  3           2014-08-12
  4           2014-08-11
  5           2014-08-10
  6           2014-08-09

sql小提琴http://sqlfiddle.com/#!2/faeb26/6

Answer 1

select sum(date between '2014-08-12' and '2014-08-14'), count(*) as totalcount from entries ;

SUM()的布爾表達式等於true或false，等於1或0。因此，只需使用SUM()而不是COUNT() 。

Answer 2

只需將兩個查詢放在一起：

select count(*) as count, b.totalcount from entries, 
  (select count(*) as totalcount from entries) b 
where date between '2014-08-12' and '2014-08-14';

Answer 3

select sum(c) as count, sum(tc) as totalcount
 from (select count(*) as c , 0 as tc from entries where date between '2014-08-12' and '2014-08-14'
        union all
       select 0 as c, count(*) as tc from entries)

Answer 4

簡單結合以導致其他select查詢嘗試

SELECT (select count(*) as count from entries where 
 date between '2014-08-12' and '2014-08-14'
) as count, (select count(*) as totalcount from entries) as totalcount;

演示鏈接