Question

Hi i have a table like this

Activity     Date
---------------------
0          2012-11-20
1          2012-11-20
1          2012-11-20
1          2012-11-21
1          2012-11-21
0          2012-11-22

I need to select the record as

 Day-wise total   0's    1's    Date  
------------------------------------------
     3             1      2     2012-11-20
     2             0      2     2012-11-21
     1             1      0     2012-11-22

Answer 1

What you need is a GROUP BY date, COUNT(Activity) to get Day-wise total and a CASE expression to pivot the values of 1’s and 0’s. I used SUM here but it acts like COUNT like so:

SELECT
  COUNT(Activity) AS "Day-wise total",
  SUM(CASE WHEN Activity = 0 THEN 1 ELSE 0 END) AS "0's",
  SUM(CASE WHEN Activity = 1 THEN 1 ELSE 0 END) AS "1's",
  `Date` AS "Date"
FROM Table
GROUP BY `Date`;

SQL Fiddle Demo