Isn't interested in water to stick, general data is that the form of A code data to match the form of B data, and then find A duplicate values, and then look at the people forward B in the third column is the data in the table is greater than 1, if more than 1 just calculate A human activity, and then according to the first column of agencies export A total,
CodePudding user response:
Select institutions, b. b. code, b. number from where b. b code in (select a. code from a) and b. number 1 & gt;
CodePudding user response:
Use this try, I am also a small white
CodePudding user response:
Brother, I tried not goozyet
CodePudding user response:
Select b. institutions, count (*). B. the as number from a, b, where a. Code=b. code and b. number & gt; 1 group by b. institutions
CodePudding user response:
SELECT b. institutions, the COUNT number (b.) FROM a AS a INNER JOIN AS b ON a. b code=b. code and b. number & gt; 1 GROUP BY b. agency