Monday, May 26, 2014

Store count of thf rows to arraylist
































































Hello,
































































I tried to count the rows of each attribute which called "wbuch", any way i use the following sql request:
































































































Java Code:






































































SELECT wbuch, COUNt(*) FROM myTable GROUP BY wbuch;




































































And the result was the following table:































































+-------+----------+-----+































































| wbuch | COUNt(*) |































































+-------+-----------------+































































| 12 | 15 |































































| 13 | 334 |































































| 15 | 20 |































































| 16 | 488 |































































| 17 | 16 |































































| 20 | 252 |































































| 21 | 24 |































































| 23 | 599 |































































| 30 | 599 |































































| 31 | 508 |































































| 33 | 599 |































































| 34 | 491 |































































| 35 | 571 |































































| 36 | 643 |































































| 37 | 152 |































































| 46 | 419 |































































+-------+------------------+































any way i want to store the row number's of each "wbuch" in arry list, but i didnt get it
































































































Java Code:






































































public List<Integer> WbSeiten(){
private List<Integer> wbList = new ArrayList<>();
int rowCount = 0;
try (Statement stmt = con.createStatement();) {
String sql = "SELECT wbuch, COUNt(*) FROM myTable "
+ "GROUP BY wbuch";
ResultSet result = stmt.executeQuery(sql);
while (result.next()) {
rowCount =result.getInt("COUNt(*)");
wbList.add(rowCount);
}
} catch (SQLException e) {
}
return wbList;
}




































































what is wrong with my snippet ?? And how to do it correctly






























































































No comments:

Post a Comment