|
|
| Тема |
 не ми излизат сметките |
|
| Автор | k (Нерегистриран) | |
| Публикувано | 04.06.03 12:15 |
|
|
|
При изчисленията не получавам "правилните стойности". Имате ли идейка защо става това нещо и как да се справя с проблема.
Ето едно примерче:
(полетата, вкл. в изчисленията (MDWorkDays,WDays) са от тип tinyint(2))
Тая sum функция при групиране дава 4 ст. вповече.
mysql> SELECT 110/T_MonthDays.MDWorkDays*SUM(T_Work.WDays) AS A3 FROM T_Work,T_Employed_Ch,T_Employed,T_MonthDays WHERE T_Work.CRid=T_Employed.CRid AND T_Employed_Ch.URid=T_Employed.URid AND T_Employed_Ch.UURid=T_Work.UURid AND T_MonthDays.MDMonth=T_Work.WMonth AND T_Work.CRid=2 AND T_Work.WMonth='2003-04-01' AND T_Work.WPayMonth<='2003-05-01' AND T_Employed.URid=2 GROUP BY T_Employed.URid;
+--------+
| A3 |
+--------+
| 110.04 |
+--------+
1 row in set (0.00 sec)
mysql> SELECT 110/T_MonthDays.MDWorkDays*T_Work.WDays AS A3 FROM T_Work,T_Employed_Ch,T_Employed,T_MonthDays WHERE T_Work.CRid=T_Employed.CRid AND T_Employed_Ch.URid=T_Employed.URid AND T_Employed_Ch.UURid=T_Work.UURid AND T_MonthDays.MDMonth=T_Work.WMonth AND T_Work.CRid=2 AND T_Work.WMonth='2003-04-01' AND T_Work.WPayMonth<='2003-05-01' AND T_Employed.URid=2;
+--------+
| A3 |
+--------+
| 110.00 |
+--------+
1 row in set (0.00 sec)
mysql> select T_MonthDays.MDWorkDays from T_MonthDays where MDMonth='2003-04-01';
+------------+
| MDWorkDays |
+------------+
| 21 |
+------------+
1 row in set (0.00 sec)
mysql> SELECT SUM(T_Work.WDays) FROM T_Work,T_Employed_Ch,T_Employed WHERE T_Work.CRid=T_Employed.CRid AND T_Employed_Ch.URid=T_Employed.URid AND T_Employed_Ch.UURid=T_Work.UURid AND T_Work.CRid=2 AND T_Work.WMonth='2003-04-01' AND T_Work.WPayMonth<='2003-05-01' AND T_Employed.URid=2 GROUP BY T_Employed.URid; +-------------------+
| SUM(T_Work.WDays) |
+-------------------+
| 21 |
+-------------------+
1 row in set (0.00 sec)
mysql> select 110/21*21;
+-----------+
| 110/21*21 |
+-----------+
| 110.00 |
+-----------+
1 row in set (0.00 sec)
mysql> show variables like 'version';
+---------------+---------+
| Variable_name | Value |
+---------------+---------+
| version | 3.23.41 |
+---------------+---------+
1 row in set (0.00 sec)
| |
| |
| 
|
|
