I have two tables :
Table1 (col1, col2, col3, col4, val1, status)
Table2 (col1, col2, col3, col4, val2)
For Table1 and Table2, The columns (col1, col2, col3, col4) are the composite primary key.
Table2 may have duplicated rows, for that reason I would like to group by (col1, col2, col3, col4)
and sum(val2)
After that, I would like to update Table1.val1
by the value of sum(Table1.val2)
when Table1.col1 = Table2.col1 and Table1.col2 = Table2.col2 and Table1.col3 = Table2.col3 and Table1.col4 = Table2.col4 and status= 'V'
.
I did something like that:
UPDATE Table1
SET val1 = (
select t_sommevbrute.sumvalbrute
from (
Select col1,col2,col3,col4,SUM(val2) sumvalbrute
From Table2
Where col3 = 2014
And col2=51
And status= 'V'
GROUP BY col1, col2, col3, col4
) t_sommevbrute
WHERE Table1.col1 = t_sommevbrute.col1
and Table1.col2 = t_sommevbrute.col2
and Table1.col3 = t_sommevbrute.col3
and Table1.col4 = t_sommevbrute.col4)
Could someone help me please? Thank you