what is a sub query?how will you calculate working days in
a month using sub query?
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Answer Posted / p.rajasekar
ex
1)Method
Table tab1 data like Followings
Month date1 Working
Jan 1 0
Jan 1 1
Jan 1 1
Jan 1 0
.
.
.
Then the query should be
select Month,count(Working) from monthname m where working=1
group by Month,working
You will get answer 2;
2 Method
If we store the working days in same column
eg like(1=>Denotes Working,0=>denotes off)
Month Day1
Jan 101010101111
select Month,length(trim(replace(b.Day1,'0','')))
NoofWorkDays from workdays b
Please test it.Let me know the feed back
| Is This Answer Correct ? | 1 Yes | 2 No |
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