RaqForum 28 No.
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Sum Every 5 Rows

 
SQL(179)

【Question】
I have a table tb1:

SL 

5 

7 

7 

8 

8 

5 

7 

8 

2 

3 

4 

2 

The expected result:

1-5     35 

6-10    25 

11-12    6  

 

【Answer】
You need to create sequence numbers for each record before performing sums because SQL is lack of ordered sets. That’s a hassle. A simple way is handling it in SPL (Structured Process Language) that supports ordered sets.

A

1

$select SL from tb1

2

=A1.groups((#-1)\5:GN;sum(SL):SL)

3

=A2.run(GN=string(1+GN\*5)+"-"+string(min(A1.len(),5+GN\*5)))

A3 returns the final result:

undefined

 


SQL(179)
 
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