[R] Passing arguments to SQL Query in R

guruappa guruappa at gmail.com
Thu Jul 26 10:59:37 CEST 2012

Hello all,

I am a newbie at R, with some experience in PERL.

I have a database table that contains the following data:
Name      | Score
======= | =====
Sachin T  | 25
Sachin T  | 53
Sachin T  | 57
Sachin T  | 34
Rahul D   | 38
Rahul D   | 31
Rahul D   | 53
Ricky P   |  7
Ricky P   | 45
Ricky P   | 27
Ricky P   | 17
Ricky P   | 86
Ricky P   | 48
Jacques K | 23
Jacques K | 86
Jacques K | 32

I want the summary data as below:

Name | Avg Score
Jacques K|47.00
Rahul D|40.67
Ricky P|38.33
Sachin T|42.25

Currently, I am trying to pass the name of the person as an argument in a
sql query by breaking the query into parts, and then concatenating the query
string.  Of course, the scheme is not working.

I want a query as below:

Then I can pass the parameters like we do in PERL.

If there is an alternative to the whole scheme, that would be wonderful.  a
way that would just take the whole table, and provide pivot table like

Thanks in advance,
Guruppa Padsali.

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