[R] help with RMySQL

2007-02-23 Thread Ravi S. Shankar
Hi R users,

I am using RMySQL to connect to a database in MySQL.

I have 3 questions.

 

1)When I give the following command

dbListTables(con)

 

I get the output 

 

stack imbalance in .Call, 142 then 143

stack imbalance in -, 140 then 141

stack imbalance in {, 138 then 139

stack imbalance in standardGeneric, 126 then 127

stack imbalance in class, 121 then 122

stack imbalance in -, 119 then 120

stack imbalance in {, 117 then 118

stack imbalance in -, 111 then 112

stack imbalance in {, 109 then 110

 

[1] newtable ravi

 

Could somebody tell me why it shows a stack imbalance?

 

2)For this command

testcmd1-fetch(dbSendQuery(con,select ticker from ravi where
banks=100))   

 dim(testcmd1)

The output is

[1] 500   1

However when I give the same command directly in MySQL command prompt I
get an output greater than 2000!! (Does fetch have a limitation?)

 

3) Also is it possible to get output where the NA values are removed?

 

Thanks in advance for the help

Ravi

 

 


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[R] Unable to connect to PostgreSQL

2007-02-15 Thread Ravi S. Shankar
Hi R users,

 

I am a beginner trying to connect to PostgreSQL using R

 

When I give the following command drv-dbDriver(PostgreSQL)

 

 I am getting the following errorError in
do.call(as.character(drvName), list(...)) :  could not find function
PostgreSQL

 

I have installed PostgreSQL 8.1 in my system. I am currently using R
2.3.1. 

 

Any help would be welcome

Thanks

 

Ravi

 


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[R] Unable to load RMySQL

2007-02-13 Thread Ravi S. Shankar
Hi R users,

 

I am unable to load RMySQL. The zip file is not available which I guess
is needed to load this pakage.

I also tried extracting the package from RMySQL_0.5-11.tar.gz  and then
pasted the package in the directory where R is loaded for which I am
getting the following error message

Error in library(RMySQL) : 'RMySQL' is not a valid package -- installed
 2.0.0?

 

Any help would be welcome

 

Thank you,

 

Ravi

 


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