[R-sig-DB] last_insert_id() problem
Pascal A. Niklaus
P@@c@|@N|k|@u@ @end|ng |rom un|b@@@ch
Tue Mar 8 16:52:14 CET 2005
Hi all,
I am trying to insert a row into a table and then to get the value of an
auto_increment field back. From the mysql command line, this looks like this:
mysql> insert into results set fileid='abc';
Query OK, 1 row affected (0.00 sec)
mysql> select last_insert_id();
+------------------+
| last_insert_id() |
+------------------+
| 12 |
+------------------+
1 row in set (0.00 sec)
However, I cannot successfully translate this into R. I tried:
dbSendQuery(con,paste("insert into results set userID=",userID,sep="") )
id <- dbGetQuery(con, "select LAST_INSERT_ID() AS I");
However, while a new row of data is inserted, id always returns 0. I wonder
whether this is because dbSendQuery is not the appropriate method to simply
execute a command, but I could not find an alternative.
Thanks for your help
Pascal
--
Pascal A. Niklaus
Institute of Botany
University of Basel
Schönbeinstrasse 6
CH-4056 Basel / Switzerland
ph. +41 61 267 3506
fax +41 61 267 3504
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