| ag_dbconn {ag.db} | R Documentation |
Some convenience functions for getting a connection object to (or collecting information about) the package annotation DB.
ag_dbconn() ag_dbfile() ag_dbschema(file="", show.indices=FALSE) ag_dbInfo()
file |
A connection, or a character string naming the file to print to (see
the file argument of the cat function for
the details).
|
show.indices |
The CREATE INDEX statements are not shown by default.
Use show.indices=TRUE to get them.
|
ag_dbconn returns a connection object to the package
annotation DB.
IMPORTANT: Don't call dbDisconnect on the connection
object returned by ag_dbconn or you will
break all the AnnDbObj objects defined in this package!
ag_dbfile returns the path (character string) to the
package annotation DB (this is an SQLite file).
ag_dbschema prints the schema definition of the
package annotation DB.
ag_dbInfo prints other information about the package
annotation DB.
ag_dbconn: a DBIConnection object representing an open
connection to the package annotation DB.
ag_dbfile: a character string with the path to the
package annotation DB.
ag_dbschema: none (invisible NULL).
ag_dbInfo: none (invisible NULL).
dbGetQuery,
dbConnect,
dbconn,
dbfile,
dbschema,
dbInfo
## Count the number of rows in the "probes" table: dbGetQuery(ag_dbconn(), "SELECT COUNT(*) FROM probes") ## The connection object returned by ag_dbconn() was created with: dbConnect(SQLite(), dbname=ag_dbfile(), cache_size=64000, synchronous=0) ag_dbschema() ag_dbInfo()