make.db.names-methods {RMySQL}R Documentation

Make R/S-Plus identifiers into legal SQL identifiers

Description

These methods are straight-forward implementations of the corresponding generic functions.

Methods

dbObj
any MySQL object (e.g., MySQLDriver).
snames
a character vector of R/S-Plus identifiers (symbols) from which we need to make SQL identifiers.
name
a character vector of SQL identifiers we want to check against keywords from the DBMS.
unique
logical describing whether the resulting set of SQL names should be unique. Its default is TRUE. Following the SQL 92 standard, uniqueness of SQL identifiers is determined regardless of whether letters are upper or lower case.
allow.keywords
logical describing whether SQL keywords should be allowed in the resulting set of SQL names. Its default is TRUE
keywords
a character vector with SQL keywords, by default it is .MySQLKeywords define in RMySQL. This may be overriden by users.
case
a character string specifying whether to make the comparison as lower case, upper case, or any of the two. it defaults to any.
...
currently not used.

References

The set of SQL keywords is stored in the character vector .SQL92Keywords and reflects the SQL ANSI/ISO standard as documented in "X/Open SQL and RDA", 1994, ISBN 1-872630-68-8. Users can easily override or update this vector.

MySQL does add some keywords to the SQL 92 standard, they are listed in the .MySQLKeywords object.

See the Database Interface definition document DBI.pdf in the base directory of this package or http://stat.bell-labs.com/RS-DBI.

See Also

MySQL, dbReadTable, dbWriteTable, dbExistsTable, dbRemoveTable, dbListTables.

Examples

## Not run: 
# This example shows how we could export a bunch of data.frames
# into tables on a remote database.

con <- dbConnect("MySQL", "user", "password")

export <- c("trantime.email", "trantime.print", "round.trip.time.email")
tabs <- make.db.names(export, unique = T, allow.keywords = T)

for(i in seq(along = export) )
   dbWriteTable(con, name = tabs[i],  get(export[i]))
## End(Not run)

[Package RMySQL version 0.6-0 Index]