dbWriteTable,MySQLConnection,character,data.frame-method: Write a local data frame or file to the database.

Description

Write a local data frame or file to the database.

Usage

"dbWriteTable"(conn, name, value, field.types = NULL, row.names = TRUE, overwrite = FALSE, append = FALSE, ..., allow.keywords = FALSE)
"dbWriteTable"(conn, name, value, field.types = NULL, overwrite = FALSE, append = FALSE, header = TRUE, row.names = FALSE, nrows = 50, sep = ",", eol = "\n", skip = 0, quote = "\"", ...)

Arguments

conn

a MySQLConnection object, produced by dbConnect

name

a character string specifying a table name.

value

a data.frame (or coercible to data.frame) object or a file name (character). In the first case, the data.frame is written to a temporary file and then imported to SQLite; when value is a character, it is interpreted as a file name and its contents imported to SQLite.

field.types

character vector of named SQL field types where the names are the names of new table's columns. If missing, types inferred with dbDataType).

row.names

A logical specifying whether the row.names should be output to the output DBMS table; if TRUE, an extra field whose name will be whatever the R identifier "row.names" maps to the DBMS (see make.db.names). If NA will add rows names if they are characters, otherwise will ignore.

overwrite

a logical specifying whether to overwrite an existing table or not. Its default is FALSE. (See the BUGS section below)

append

a logical specifying whether to append to an existing table in the DBMS. Its default is FALSE.

...

Unused, needs for compatibility with generic.

allow.keywords

logical indicating whether column names that happen to be MySQL keywords be used as column names in the resulting relation (table) being written. Defaults to FALSE, forcing mysqlWriteTable to modify column names to make them legal MySQL identifiers.

header

logical, does the input file have a header line? Default is the same heuristic used by read.table, i.e., TRUE if the first line has one fewer column that the second line.

nrows

number of lines to rows to import using read.table from the input file to create the proper table definition. Default is 50.

sep

field separator character

eol

End-of-line separator

skip

number of lines to skip before reading data in the input file.

quote

the quote character used in the input file (defaults to \".)