RMySQL: dbWriteTable – R documentation

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RMySQL

dbWriteTable

Write a local data frame or file to the database.

Description

Write a local data frame or file to the database.

Usage

## S4 method for signature 'MySQLConnection,character,data.frame'
dbWriteTable(
  conn,
  name,
  value,
  field.types = NULL,
  row.names = TRUE,
  overwrite = FALSE,
  append = FALSE,
  ...,
  allow.keywords = FALSE
)

## S4 method for signature 'MySQLConnection,character,character'
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 `\"`.)

RMySQL

Database Interface and 'MySQL' Driver for R

v0.10.21

GPL-2

Authors

Jeroen Ooms [aut, cre] (<https://orcid.org/0000-0002-4035-0289>), David James [aut], Saikat DebRoy [aut], Hadley Wickham [aut], Jeffrey Horner [aut], RStudio [cph]

Initial release

dbWriteTable

Description

Usage

Arguments

RMySQL

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