rq_copy_to: Copy local R table to remote data handle.

In WinVector/rquery: Relational Query Generator for Data Manipulation at Scale

Copy local R table to remote data handle.

Description

Copy local R table to remote data handle.

Usage

rq_copy_to(
  db,
  table_name,
  d,
  ...,
  qualifiers = NULL,
  overwrite = FALSE,
  temporary = TRUE,
  rowidcolumn = NULL
)

Arguments

db	database connection handle.
table_name	name of table to create.
d	data.frame to copy to database.
...	force later argument to be by name
qualifiers	optional named ordered vector of strings carrying additional db hierarchy terms, such as schema.
overwrite	logical, if TRUE try to overwrite existing table.
temporary	logical, if TRUE try to mark table as temporary.
rowidcolumn	character, name to land row-ids.

Value

a relop representation of the data

See Also

db_td, mk_td, materialize, execute, to_sql

Examples

if (requireNamespace("DBI", quietly = TRUE) && requireNamespace("RSQLite", quietly = TRUE)) {
  db <- DBI::dbConnect(RSQLite::SQLite(), ":memory:")
  d <- rq_copy_to(db, 'd',
                   data.frame(AUC = 0.6, R2 = 0.2))

  sql <- to_sql(d, db)
  cat(sql)
  print(DBI::dbGetQuery(db, "SELECT * FROM d"))
  DBI::dbDisconnect(db)
}

WinVector/rquery documentation built on Aug. 24, 2023, 11:12 a.m.