Enable Rducks on a DuckDB connection — rducks

Loads the bundled Rducks DuckDB extension. The registration-safe R UDF path requires R API work to happen on the recorded main R thread; pass threads = "single" to set external_threads=1 and PRAGMA threads=1 explicitly. Use rducks_set_execution_plan() before scalar-UDF registration to select direct serial or queued in-process execution.

Usage

rducks_enable(con, extension_path = NULL, threads = c("unchanged", "single"))

Arguments

con: A duckdb_connection.
extension_path: Optional explicit extension path. NULL selects the bundled artifact matching the exact engine version reported by con.
threads: Either "unchanged" or "single".

Value

con, invisibly.

Examples

# \donttest{
db <- duckdb::dbConnect(duckdb::duckdb(config = list(allow_unsigned_extensions = "true")))
#> duckdb keeps downloaded extensions and secrets in a temporary directory:
#> ℹ /tmp/RtmpHWria6/duckdb
#> This is removed when the R session ends.
#> • Extensions are re-downloaded each session.
#> • Secrets are lost.
#> ℹ Run duckdb(shared_home = TRUE) (or create ~/.duckdb) to keep them (suitable for most users).
#> ℹ Run duckdb(shared_home = FALSE) to accept the temporary directory (and silence this message).
#> ℹ See ?duckdb_storage for details and alternatives.
rducks_enable(db)
rducks_release(db)
DBI::dbDisconnect(db)
# }