Disable in-process queued scalar-UDF execution — rducks_disable

Switches a Rducks-enabled DuckDB connection back to the direct serial backend. Optionally updates DuckDB thread settings at the same time.

Usage

rducks_disable_inproc(con, threads = NULL, external_threads = NULL)

Arguments

con: A duckdb_connection.
threads: Optional positive integer to set with PRAGMA threads.
external_threads: Optional positive integer to set with SET external_threads. Use NULL to leave unchanged.

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/Rtmp7iTOSm/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_enable_inproc(db)
rducks_disable_inproc(db)
rducks_release(db)
DBI::dbDisconnect(db)
# }