Manipulate R Data Frames Using SQL R package sqldf version 0.4-12 CRAN Task View: Databases (https://CRAN.R-project.org/view=Databases) CRAN Task View: HighPerformanceComputing (https://CRAN.R-project.org/view=HighPerformanceComputing) The sqldf() function is typically passed a single argument which is an SQL select statement where the table names are ordinary R data frame names. sqldf() transparently sets up a database, imports the data frames into that database, performs the SQL select or other statement and returns the result using a heuristic to determine which class to assign to each column of the returned data frame. The sqldf() or read.csv.sql() functions can also be used to read filtered files into R even if the original files are larger than R itself can handle. 'RSQLite', 'RH2', 'RMySQL' and 'RPostgreSQL' backends are supported. Software Depends: R (>= 3.1.0), gsubfn (>= 0.6), proto, RSQLite Imports: DBI, chron Suggests: RH2, RMySQL, RPostgreSQL, svUnit, tcltk, MASS G. Grothendieck <ggrothendieck@gmail.com> Comprehensive R Archive Network (CRAN) G. Grothendieck [aut, cre] GPL-2 2026-01-30 application/tgz https://CRAN.R-project.org/package=sqldf doi:10.32614/CRAN.package.sqldf