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mdbr 0.3.1

mdbr 0.3.0

• The mdbtools C library is now compiled and bundled with the package. No external mdbtools installation is required on any platform (#3).

• A full read-only DBI backend is now available via mdb() (#6):

  con <- DBI::dbConnect(mdb(), dbname = "path/to/file.mdb")
  DBI::dbListTables(con)
  DBI::dbGetQuery(con, "SELECT * FROM [Orders] LIMIT 10;")
  DBI::dbDisconnect(con)

• New helper functions: mdb_sql(), mdb_queries(), mdb_count(), mdb_json(), mdb_export(), mdb_ver(), mdb_array(), mdb_header(), mdb_hexdump(), and mdb_prop().

• mdb_schema() gains a mode argument for DDL output in multiple SQL dialects in addition to the existing readr col-spec mode.

• read_mdb() now reads tables via the bundled C library and returns a tibble. The col_types and ... arguments are deprecated with a lifecycle warning.

• readr is no longer a hard dependency. If you use read_mdb() and rely on readr being available, add it explicitly to your own dependencies.

• Thanks to Bruno Tremblay for contributing the bundled mdbtools source, the DBI backend, and the expanded helper functions (#9).

mdbr 0.2.1

• Update maintainer email, website URL, and GitHub URL.

mdbr 0.2.0

• Functions now quote their input files with shQuote(). (#7)
• export_mdb() now mirrors readr::format_csv() with arguments, etc.
• Remove all formatting arguments for read_mdb() (with smart hidden defaults).
• Add more schema types with readr equivalents.
• Write schema to a matrix in-memory rather than a temporary file.
• Always read data from a temporary file instead of stdout option.
• Add better checking if mdbtools is installed.

mdbr 0.1.1

• read_mdb() now has stdout() which can take TRUE or a file path.
• Examples and tests don’t run on CRAN.

mdbr 0.1.0

• Added a NEWS.md file to track changes to the package.
• Cover the most basic functions from mdbtools:
  • List tables in database
  • Export table as delimited file
  • Read delimited file as dataframe
  • Convert simple schema to readr spec

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.