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.

Execute files of 'SQL' and manage database connections. 'SQL' statements and queries may be interpolated with string literals. Execution of individual statements and queries may be controlled with keywords. Multiple connections may be defined with 'YAML' and accessed by name.

Includes functions for interacting with common meta data fields, 
  writing insert statements, calling functions, and more for 'T-SQL' and 'Postgresql'.

sqliter helps users, mainly data munging practioneers, to organize
    their sql calls in a clean structure. It simplifies the process of
    extracting and transforming data into useful formats.

A tool for working with 'SQLite' databases. 'SQLite' has some idiosyncrasies and limitations that impose some hurdles to the R developer who is using this database as a repository. For instance, 'SQLite' doesn't have a date type and 'sqliteutils' has some functions to deal with that.

The nature of working with structured query language ('SQL') scripts 
             efficiently often requires the creation of temporary tables and there 
             are few clean and simple 'R' 'SQL' execution approaches that allow 
             you to complete this kind of work with the 'R' environment. This 
             package seeks to give 'SQL' implementations in 'R' a little love 
             by deploying functions that allow you to deploy complex 'SQL' 
             scripts within a typical 'R' workflow.