Generic SQL Helper Functions for 'TSdbi' SQL Plugins
Description
Standard SQL query functions used by
SQL plugins packages for the 'TSdbi' interface to time series databases.
It will mainly be used by other packages rather than directly by end
users. The one exception is the function 'TSquery' which can be used to
construct a time series from a database containing observations over
time (e.g. balance statements for multiple years), but where the database
is not specifically designed to store time series (as with other
'TSdbi' SQL plugin packages).
Comprehensive examples of all the 'TS*' packages is provided in the
vignette Guide.pdf with the 'TSdata' package.