Load: Functions to link to flat database
In biostatUniBS/RDataXMan: Data Extraction Management

Description Usage Arguments Details Functions

Functions to link to flat database

1	access_flat(database, table_name, data.type)

`database`	Name of database. Should be either `private` or `public` for flat tables, indicating whether data is stored in `public_data` or `research/[research folder]/private_data`, or the actual name of database if extracting data from a database.
`table_name`	The name of dataset. File extension must be included if the data is saved as a flat file instead of in a database, e.g. 'data.csv' should be given instead of simply 'data'.
`data.type`	`flat` for flat tables and `sql` fo MySQL database.

Request forms are read in with xlsx::read.xlsx, which reads in ICD codes as charactor. Functions to read in data should read ICD codes as character as well in optimal cases.

Cannot use data.table::fread because it does not work with R version 3.2.0.

xlsx::read.xlsx will also read ICD code as character. So if haven::read_dta and haven::read_sav reads ICD as numeric, then we cannot do anything about it. (In simulated data it is still character)