z[.RODBC_Excel: "[" method for reading all or part of a table in a MS Excel...

In easyrodbcexcel: Simple database interface for RODBC Excel.

Description

"[" method for reading all or part of a table in a MS Excel

database (referenced by 'edb'). Wrapper for

edbRead.RODBC_Excel.

Usage

## S3 method for class 'RODBC_Excel'
edb[tableName, sRow = NULL, sCol = NULL, sRowOp = c("AND", "OR")[1], formatCol = NULL, distinct = FALSE, verbose = FALSE, ...]

Arguments

edb	An object of class 'edb', such as returned by edb.
tableName	Single character string. Name of the table to read in 'edb'.
sRow	A list of named items. List of contrains/criterion to be applied on tableName to retrieve a subset of rows. Each item in rowC must be named after the columns on which the constrain apply. The (vector of) value(s) of each items are the possible values that can be retrieved. Values can be character or numeric. If NULL (the default), all values are returned.
sCol	A vector of character strings. Names of the columns to retrieve.
sRowOp	A single character string. Operator to be used to combine multiple constrains in sRow. Possible values are "OR" or "AND". Default value is "AND".
formatCol	If not NULL, a named list of functions to be applied to certain columns after the data has been extracted from the database. The name of each list item gives the column to process, and the value of each item gives the function that must be applied. For instance formatCol = list("DATE"=as.Date) will apply the function as.Date to the column "DATE".
distinct	Single logical. If TRUE, unique values in the result table will be returned, using the SELECT DISTINCT SQL statement. This is equivalent to applying unique to the data.frame returned by the function, except that the action is performed inside the database (not in R).
verbose	Single logical. If TRUE, information on what is done are output on screen.
...	Additional parameters to be passed to dbGetQuery.

Author(s)

Julien MOEYS <[e-mail]>

See Also

edb, edbRead.RODBC_Excel,

edbNames.RODBC_Excel,

edbColnames.RODBC_Excel.

easyrodbcexcel documentation built on May 2, 2019, 6:12 p.m.