getMatchingColumns: Filter columns by pattern.

In teradata-aster-field/toaster: Big Data in-Database Analytics that Scales with Teradata Aster Distributed Platform

Description

Selects columns with names matching regular expression pattern.

Usage

getMatchingColumns(pattern, channel, tableName, tableInfo, names.only = TRUE,
  ignore.case = TRUE, invert = FALSE)

Arguments

pattern	character string containing a regular expression to be matched in the given table info.
channel	connection object as returned by odbcConnect. Only used in combination with tableName.
tableName	Aster table name to use. If missing then tableInfo will be used instead.
tableInfo	data frame obtained by calling getTableSummary or sqlColumns.
names.only	logical: if TRUE returns column names only, otherwise full rows of tableInfo.
ignore.case	if TRUE case is ignored during matching, otherwise matching is case sensitive.
invert	logical. if TRUE return columns that do not match.

See Also

grep, getTableSummary

teradata-aster-field/toaster documentation built on May 31, 2019, 8:36 a.m.