gmJoinAVariable

Creating the join R representation of a SQL JOIN

Queries the variable types of the variables, which shall be joined, and creates the R presentation of an SQL JOIN.

Keywords
utilities
Usage
gmJoinAVariable(sel,var,nameUse=var,bind=TRUE,db=getOption("gmDB"),selID=attr(sel,"id")) gmJoinADollarExpr(sel,expr,nameUse,envir,bind=TRUE,db=getOption("gmDB"), gmNameVarID=getGmNameVarID(db))
Arguments
sel
The selection statement in R representation.
var
R expression of an SQL query.
nameUse
the names used for the variables
envir
defines the environment used for evaluation of expr
bind
should the variable be bound
db
The database connection to the material analysis database.
selID
The ID attribute of the selection.
expr
An R expression.
gmNameVarID
The gmVarID of gmName from the database.
Details

Internals functions for constructing a SQL statement.

Value

For gmJoinADollarExpression the new selection expression, where the dollar expression is added.

Aliases
  • gmJoinAVariable
  • gmJoinADollarExpr
Documentation reproduced from package gmDatabase, version 0.5.0, License: GPL (>= 2) | LGPL (>= 2)

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