Description Usage Arguments Details Value Author(s)
Queries the variable types of the variables, which shall be joined, and creates the R presentation of an SQL JOIN.
1 2 3 | 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))
|
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 |
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. |
Internals functions for constructing a SQL statement.
For gmJoinADollarExpression
the new selection expression, where the dollar expression is added.
K. Gerald van den Boogaart, S. Matos Camacho
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