rquery (version 0.2.0)

tables_used: Return vector of table names used.

Description

Return vector of table names used.

Usage

tables_used(node, ...)

Arguments

node

rquery tree to examine.

...

(not used)

Value

named map of tables used.

Examples

# NOT RUN {
my_db <- DBI::dbConnect(RSQLite::SQLite(), ":memory:")
d1 <- dbi_copy_to(my_db, 'd1',
                 data.frame(AUC = 0.6, R2 = 0.2))
d2 <- dbi_copy_to(my_db, 'd2',
                 data.frame(AUC = 0.6, D = 0.3))
eqn <- natural_join(d1, d2)
cat(format(eqn))
print(tables_used(eqn))
DBI::dbDisconnect(my_db)

# }