default non-impementation.

Source: R/rquery_fns.R

Throw on error if this method is called, signalling that a specific data.table implemetation is needed for this method.

# S3 method for default
ex_data_table_step(
  optree,
  ...,
  tables = list(),
  source_usage = NULL,
  source_limit = NULL,
  env = parent.frame()
)

Arguments

optree

relop operations tree.
...

not used, force later arguments to bind by name.
tables

named list map from table names used in nodes to data.tables and data.frames.
source_usage

list mapping source table names to vectors of columns used.
source_limit

if not null limit all table sources to no more than this many rows (used for debugging).
env

environment to work in.