Nothing
Code
d_m <- modify(d, m, copy = FALSE)
Warning <simpleWarning>
The following rule(s) are not working on the db:
- M2: if (y > 2) x <- 2
--------------------------------------------------------------
use 'is_working_db' with sql_warn=TRUE for more information
--------------------------------------------------------------
Error <Rcpp::exception>
no such column: y
Warning <simpleWarning>
Errors, so rolling back / undoing the modifications.
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