This function first checks the data in the target table table_name
to ensure that rows in dat that exist in table_name (by
checking the primary key) are not added.
append_facile_table(dat, x, table_name, warn_existing = FALSE)
| dat | the |
|---|---|
| x | the |
| table_name | the name of the table in |
invisibly returns the conformed version of dat.