Use rowid as tag for 'write's return value

c_src/sqlite3_drv.c

@@ -82,7 +82,7 @@ static ErlDrvData start(ErlDrvPort port, char* cmd) {
   retval->atom_columns = driver_mk_atom("columns");
   retval->atom_rows = driver_mk_atom("rows");
   retval->atom_null = driver_mk_atom("null");
-  retval->atom_id = driver_mk_atom("id");
+  retval->atom_rowid = driver_mk_atom("rowid");
   retval->atom_ok = driver_mk_atom("ok");
   retval->atom_unknown_cmd = driver_mk_atom("unknown_command");
 
@@ -587,7 +587,7 @@ static void sql_exec_async(void *_async_command) {
       dataset = realloc(dataset, sizeof(*dataset) * term_allocated);
     }
     dataset[term_count - 6] = ERL_DRV_ATOM;
-    dataset[term_count - 5] = drv->atom_id;
+    dataset[term_count - 5] = drv->atom_rowid;
     dataset[term_count - 4] = ERL_DRV_INT;
     dataset[term_count - 3] = rowid;
     dataset[term_count - 2] = ERL_DRV_TUPLE;

c_src/sqlite3_drv.h

@@ -41,7 +41,7 @@ typedef struct sqlite3_drv_t {
   ErlDrvTermData atom_columns;
   ErlDrvTermData atom_rows;
   ErlDrvTermData atom_null;
-  ErlDrvTermData atom_id;
+  ErlDrvTermData atom_rowid;
   ErlDrvTermData atom_ok;
   ErlDrvTermData atom_unknown_cmd;
 } sqlite3_drv_t;

test/sqlite3_test.erl

@@ -72,10 +72,10 @@ basic_functionality() ->
         TableInfo, 
         sqlite3:table_info(ct, user)),
     ?assertEqual(
-        {id, 1}, 
+        {rowid, 1}, 
         sqlite3:write(ct, user, [{name, "abby"}, {age, 20}, {wage, 2000}])),
     ?assertEqual(
-        {id, 2}, 
+        {rowid, 2}, 
         sqlite3:write(ct, user, [{name, "marge"}, {age, 30}, {wage, 2000}])),
     ?assertEqual(
         {error, "constraint failed"},