Use proper range increment for values list (#641)

Author: greg-rychlewski

lib/ecto/adapters/myxql/connection.ex

@@ -881,7 +881,7 @@ if Code.ensure_loaded?(MyXQL) do
     end
 
     defp values_list(types, num_rows, query) do
-      rows = Enum.to_list(1..num_rows)
+      rows = :lists.seq(1, num_rows, 1)
 
       [
         "VALUES ",

lib/ecto/adapters/postgres/connection.ex

@@ -1137,7 +1137,7 @@ if Code.ensure_loaded?(Postgrex) do
     end
 
     defp values_list(types, idx, num_rows) do
-      rows = Enum.to_list(1..num_rows)
+      rows = :lists.seq(1, num_rows, 1)
 
       [
         "VALUES ",

lib/ecto/adapters/tds/connection.ex

@@ -981,7 +981,7 @@ if Code.ensure_loaded?(Tds) do
     end
 
     defp values_list(types, idx, num_rows) do
-      rows = Enum.to_list(1..num_rows)
+      rows = :lists.seq(1, num_rows, 1)
 
       [
         "VALUES ",