diff --git a/allographer.nimble b/allographer.nimble
index c90754c4..15c590a5 100644
--- a/allographer.nimble
+++ b/allographer.nimble
@@ -1,6 +1,6 @@
 # Package
 
-version       = "0.12.3" # https://github.com/itsumura-h/nim-allographer/pull/85
+version       = "0.12.4" # https://github.com/itsumura-h/nim-allographer/pull/85
 author        = "Hidenobu Itsumura @dumblepytech1 as 'medy'"
 description   = "A Nim query builder library inspired by Laravel/PHP and Orator/Python"
 license       = "MIT"
diff --git a/example/run.nim b/example/run.nim
index f9c15edc..9b86c4b8 100644
--- a/example/run.nim
+++ b/example/run.nim
@@ -14,7 +14,6 @@ schema([
     Column().string("name").nullable(),
     Column().string("email").nullable(),
     Column().string("password").nullable(),
-    Column().string("salt").nullable(),
     Column().string("address").nullable(),
     Column().date("birth_date").nullable(),
     Column().foreign("auth_id").reference("id").on("auth").onDelete(SET_NULL)
@@ -42,7 +41,6 @@ for i in 1..total:
       "name": &"user{i}",
       "email": &"user{i}@gmail.com",
       "password": password,
-      "salt": salt,
       "auth_id": authId
     }
   )
@@ -51,7 +49,7 @@ pb.finish()
 
 RDB().table("users").insert(insertData)
 
-discard RDB().table("users").get()
+echo  RDB().table("users").get()
 
 echo RDB()
     .table("users")
@@ -123,7 +121,6 @@ type User = ref object
   name:string
   email:string
   password:string
-  salt:string
   address:string
   birth_date:string
   auth_id:int
diff --git a/src/allographer/query_builder/exec.nim b/src/allographer/query_builder/exec.nim
index 3a308f8d..b859b0c0 100644
--- a/src/allographer/query_builder/exec.nim
+++ b/src/allographer/query_builder/exec.nim
@@ -136,70 +136,75 @@ proc toJson(results:openArray[string], columns:openArray[JsonNode]):JsonNode =
 proc getAllRows(sqlString:string, args:varargs[string]): seq[JsonNode] =
   let db = db()
   defer: db.close()
-  let results = db.getAllRows(sql sqlString, args) # seq[seq[string]]
-  if results.len == 0:
-    echoErrorMsg(sqlString & $args)
-    return newSeq[JsonNode](0)
 
   var db_columns: DbColumns
-  for _ in db.instantRows(db_columns, sql sqlString, args):
-    discard
+  var rows = newSeq[seq[string]]()
+  for row in db.instantRows(db_columns, sql sqlString, args):
+    var columns = newSeq[string](row.len)
+    for i in 0..row.len()-1:
+      columns[i] = row[i]
+    rows.add(columns)
+
+  if rows.len == 0:
+    echoErrorMsg(sqlString & $args)
+    return newSeq[JsonNode](0)
 
   let columns = getColumns(db_columns)
-  return toJson(results, columns) # seq[JsonNode]
+  return toJson(rows, columns) # seq[JsonNode]
 
 proc getAllRows(db:DbConn, sqlString:string, args:varargs[string]): seq[JsonNode] =
   ## used in transaction
-  let results = db.getAllRows(sql sqlString, args) # seq[seq[string]]
-  if results.len == 0:
+  var db_columns: DbColumns
+  var rows = newSeq[seq[string]]()
+  for row in db.instantRows(db_columns, sql sqlString, args):
+    var columns = newSeq[string](row.len)
+    for i in 0..row.len()-1:
+      columns[i] = row[i]
+    rows.add(columns)
+
+  if rows.len == 0:
     echoErrorMsg(sqlString & $args)
     return newSeq[JsonNode](0)
 
-  var db_columns: DbColumns
-  for _ in db.instantRows(db_columns, sql sqlString, args):
-    discard
-
   let columns = getColumns(db_columns)
-  return toJson(results, columns) # seq[JsonNode]
+  return toJson(rows, columns) # seq[JsonNode]
 
 
 proc getRow(sqlString:string, args:varargs[string]): JsonNode =
   let db = db()
   defer: db.close()
-  # TODO fix when Nim is upgraded https://github.com/nim-lang/Nim/pull/12806
-  # let results = db.getRow(sql sqlString, args)
-  let r = db.getAllRows(sql sqlString, args)
-  var results: seq[string]
-  if r.len > 0:
-    results = r[0]
-  else:
-    echoErrorMsg(sqlString & $args)
-    return newJNull()
 
   var db_columns: DbColumns
-  for _ in db.instantRows(db_columns, sql sqlString, args):
-    discard
+  var rows = newSeq[seq[string]]()
+  for row in db.instantRows(db_columns, sql sqlString, args):
+    var columns = newSeq[string](row.len)
+    for i in 0..row.len()-1:
+      columns[i] = row[i]
+    rows.add(columns)
+
+  if rows.len == 0:
+    echoErrorMsg(sqlString & $args)
+    return newJNull()
 
   let columns = getColumns(db_columns)
-  return toJson(results, columns)
+  return toJson(rows, columns)[0]
 
 proc getRow(db:DbConn, sqlString:string, args:varargs[string]): JsonNode =
-  # TODO fix when Nim is upgraded https://github.com/nim-lang/Nim/pull/12806
-  # let results = db.getRow(sql sqlString, args)
-  let r = db.getAllRows(sql sqlString, args)
-  var results: seq[string]
-  if r.len > 0:
-    results = r[0]
-  else:
+  ## used in transaction
+  var db_columns: DbColumns
+  var rows = newSeq[seq[string]]()
+  for row in db.instantRows(db_columns, sql sqlString, args):
+    var columns = newSeq[string](row.len)
+    for i in 0..row.len()-1:
+      columns[i] = row[i]
+    rows.add(columns)
+
+  if rows.len == 0:
     echoErrorMsg(sqlString & $args)
     return newJNull()
 
-  var db_columns: DbColumns
-  for _ in db.instantRows(db_columns, sql sqlString, args):
-    discard
-
   let columns = getColumns(db_columns)
-  return toJson(results, columns)
+  return toJson(rows, columns)[0]
 
 proc orm(rows:openArray[JsonNode], typ:typedesc):seq[typ.type] =
   var response = newSeq[typ.type](rows.len)
diff --git a/tests/test_transaction.nim b/tests/test_transaction.nim
index a6a0e011..3155db8d 100644
--- a/tests/test_transaction.nim
+++ b/tests/test_transaction.nim
@@ -102,4 +102,4 @@ suite "transaction":
           %*{"name": "George", "birth_date": "1943-02-25", "address": "London"},
         ]
       )
-    echo RDB().table("users").where("id", ">", 10).get()
\ No newline at end of file
+    echo RDB().table("users").where("id", ">", 10).get()