From 3d7451e7fc2d6b494e31b4046b8fc33e060d5012 Mon Sep 17 00:00:00 2001
From: Austin Drenski <austin.drenski@gmail.com>
Date: Sun, 29 Jul 2018 15:49:34 -0400
Subject: [PATCH] Add type-casts for SQL literals in list mapping

---
 .../Storage/Internal/Mapping/NpgsqlListTypeMapping.cs  | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/EFCore.PG/Storage/Internal/Mapping/NpgsqlListTypeMapping.cs b/src/EFCore.PG/Storage/Internal/Mapping/NpgsqlListTypeMapping.cs
index 49d6741c8..a3666015f 100644
--- a/src/EFCore.PG/Storage/Internal/Mapping/NpgsqlListTypeMapping.cs
+++ b/src/EFCore.PG/Storage/Internal/Mapping/NpgsqlListTypeMapping.cs
@@ -88,7 +88,9 @@ protected override string GenerateNonNullSqlLiteral(object value)
                 sb.Append(ElementMapping.GenerateSqlLiteral(list[i]));
             }
 
-            sb.Append(']');
+            sb.Append("]::");
+            sb.Append(ElementMapping.StoreType);
+            sb.Append("[]");
             return sb.ToString();
         }
 
@@ -143,7 +145,7 @@ static bool Compare(List<TElem> a, List<TElem> b, ValueComparer<TElem> elementCo
 
             static List<TElem> Snapshot(List<TElem> source, ValueComparer<TElem> elementComparer)
             {
-                if (source is null)
+                if (source == null)
                     return null;
 
                 var snapshot = new List<TElem>(source.Count);
@@ -194,7 +196,7 @@ static bool Compare(List<TElem> a, List<TElem> b)
 
             static List<TElem> DoSnapshot(List<TElem> source)
             {
-                if (source is null)
+                if (source == null)
                     return null;
 
                 var snapshot = new List<TElem>(source.Count);
@@ -243,7 +245,7 @@ static bool Compare(List<TElem> a, List<TElem> b)
 
             static List<TElem> DoSnapshot(List<TElem> source)
             {
-                if (source is null)
+                if (source == null)
                     return null;
 
                 var snapshot = new List<TElem>(source.Count);