Make the "Version" column case insensitive (loic-sharma#466)

BaGet is case sensitive on versions, which prevents unlisting/deleting a package that has uppercased letters in its version string (see loic-sharma#458). This only affects the SQLite and PostgreSQL drivers.

Author: loic-sharma

src/BaGet.Database.PostgreSql/BaGet.Database.PostgreSql.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="3.1.0" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="3.1.1.2" />
   </ItemGroup>
 
   <ItemGroup>

src/BaGet.Database.PostgreSql/Migrations/20200208053115_FixVersionCaseSensitivity.Designer.cs

@@ -0,0 +1,99 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+namespace BaGet.Database.PostgreSql.Migrations
+{
+    public partial class FixVersionCaseSensitivity : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            // Make the "version" column case insensitive.
+            migrationBuilder.AlterColumn<string>(
+                name: "Version",
+                table: "Packages",
+                type: "citext",
+                maxLength: 64,
+                nullable: false,
+                oldClrType: typeof(string),
+                oldMaxLength: 64);
+
+            // Npgsql 3.0 migration
+            // See: http://www.npgsql.org/efcore/release-notes/3.0.html#default-value-generation-strategy-is-now-identity
+            migrationBuilder.AlterColumn<int>(
+                name: "Key",
+                table: "TargetFrameworks",
+                nullable: false,
+                oldClrType: typeof(int))
+                .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn)
+                .OldAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.SerialColumn);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "Key",
+                table: "PackageTypes",
+                nullable: false,
+                oldClrType: typeof(int))
+                .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn)
+                .OldAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.SerialColumn);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "Key",
+                table: "Packages",
+                nullable: false,
+                oldClrType: typeof(int))
+                .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn)
+                .OldAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.SerialColumn);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "Key",
+                table: "PackageDependencies",
+                nullable: false,
+                oldClrType: typeof(int))
+                .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn)
+                .OldAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.SerialColumn);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "Version",
+                table: "Packages",
+                maxLength: 64,
+                nullable: false,
+                oldClrType: typeof(string),
+                oldType: "citext",
+                oldMaxLength: 64);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "Key",
+                table: "TargetFrameworks",
+                nullable: false,
+                oldClrType: typeof(int))
+                .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.SerialColumn)
+                .OldAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "Key",
+                table: "PackageTypes",
+                nullable: false,
+                oldClrType: typeof(int))
+                .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.SerialColumn)
+                .OldAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "Key",
+                table: "Packages",
+                nullable: false,
+                oldClrType: typeof(int))
+                .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.SerialColumn)
+                .OldAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "Key",
+                table: "PackageDependencies",
+                nullable: false,
+                oldClrType: typeof(int))
+                .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.SerialColumn)
+                .OldAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
+        }
+    }
+}