* fix #48 (comment) and https://dba.stackexchange.com/questions/14629…

…4/why-does-postgresql-perform-a-seq-scan-when-comparing-a-numeric-value-with-a-big/339617#339617 by explicitly setting column type `bigint` for all entity fields which typed with `ulong` @ c#

c#/crawler/src/Db/Post/BasePost.cs

@@ -4,6 +4,7 @@ namespace tbm.Crawler.Db.Post;
 
 public abstract class BasePost : TimestampedEntity, ICloneable
 {
+    [Column(TypeName = "bigint")]
     public ulong Tid { get; set; }
     public long AuthorUid { get; set; }
     public uint? LastSeenAt { get; set; }

c#/crawler/src/Db/Post/PostContent/ReplyContent.cs

@@ -3,5 +3,6 @@ namespace tbm.Crawler.Db.Post.PostContent;
 
 public class ReplyContent : BasePostContent
 {
-    [Key] public ulong Pid { get; set; }
+    [Key] [Column(TypeName = "bigint")]
+    public ulong Pid { get; set; }
 }

c#/crawler/src/Db/Post/PostContent/SubReplyContent.cs

@@ -3,5 +3,6 @@ namespace tbm.Crawler.Db.Post.PostContent;
 
 public class SubReplyContent : BasePostContent
 {
-    [Key] public ulong Spid { get; set; }
+    [Key] [Column(TypeName = "bigint")]
+    public ulong Spid { get; set; }
 }

c#/crawler/src/Db/Post/ReplyPost.cs

@@ -3,7 +3,8 @@ namespace tbm.Crawler.Db.Post;
 
 public class ReplyPost : PostWithAuthorExpGrade
 {
-    [Key] public ulong Pid { get; set; }
+    [Key] [Column(TypeName = "bigint")]
+    public ulong Pid { get; set; }
     public uint Floor { get; set; }
     public required ReplyContent Content { get; set; }
 

c#/crawler/src/Db/Post/SubReplyPost.cs

@@ -3,8 +3,10 @@ namespace tbm.Crawler.Db.Post;
 
 public class SubReplyPost : PostWithAuthorExpGrade
 {
+    [Column(TypeName = "bigint")]
     public ulong Pid { get; set; }
-    [Key] public ulong Spid { get; set; }
+    [Key] [Column(TypeName = "bigint")]
+    public ulong Spid { get; set; }
     public required SubReplyContent Content { get; set; }
 
     [JsonConverter(typeof(ProtoBufRepeatedFieldJsonConverter<Content>))]

c#/crawler/src/Db/Post/ThreadMissingFirstReply.cs

@@ -3,7 +3,8 @@ namespace tbm.Crawler.Db.Post;
 
 public class ThreadMissingFirstReply : RowVersionedEntity
 {
-    [Key] public ulong Tid { get; set; }
+    [Key] [Column(TypeName = "bigint")]
+    public ulong Tid { get; set; }
     public ulong? Pid { get; set; }
     public byte[]? Excerpt { get; set; }
     public uint? LastSeenAt { get; set; }

c#/crawler/src/Db/Post/ThreadPost.cs

@@ -9,6 +9,7 @@ public class ThreadPost : BasePost
     [JsonConverter(typeof(ProtoBufRepeatedFieldJsonConverter<Abstract>))]
     [NotMapped]
     public RepeatedField<Abstract>? FirstReplyExcerpt { get; set; }
+    [Column(TypeName = "bigint")]
     public ulong ThreadType { get; set; }
     public string? StickyType { get; set; }
     public string? TopicType { get; set; }

c#/crawler/src/Db/Revision/Splitting/ReplyRevisions.cs

@@ -5,6 +5,7 @@ namespace tbm.Crawler.Db.Revision.Splitting;
 
 public abstract class BaseReplyRevision : RevisionWithSplitting<BaseReplyRevision>
 {
+    [Column(TypeName = "bigint")]
     public ulong Pid { get; set; }
 }
 

c#/crawler/src/Db/Revision/Splitting/SubReplyRevisions.cs

@@ -5,6 +5,7 @@ namespace tbm.Crawler.Db.Revision.Splitting;
 
 public abstract class BaseSubReplyRevision : RevisionWithSplitting<BaseSubReplyRevision>
 {
+    [Column(TypeName = "bigint")]
     public ulong Spid { get; set; }
 }
 

c#/crawler/src/Db/Revision/Splitting/ThreadRevisions.cs

@@ -5,6 +5,7 @@ namespace tbm.Crawler.Db.Revision.Splitting;
 
 public abstract class BaseThreadRevision : RevisionWithSplitting<BaseThreadRevision>
 {
+    [Column(TypeName = "bigint")]
     public ulong Tid { get; set; }
 }
 

c#/shared/src/Db/ReplyContentImage.cs

@@ -1,8 +1,11 @@
 // ReSharper disable PropertyCanBeMadeInitOnly.Global
+using System.ComponentModel.DataAnnotations.Schema;
+
 namespace tbm.Shared.Db;
 
 public class ReplyContentImage : EntityWithImageId
 {
+    [Column(TypeName = "bigint")]
     public ulong Pid { get; set; }
     public required ImageInReply ImageInReply { get; set; }
 }