diff --git a/query.go b/query.go
index fe24f11..770b91a 100644
--- a/query.go
+++ b/query.go
@@ -172,6 +172,10 @@ func type2readerFunc(t string) string {
 		t = "float"
 	}
 
+	if t == "jsonb" {
+		t = "string"
+	}
+
 	return sdk.ToLowerCamelCase(strings.Replace(t, " option", "OrNone", 1))
 }
 
diff --git a/result.go b/result.go
index 6abf2a7..d11ec80 100644
--- a/result.go
+++ b/result.go
@@ -33,7 +33,7 @@ func buildStructs(req *plugin.CodeGenRequest) []Struct {
 			for _, column := range table.Columns {
 				s.Fields = append(s.Fields, Field{
 					Name:    FieldName(column.Name, req.Settings),
-					Type:    jsonb2Str(fsType(req, column)),
+					Type:    fsType(req, column),
 					Comment: column.Comment,
 				})
 			}
@@ -83,7 +83,7 @@ func buildQueries(req *plugin.CodeGenRequest, structs []Struct) ([]Query, error)
 			p := query.Params[0]
 			gq.Arg = QueryValue{
 				Name: paramName(p),
-				Typ:  jsonb2Str(fsType(req, p.Column)),
+				Typ:  fsType(req, p.Column),
 			}
 		} else if len(query.Params) > 1 {
 			var cols []column
@@ -128,7 +128,7 @@ func buildQueries(req *plugin.CodeGenRequest, structs []Struct) ([]Query, error)
 			}
 			gq.Ret = QueryValue{
 				Name: name,
-				Typ:  jsonb2Str(fsType(req, c)),
+				Typ:  fsType(req, c),
 			}
 		} else if len(query.Columns) > 1 {
 			var gs *Struct
@@ -142,7 +142,7 @@ func buildQueries(req *plugin.CodeGenRequest, structs []Struct) ([]Query, error)
 				for i, f := range s.Fields {
 					c := query.Columns[i]
 					sameName := f.Name == columnName(c, i)
-					sameType := f.Type == jsonb2Str(fsType(req, c))
+					sameType := f.Type == fsType(req, c)
 					sameTable := sdk.SameTableName(c.Table, &s.Table, req.Catalog.DefaultSchema)
 					if !sameName || !sameType || !sameTable {
 						same = false
diff --git a/templates/model.tmpl b/templates/model.tmpl
index abbff03..f69df7e 100644
--- a/templates/model.tmpl
+++ b/templates/model.tmpl
@@ -13,7 +13,7 @@ open System
 {{- end -}}
 type {{.Name}} = {{ "{" }}
 {{range .Fields -}}
-{{"    "}} {{.Name | pascalCase }}: {{.Type}}  {{- if .Comment -}} // {{.Comment}} {{- end }}
+{{"    "}} {{.Name | pascalCase }}: {{.Type | json2str }}  {{- if .Comment -}} // {{.Comment}} {{- end }}
 {{end -}}
 {{ "}\n" }}
 {{end}}
diff --git a/templates/query.tmpl b/templates/query.tmpl
index 633e06f..d5bc7ff 100644
--- a/templates/query.tmpl
+++ b/templates/query.tmpl
@@ -30,7 +30,7 @@ type {{.Arg.Type}} = { {{- range .Arg.UniqueFields}}
 
 {{if .Ret.EmitStruct}}
 type {{.Ret.Type}} = { {{- range .Ret.Struct.Fields}}
-  {{.Name | pascalCase }}: {{.Type}};
+  {{.Name | pascalCase }}: {{.Type | json2str }};
   {{- end}}
 }
 {{- end -}}
diff --git a/testdata/gen/chat_snapshot.sql.fs b/testdata/gen/chat_snapshot.sql.fs
index 2cf1bfc..4749ed7 100644
--- a/testdata/gen/chat_snapshot.sql.fs
+++ b/testdata/gen/chat_snapshot.sql.fs
@@ -105,7 +105,7 @@ type ChatSnapshotMetaByUserIDRow = {
   Uuid: string;
   Title: string;
   Summary: string;
-  Tags: jsonb;
+  Tags: string;
   CreatedAt: DateTime;
 }
 
@@ -115,7 +115,7 @@ let ChatSnapshotMetaByUserID (db: NpgsqlConnection)  (userId: int32) =
     Uuid = read.string "uuid"
     Title = read.string "title"
     Summary = read.string "summary"
-    Tags = read.jsonb "tags"
+    Tags = read.string "tags"
     CreatedAt = read.dateTime "created_at"}
   db 
   |> Sql.existingConnection
diff --git a/testdata/gen/model.json b/testdata/gen/model.json
index b2d42b7..5084195 100644
--- a/testdata/gen/model.json
+++ b/testdata/gen/model.json
@@ -1 +1 @@
-[{"Table":{"schema":"public","name":"auth_user"},"Name":"AuthUser","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"password","DBName":"","Type":"string","Comment":""},{"Name":"last_login","DBName":"","Type":"DateTime","Comment":""},{"Name":"is_superuser","DBName":"","Type":"bool","Comment":""},{"Name":"username","DBName":"","Type":"string","Comment":""},{"Name":"first_name","DBName":"","Type":"string","Comment":""},{"Name":"last_name","DBName":"","Type":"string","Comment":""},{"Name":"email","DBName":"","Type":"string","Comment":""},{"Name":"is_staff","DBName":"","Type":"bool","Comment":""},{"Name":"is_active","DBName":"","Type":"bool","Comment":""},{"Name":"date_joined","DBName":"","Type":"DateTime","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"auth_user_management"},"Name":"AuthUserManagement","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"rate_limit","DBName":"","Type":"int32","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"authors"},"Name":"Author","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"name","DBName":"","Type":"string","Comment":""},{"Name":"bio","DBName":"","Type":"string option","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_logs"},"Name":"ChatLog","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"session","DBName":"","Type":"string","Comment":""},{"Name":"question","DBName":"","Type":"string","Comment":""},{"Name":"answer","DBName":"","Type":"string","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_message"},"Name":"ChatMessage","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"uuid","DBName":"","Type":"string","Comment":""},{"Name":"chat_session_uuid","DBName":"","Type":"string","Comment":""},{"Name":"role","DBName":"","Type":"string","Comment":""},{"Name":"content","DBName":"","Type":"string","Comment":""},{"Name":"score","DBName":"","Type":"float","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"created_by","DBName":"","Type":"int32","Comment":""},{"Name":"updated_by","DBName":"","Type":"int32","Comment":""},{"Name":"is_deleted","DBName":"","Type":"bool","Comment":""},{"Name":"is_pin","DBName":"","Type":"bool","Comment":""},{"Name":"token_count","DBName":"","Type":"int32","Comment":""},{"Name":"raw","DBName":"","Type":"string","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_model"},"Name":"ChatModel","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"name","DBName":"","Type":"string","Comment":""},{"Name":"label","DBName":"","Type":"string","Comment":""},{"Name":"is_default","DBName":"","Type":"bool","Comment":""},{"Name":"url","DBName":"","Type":"string","Comment":""},{"Name":"api_auth_header","DBName":"","Type":"string","Comment":""},{"Name":"api_auth_key","DBName":"","Type":"string","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"enable_per_mode_ratelimit","DBName":"","Type":"bool","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_prompt"},"Name":"ChatPrompt","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"uuid","DBName":"","Type":"string","Comment":""},{"Name":"chat_session_uuid","DBName":"","Type":"string","Comment":""},{"Name":"role","DBName":"","Type":"string","Comment":""},{"Name":"content","DBName":"","Type":"string","Comment":""},{"Name":"score","DBName":"","Type":"float","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"created_by","DBName":"","Type":"int32","Comment":""},{"Name":"updated_by","DBName":"","Type":"int32","Comment":""},{"Name":"is_deleted","DBName":"","Type":"bool","Comment":""},{"Name":"token_count","DBName":"","Type":"int32","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_session"},"Name":"ChatSession","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"uuid","DBName":"","Type":"string","Comment":""},{"Name":"topic","DBName":"","Type":"string","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"active","DBName":"","Type":"bool","Comment":""},{"Name":"model","DBName":"","Type":"string","Comment":""},{"Name":"max_length","DBName":"","Type":"int32","Comment":""},{"Name":"temperature","DBName":"","Type":"float","Comment":""},{"Name":"top_p","DBName":"","Type":"float","Comment":""},{"Name":"max_tokens","DBName":"","Type":"int32","Comment":""},{"Name":"n","DBName":"","Type":"int32","Comment":""},{"Name":"debug","DBName":"","Type":"bool","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_snapshot"},"Name":"ChatSnapshot","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"uuid","DBName":"","Type":"string","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"title","DBName":"","Type":"string","Comment":""},{"Name":"summary","DBName":"","Type":"string","Comment":""},{"Name":"model","DBName":"","Type":"string","Comment":""},{"Name":"tags","DBName":"","Type":"string","Comment":""},{"Name":"session","DBName":"","Type":"string","Comment":""},{"Name":"conversation","DBName":"","Type":"string","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"text","DBName":"","Type":"string","Comment":""},{"Name":"search_vector","DBName":"","Type":"string option","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"jwt_secrets"},"Name":"JwtSecret","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"name","DBName":"","Type":"string","Comment":""},{"Name":"secret","DBName":"","Type":"string","Comment":""},{"Name":"audience","DBName":"","Type":"string","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"user_active_chat_session"},"Name":"UserActiveChatSession","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"chat_session_uuid","DBName":"","Type":"string","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"user_chat_model_privilege"},"Name":"UserChatModelPrivilege","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"chat_model_id","DBName":"","Type":"int32","Comment":""},{"Name":"rate_limit","DBName":"","Type":"int32","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"created_by","DBName":"","Type":"int32","Comment":""},{"Name":"updated_by","DBName":"","Type":"int32","Comment":""}],"Comment":""}]
\ No newline at end of file
+[{"Table":{"schema":"public","name":"auth_user"},"Name":"AuthUser","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"password","DBName":"","Type":"string","Comment":""},{"Name":"last_login","DBName":"","Type":"DateTime","Comment":""},{"Name":"is_superuser","DBName":"","Type":"bool","Comment":""},{"Name":"username","DBName":"","Type":"string","Comment":""},{"Name":"first_name","DBName":"","Type":"string","Comment":""},{"Name":"last_name","DBName":"","Type":"string","Comment":""},{"Name":"email","DBName":"","Type":"string","Comment":""},{"Name":"is_staff","DBName":"","Type":"bool","Comment":""},{"Name":"is_active","DBName":"","Type":"bool","Comment":""},{"Name":"date_joined","DBName":"","Type":"DateTime","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"auth_user_management"},"Name":"AuthUserManagement","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"rate_limit","DBName":"","Type":"int32","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"authors"},"Name":"Author","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"name","DBName":"","Type":"string","Comment":""},{"Name":"bio","DBName":"","Type":"string option","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_logs"},"Name":"ChatLog","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"session","DBName":"","Type":"jsonb","Comment":""},{"Name":"question","DBName":"","Type":"jsonb","Comment":""},{"Name":"answer","DBName":"","Type":"jsonb","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_message"},"Name":"ChatMessage","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"uuid","DBName":"","Type":"string","Comment":""},{"Name":"chat_session_uuid","DBName":"","Type":"string","Comment":""},{"Name":"role","DBName":"","Type":"string","Comment":""},{"Name":"content","DBName":"","Type":"string","Comment":""},{"Name":"score","DBName":"","Type":"float","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"created_by","DBName":"","Type":"int32","Comment":""},{"Name":"updated_by","DBName":"","Type":"int32","Comment":""},{"Name":"is_deleted","DBName":"","Type":"bool","Comment":""},{"Name":"is_pin","DBName":"","Type":"bool","Comment":""},{"Name":"token_count","DBName":"","Type":"int32","Comment":""},{"Name":"raw","DBName":"","Type":"jsonb","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_model"},"Name":"ChatModel","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"name","DBName":"","Type":"string","Comment":""},{"Name":"label","DBName":"","Type":"string","Comment":""},{"Name":"is_default","DBName":"","Type":"bool","Comment":""},{"Name":"url","DBName":"","Type":"string","Comment":""},{"Name":"api_auth_header","DBName":"","Type":"string","Comment":""},{"Name":"api_auth_key","DBName":"","Type":"string","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"enable_per_mode_ratelimit","DBName":"","Type":"bool","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_prompt"},"Name":"ChatPrompt","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"uuid","DBName":"","Type":"string","Comment":""},{"Name":"chat_session_uuid","DBName":"","Type":"string","Comment":""},{"Name":"role","DBName":"","Type":"string","Comment":""},{"Name":"content","DBName":"","Type":"string","Comment":""},{"Name":"score","DBName":"","Type":"float","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"created_by","DBName":"","Type":"int32","Comment":""},{"Name":"updated_by","DBName":"","Type":"int32","Comment":""},{"Name":"is_deleted","DBName":"","Type":"bool","Comment":""},{"Name":"token_count","DBName":"","Type":"int32","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_session"},"Name":"ChatSession","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"uuid","DBName":"","Type":"string","Comment":""},{"Name":"topic","DBName":"","Type":"string","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"active","DBName":"","Type":"bool","Comment":""},{"Name":"model","DBName":"","Type":"string","Comment":""},{"Name":"max_length","DBName":"","Type":"int32","Comment":""},{"Name":"temperature","DBName":"","Type":"float","Comment":""},{"Name":"top_p","DBName":"","Type":"float","Comment":""},{"Name":"max_tokens","DBName":"","Type":"int32","Comment":""},{"Name":"n","DBName":"","Type":"int32","Comment":""},{"Name":"debug","DBName":"","Type":"bool","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"chat_snapshot"},"Name":"ChatSnapshot","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"uuid","DBName":"","Type":"string","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"title","DBName":"","Type":"string","Comment":""},{"Name":"summary","DBName":"","Type":"string","Comment":""},{"Name":"model","DBName":"","Type":"string","Comment":""},{"Name":"tags","DBName":"","Type":"jsonb","Comment":""},{"Name":"session","DBName":"","Type":"jsonb","Comment":""},{"Name":"conversation","DBName":"","Type":"jsonb","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"text","DBName":"","Type":"string","Comment":""},{"Name":"search_vector","DBName":"","Type":"string option","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"jwt_secrets"},"Name":"JwtSecret","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"name","DBName":"","Type":"string","Comment":""},{"Name":"secret","DBName":"","Type":"string","Comment":""},{"Name":"audience","DBName":"","Type":"string","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"user_active_chat_session"},"Name":"UserActiveChatSession","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"chat_session_uuid","DBName":"","Type":"string","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""}],"Comment":""},{"Table":{"schema":"public","name":"user_chat_model_privilege"},"Name":"UserChatModelPrivilege","Fields":[{"Name":"id","DBName":"","Type":"int32","Comment":""},{"Name":"user_id","DBName":"","Type":"int32","Comment":""},{"Name":"chat_model_id","DBName":"","Type":"int32","Comment":""},{"Name":"rate_limit","DBName":"","Type":"int32","Comment":""},{"Name":"created_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"updated_at","DBName":"","Type":"DateTime","Comment":""},{"Name":"created_by","DBName":"","Type":"int32","Comment":""},{"Name":"updated_by","DBName":"","Type":"int32","Comment":""}],"Comment":""}]
\ No newline at end of file