revert: varchar -> boolean, varchar -> bigint

there is a bug when query in extended mode, the format may be binary, but we always output in text.

Signed-off-by: Runji Wang <[email protected]>

src/frontend/src/handler/cancel_job.rs

@@ -34,7 +34,7 @@ pub(super) async fn handle_cancel(
         .await?;
     let rows = canceled_jobs
         .into_iter()
-        .map(|id| CancelRow { id: id as i32 });
+        .map(|id| CancelRow { id: id.to_string() });
     Ok(PgResponse::builder(StatementType::CANCEL_COMMAND)
         .rows(rows)
         .into())
@@ -43,5 +43,5 @@ pub(super) async fn handle_cancel(
 #[derive(Fields)]
 #[fields(style = "Title Case")]
 struct CancelRow {
-    id: i32,
+    id: String,
 }

src/frontend/src/handler/show.rs

@@ -117,7 +117,7 @@ struct ShowObjectRow {
 pub struct ShowColumnRow {
     pub name: String,
     pub r#type: String,
-    pub is_hidden: Option<bool>,
+    pub is_hidden: Option<String>,
     pub description: Option<String>,
 }
 
@@ -135,7 +135,7 @@ impl ShowColumnRow {
                 ShowColumnRow {
                     name: c.name,
                     r#type: type_name,
-                    is_hidden: Some(col.is_hidden),
+                    is_hidden: Some(col.is_hidden.to_string()),
                     description: c.description,
                 }
             })