liurenjie1024 commented on code in PR #534:
URL: https://github.com/apache/iceberg-rust/pull/534#discussion_r1731193964


##########
crates/catalog/sql/src/catalog.rs:
##########
@@ -141,21 +142,30 @@ impl SqlCatalog {
     }
 
     /// SQLX Any does not implement PostgresSQL bindings, so we have to do 
this.
-    pub async fn execute_statement(
-        &self,
-        query: &String,
-        args: Vec<Option<&String>>,
-    ) -> Result<Vec<AnyRow>> {
-        let query_with_placeholders: Cow<str> =
-            if self.sql_bind_style == SqlBindStyle::DollarNumeric {
-                let mut query = query.clone();
-                for i in 0..args.len() {
-                    query = query.replacen("?", &format!("${}", i + 1), 1);
-                }
-                Cow::Owned(query)
-            } else {
-                Cow::Borrowed(query)
-            };
+    fn replace_placeholders(&self, query: &str) -> String {
+        match self.sql_bind_style {

Review Comment:
   I think it's kind of weird to ask user to pass this as this may lead to 
unclear error. I think this may be not a blocker issue, but at least please add 
some comments to help user to understand it.



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