fix(oracle): reload large values through rowid-wrapped select

Refs: #7082

crates/dbx-core/src/sql_dialect/table_select.rs

@@ -276,7 +276,21 @@ pub fn build_table_data_select_sql_with_database(
         if options.columns.is_empty() {
             "*".to_string()
         } else {
-            format!("\"{DBX_ROWID_COLUMN}\", {rownum_select_columns}")
+            // Callers that address rows by the synthetic key may list it among
+            // the requested columns; the leading projection already supplies
+            // it from the inline view, so drop the duplicate.
+            let rest = options
+                .columns
+                .iter()
+                .filter(|column| !column.eq_ignore_ascii_case(DBX_ROWID_COLUMN))
+                .map(|column| quote_table_identifier(database_type, column))
+                .collect::<Vec<_>>()
+                .join(", ");
+            if rest.is_empty() {
+                format!("\"{DBX_ROWID_COLUMN}\"")
+            } else {
+                format!("\"{DBX_ROWID_COLUMN}\", {rest}")
+            }
         }
     } else {
         rownum_select_columns.clone()

crates/dbx-core/src/sql_dialect/tests.rs

@@ -1333,6 +1333,31 @@ fn builds_oracle_and_neo4j_table_data_queries() {
         );
 }
 
+#[test]
+fn builds_oracle_rowid_wrapped_large_value_reload_sql() {
+    // The data-grid large-value reload selects the synthetic rowid key plus the
+    // target column with a rowid equality filter; `__DBX_ROWID` exists only as
+    // the inline-view alias, never as a base-table column (ORA-00904).
+    assert_eq!(
+        build_table_data_select_sql(TableDataSelectSqlOptions {
+            database_type: Some(DatabaseType::Oracle),
+            schema: Some("APP".to_string()),
+            table_name: "T_TEST".to_string(),
+            table_type: Some("TABLE".to_string()),
+            primary_keys: vec![DBX_ROWID_COLUMN.to_string()],
+            columns: vec![DBX_ROWID_COLUMN.to_string(), "ELM_CONTENT".to_string()],
+            where_input: Some("ROWIDTOCHAR(ROWID) = 'AAAFd1AAFAAAABSAA/'".to_string()),
+            fallback_order_columns: Vec::new(),
+            order_by: None,
+            limit: Some(1),
+            offset: Some(0),
+            include_row_id: true,
+            ..Default::default()
+        }),
+        "SELECT \"__DBX_ROWID\", \"ELM_CONTENT\" FROM (SELECT ROWIDTOCHAR(t.ROWID) AS \"__DBX_ROWID\", t.* FROM \"APP\".\"T_TEST\" t WHERE (ROWIDTOCHAR(ROWID) = 'AAAFd1AAFAAAABSAA/')) WHERE ROWNUM <= 1"
+    );
+}
+
 #[test]
 fn oracle_view_first_page_preserves_filter_and_sort_without_rownum() {
     assert_eq!(