fix(oceanbase): use rowid for keyless Oracle rows

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

@@ -65,6 +65,10 @@ pub fn uses_fetch_first(database_type: DatabaseType) -> bool {
     matches!(database_type, DatabaseType::Oracle | DatabaseType::Dameng | DatabaseType::Db2)
 }
 
+pub fn uses_oracle_row_id(database_type: Option<DatabaseType>) -> bool {
+    matches!(database_type, Some(DatabaseType::Oracle | DatabaseType::OceanbaseOracle))
+}
+
 /// Oracle 系方言不支持 `INSERT ... VALUES (...), (...)` 多行语法，
 /// 复制为 INSERT 与导出 INSERT 都需按行生成单条语句。
 pub fn uses_single_row_insert_statements(database_type: DatabaseType) -> bool {

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

@@ -1,6 +1,8 @@
 use crate::models::connection::DatabaseType;
 
-use super::capabilities::{firebird_rows_clause, table_pagination_strategy, uses_fetch_first, TablePaginationStrategy};
+use super::capabilities::{
+    firebird_rows_clause, table_pagination_strategy, uses_oracle_row_id, TablePaginationStrategy,
+};
 use super::identifiers::{
     normalize_where_input, qualified_table_name, qualified_table_name_with_catalog, quote_table_identifier,
 };
@@ -50,7 +52,7 @@ pub fn build_table_data_select_sql(options: TableDataSelectSqlOptions) -> String
     // Oracle join views can raise ORA-01445 when ROWID is selected; keep the
     // synthetic ROWID fallback scoped to base-table reads.
     let include_oracle_row_id = options.include_row_id
-        && database_type == Some(DatabaseType::Oracle)
+        && uses_oracle_row_id(database_type)
         && !is_view_table_type(options.table_type.as_deref());
 
     let select_columns = if include_oracle_row_id {
@@ -72,8 +74,7 @@ pub fn build_table_data_select_sql(options: TableDataSelectSqlOptions) -> String
     } else {
         rownum_select_columns.clone()
     };
-    let table_alias =
-        if include_oracle_row_id && database_type.is_some_and(uses_fetch_first) { format!("{table} t") } else { table };
+    let table_alias = if include_oracle_row_id { format!("{table} t") } else { table };
 
     match table_pagination_strategy(database_type) {
         TablePaginationStrategy::IrisTop => {

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

@@ -784,6 +784,24 @@ fn builds_oracle_and_neo4j_table_data_queries() {
         }),
         "SELECT \"__DBX_ROWID\", \"ID\", \"NAME\" FROM (SELECT ROWIDTOCHAR(t.ROWID) AS \"__DBX_ROWID\", t.* FROM \"DBXTEST\".\"DBX_LOAD_TABLE_006\" t) WHERE ROWNUM <= 100"
     );
+    assert_eq!(
+        build_table_data_select_sql(TableDataSelectSqlOptions {
+            database_type: Some(DatabaseType::OceanbaseOracle),
+            schema: Some("APP".to_string()),
+            table_name: "DATA_REPORT_SUB_TASK".to_string(),
+            table_type: Some("TABLE".to_string()),
+            primary_keys: vec![DBX_ROWID_COLUMN.to_string()],
+            columns: vec!["ID".to_string(), "SMC_RESPONSE".to_string()],
+            fallback_order_columns: Vec::new(),
+            order_by: None,
+            limit: Some(100),
+            offset: None,
+            where_input: None,
+            include_row_id: true,
+            ..Default::default()
+        }),
+        "SELECT \"__DBX_ROWID\", \"ID\", \"SMC_RESPONSE\" FROM (SELECT ROWIDTOCHAR(t.ROWID) AS \"__DBX_ROWID\", t.* FROM \"APP\".\"DATA_REPORT_SUB_TASK\" t) WHERE ROWNUM <= 100"
+    );
     assert_eq!(
         build_table_data_select_sql(TableDataSelectSqlOptions {
             database_type: Some(DatabaseType::Oracle),