fix(api): remove nested select alias for oracledb

packages/nocodb/src/lib/db/sql-data-mapper/lib/sql/BaseModelSqlv2.ts

@@ -1742,6 +1742,10 @@ class BaseModelSqlv2 {
     return this.clientType === 'pg';
   }
 
+  get isOracle() {
+    return this.clientType === 'oracledb';
+  }
+
   get isMySQL() {
     return this.clientType === 'mysql2' || this.clientType === 'mysql';
   }
@@ -2854,7 +2858,9 @@ class BaseModelSqlv2 {
         ? (await this.dbDriver.raw(query))?.rows
         : query.slice(0, 6) === 'select' && !this.isMssql
         ? await this.dbDriver.from(
-            this.dbDriver.raw(query).wrap('(', ') __nc_alias')
+          this.dbDriver
+            .raw(query)
+            .wrap('(', this.isOracle ? ')' : ') __nc_alias')
           )
         : await this.dbDriver.raw(query),
       childTable