docs: private StmtTableScan resolveStmtTableScanByAlias(String tableAlias) {
          StmtTableScan tableScan = getStmtTableScanByAlias(tableAlias);
          if (tableScan != null) {
              return tableScan;
          }
          if (m_parentStmt != null) {
              // This may be a correlated subquery
              return m_parentStmt.resolveStmtTableScanByAlias(tableAlias);
          }
          return null;
      }