摘要： create or replacefunction CONCAT_COL (input varchar2) return varchar2 parallel_enable aggregate using CONCAT_COL_IMPL;create or replacetype CONCAT_COL_IMPL as object( CATVALS varchar2(4000), static function ODCIAggregateInitialize(sctx in out CONCAT_COL_IMPL) return number, member function ODCIAggre 阅读全文