create or replace TYPE zh_concat_im AUTHID CURRENT_USER AS OBJECT ( CURR_STR VARCHAR2(32767), STATIC FUNCTION ODCIAGGREGATEINITIALIZE(SCTX IN OUT zh_concat_im) RETURN NUMBER, MEMBER FUNCTION ODCIAGGREGATEITERATE(SELF IN OUT zh_concat_im, P1 IN VARCHAR2) RETURN NUMBER, MEMBER FUNCTION ODCIAGGREGATETERMINATE(SELF IN zh_concat_im, RETURNVALUE OUT VARCHAR2, FLAGS IN NUMBER) RETURN NUMBER, MEMBER FUNCTION ODCIAGGREGATEMERGE(SELF IN OUT zh_concat_im, SCTX2 IN zh_concat_im) RETURN NUMBER ); / create or replace TYPE BODY zh_concat_im IS STATIC FUNCTION ODCIAGGREGATEINITIALIZE(SCTX IN OUT zh_concat_im) RETURN NUMBER IS BEGIN SCTX := zh_concat_im(NULL) ; RETURN ODCICONST.SUCCESS; END; MEMBER FUNCTION ODCIAGGREGATEITERATE(SELF IN OUT zh_concat_im, P1 IN VARCHAR2) RETURN NUMBER IS BEGIN IF(CURR_STR IS NOT NULL) THEN CURR_STR := CURR_STR || ':' || P1; ELSE CURR_STR := P1; END IF; RETURN ODCICONST.SUCCESS; END; MEMBER FUNCTION ODCIAGGREGATETERMINATE(SELF IN zh_concat_im, RETURNVALUE OUT VARCHAR2, FLAGS IN NUMBER) RETURN NUMBER IS BEGIN RETURNVALUE := CURR_STR ; RETURN ODCICONST.SUCCESS; END; MEMBER FUNCTION ODCIAGGREGATEMERGE(SELF IN OUT zh_concat_im, SCTX2 IN zh_concat_im) RETURN NUMBER IS BEGIN IF(SCTX2.CURR_STR IS NOT NULL) THEN SELF.CURR_STR := SELF.CURR_STR || ':' || SCTX2.CURR_STR ; END IF; RETURN ODCICONST.SUCCESS; END; END; / 函数: create or replace FUNCTION zh_concat(P1 VARCHAR2) RETURN VARCHAR2 AGGREGATE USING zh_concat_im ;