重构wm_concat,采用clob做为存储容器
重构wm_concat,采用clob做为存储容器
重构wm_concat,采用clob做为存储容器 --Type CREATE OR REPLACE TYPE zh_concat_im AUTHID CURRENT_USER AS OBJECT ( CURR_STR clob, 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 clob, FLAGS IN NUMBER) RETURN NUMBER, MEMBER FUNCTION ODCIAGGREGATEMERGE(SELF IN OUT zh_concat_im, SCTX2 IN zh_concat_im) RETURN NUMBER ); --TYPE BODY 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 clob, 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; --FUNCTION create or replace FUNCTION zh_concat(P1 VARCHAR2) RETURN clob AGGREGATE USING zh_concat_im;