标签:ora-22922
今天开发报表遇到了ORA-22922: 不存在的 LOB 值问题,原因是用了wm_concat函数,转换后是clob类型,导致报表查询时报错。
后来改为使用listagg函数替代,完美解决问题,同时网上还有一种解决方法。新建一个自定义函数。
保存一下这个自定义函数
列转行的函数:
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 ;
/
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标签:ora-22922
原文地址:http://zxf261.blog.51cto.com/701797/1888659