{"id":1382,"date":"2020-06-20T16:52:15","date_gmt":"2020-06-20T08:52:15","guid":{"rendered":"http:\/\/www.821121.com\/?p=1382"},"modified":"2021-01-19T16:54:21","modified_gmt":"2021-01-19T08:54:21","slug":"12c%e6%96%b0%e7%89%b9%e6%80%a7%ef%bc%9awm_concat%e5%87%bd%e6%95%b0%e7%9a%84%e6%9b%bf%e4%bb%a3%e6%96%b9%e5%bc%8f%ef%bc%882%ef%bc%89","status":"publish","type":"post","link":"http:\/\/www.821121.com\/?p=1382","title":{"rendered":"12C\u65b0\u7279\u6027\uff1aWM_CONCAT\u51fd\u6570\u7684\u66ff\u4ee3\u65b9\u5f0f\uff082\uff09"},"content":{"rendered":"

12C\u65b0\u7279\u6027\uff1aWM_CONCAT\u51fd\u6570\u7684\u66ff\u4ee3\u65b9\u5f0f\uff081\uff09\u4e2d\u63d0\u5230\u4e86listagg\u957f\u5ea6\u4e0d\u591f\uff0c\u5728\u90e8\u5206\u60c5\u51b5\u4e0b\u65e0\u6cd5\u6ee1\u8db3\u8981\u6c42\u3002\u5728\u7f51\u7edc\u4e0a\u627e\u5230\u4e86\u624b\u5de5\u521b\u5efawm_concat\u51fd\u6570\u7684\u65b9\u6cd5\uff0c\u73b0\u8fdb\u884c\u6d4b\u8bd5\uff1a<\/p>\n

1\u3001\u521b\u5efawm_concat\u51fd\u6570<\/h2>\n
--\u89e3\u9501wmsys\u7528\u6237\n\nalter user wmsys account unlock;\n\n--\u5e76\u4e3awmsys\u7528\u6237\u6388\u6743\uff0c\u53ef\u6839\u636e\u9700\u8981\u6388\u6743\uff0c\u4e0d\u5efa\u8bae\u6388\u6743\u6240\u6709\u6743\u9650\ngrant all privileges to wmsys;\n\n--\u56e0\u4e3a\u4e0d\u77e5\u9053wmsys\u7528\u6237\u7684\u5bc6\u7801\uff0c\u5c06\u5176\u4fee\u6539\nalter user wmsys identified by wmsys;\n\n--\u4f7f\u7528wmsys\u7528\u6237\u767b\u5f55\u6570\u636e\u5e93\nconn wmsys\/123456\n\n--\u5b9a\u4e49\u7c7b\u578b\n\nCREATE OR REPLACE TYPE wm_concat_impl AUTHID CURRENT_USER AS OBJECT\n(\n  CURR_STR    VARCHAR2(32767),\n  CURR_STR_C  CLOB,\n  STATIC FUNCTION ODCIAGGREGATEINITIALIZE(SCTX IN OUT WM_CONCAT_IMPL) RETURN NUMBER,\n  MEMBER FUNCTION ODCIAGGREGATEITERATE(SELF IN OUT WM_CONCAT_IMPL, P1 VARCHAR2) RETURN NUMBER,\n  MEMBER FUNCTION ODCIAGGREGATETERMINATE(SELF WM_CONCAT_IMPL, RETURNVALUE OUT CLOB, FLAGS NUMBER) RETURN NUMBER,\n  MEMBER FUNCTION ODCIAGGREGATEMERGE(SELF IN OUT WM_CONCAT_IMPL, SCTX2 WM_CONCAT_IMPL) RETURN NUMBER\n);\n\/\n\n--\u5b9a\u4e49\u7c7b\u578bbody:  \nCREATE OR REPLACE TYPE BODY wm_concat_impl IS\n  STATIC FUNCTION ODCIAGGREGATEINITIALIZE(SCTX IN OUT WM_CONCAT_IMPL) RETURN NUMBER IS\n  BEGIN\n    SCTX := WM_CONCAT_IMPL(NULL,NULL) ;\n    RETURN ODCICONST.SUCCESS;\n  END;\n  MEMBER FUNCTION ODCIAGGREGATEITERATE(SELF IN OUT WM_CONCAT_IMPL, P1 VARCHAR2) RETURN NUMBER IS\n  BEGIN\n    IF (CURR_STR_C IS NULL AND (CURR_STR IS NULL OR LENGTH(CURR_STR)<29950)) THEN\n      IF(CURR_STR IS NOT NULL) THEN \n        CURR_STR := CURR_STR || ',' || P1;\n      ELSE\n        CURR_STR := P1;\n      END IF;\n    ELSE\n      IF (CURR_STR_C IS NULL) THEN\n        CURR_STR_C := CURR_STR ;\n        CURR_STR := NULL ;\n      END IF ;\n      CURR_STR_C := CURR_STR_C || ',' || P1;\n    END IF ;\n    RETURN ODCICONST.SUCCESS;\n  END;\n  MEMBER FUNCTION ODCIAGGREGATETERMINATE(SELF WM_CONCAT_IMPL, RETURNVALUE OUT CLOB, FLAGS NUMBER) RETURN NUMBER IS\n  BEGIN\n    IF (CURR_STR IS NOT NULL) THEN\n      RETURNVALUE := CURR_STR ;\n    ELSE\n      RETURNVALUE := CURR_STR_C ;\n    END IF ;\n    RETURN ODCICONST.SUCCESS;\n  END;\n  MEMBER FUNCTION ODCIAGGREGATEMERGE(SELF IN OUT WM_CONCAT_IMPL, SCTX2 WM_CONCAT_IMPL) RETURN NUMBER IS\n  BEGIN\n    IF(SCTX2.CURR_STR IS NOT NULL) THEN \n      SELF.CURR_STR := SELF.CURR_STR || ',' || SCTX2.CURR_STR ;\n    END IF;\n    RETURN ODCICONST.SUCCESS;\n  END;\nEND;\n\/\n\n--\u81ea\u5b9a\u4e49\u884c\u53d8\u5217\u51fd\u6570:  \nCREATE OR REPLACE FUNCTION wm_concat(P1 VARCHAR2)  \nRETURN CLOB AGGREGATE USING WM_CONCAT_IMPL ;  \n\/  \n\n--\u521b\u5efa\u540c\u4e49\u8bcd\u5e76\u6388\u6743\uff1a\ncreate public synonym WM_CONCAT_IMPL for wmsys.WM_CONCAT_IMPL;  \ncreate public synonym wm_concat for wmsys.wm_concat;    \ngrant execute on WM_CONCAT_IMPL to public;  \ngrant execute on wm_concat to public;\n\n--\u9501\u5b9awmsys\u7528\u6237\nalter user wmsys account lock;<\/code><\/pre>\n
2\u3001\u6d4b\u8bd5\u51fd\u6570<\/h2>\n
SQL> SELECT wmsys.WM_CONCAT(TYPE) from v$parameter;\n\nWMSYS.WM_CONCAT(TYPE)\n--------------------------------------------------------------------------------\n2,3,3,1,3,1,3,3,1,2,3,3,2,2,2,6,2,1,3,3,1,2,1,6,6,6,6,6,6,3,3,6,2,2,1,2,2,2,2,\n2,\n\nSQL> SET LONG 10000000 \nSQL> \/\n\nWMSYS.WM_CONCAT(TYPE)\n--------------------------------------------------------------------------------\n2,3,3,1,3,1,3,3,1,2,3,3,2,2,2,6,2,1,3,3,1,2,1,6,6,6,6,6,6,3,3,6,2,2,1,2,2,2,2,\n2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,3,1,2,2,3,1,1,2,2,3,3,\n2,2,3,3,3,3,2,1,2,2,2,1,2,1,3,3,2,1,6,6,6,2,2,2,3,3,\n2,2,3,6,6,6,6,6,6,6,6,6,2,2,3,2,2,2,6,2,2,2,2,2,2,2,\n2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,\n2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,\n2,2,2,2,2,1,2,2,3,2,2,3,3,2,2,3,3,2,3,6,3,3,3,3,3,1,\n1,3,2,2,2,2,2,2,2,6,2,1,3,2,3,3,1,2,3,1,1,3,6,1,2,1,\n3,1,3,3,1,2,2,2,3,2,3,3,2,6,6,2,2,1,2,2,2,2,2,2,2,2,\n2,3,3,2,2,2,2,2,2,1,2,1,1,1,2,3,1,1,1,2,3,2,2,2,1,3,\n3,3,2,2,3,3,3,3,3,1,2,2,2,2,2,1,3,2,2,1,2,2,1,3,2,2,\n\nWMSYS.WM_CONCAT(TYPE)\n--------------------------------------------------------------------------------\n1,1,2,3,1,3,3,3,2,2,3,3,2,3,3,2,6,3,3,2,2,2,2,2,2,2,\n2,2,1,3,3,1,3,3,3,2,2,2,2,2,2,3,3,1,1,2,2,2,2,2,3,4,\n1,2,2,1,1,2,2,1,3,3,3,2,2,6,2,3,2,2,1,1,1,3,1,1,1,1,\n2,2,1,1,1,3,2,1,1,1,2,1,1,2,1,1,2,2,2,3,1,1,6,6,2,1,\n2,3,1,2,1,2,2,6,2,2,2,1,3,3,2,3,1,1,2,2,2,1,2,1,2,2,\n1,2,3,3,1,2,2,2,2,6,3,2,2,2,3,2,2<\/code><\/pre>\n
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12C\u65b0\u7279\u6027\uff1aWM_CONCAT\u51fd\u6570\u7684\u66ff\u4ee3\u65b9\u5f0f\uff081<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,39],"tags":[],"class_list":["post-1382","post","type-post","status-publish","format-standard","hentry","category-oracle-12c","category-39"],"_links":{"self":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts\/1382","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1382"}],"version-history":[{"count":1,"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts\/1382\/revisions"}],"predecessor-version":[{"id":1383,"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts\/1382\/revisions\/1383"}],"wp:attachment":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1382"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}