oracle csv存储过程

最新推荐文章于 2024-04-15 15:42:40 发布

lbxhappy

最新推荐文章于 2024-04-15 15:42:40 发布

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分类专栏： database 文章标签：数据库

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CREATE OR REPLACE PROCEDURE SQL_TO_CSV

    (

        P_QUERY IN VARCHAR2 ,                         -- PLSQL文

        P_DIR IN VARCHAR2 ,                           -- 导出的文件放置目录

        P_FILENAME IN VARCHAR2                        -- CSV名

)

IS

        L_OUTPUT UTL_FILE.FILE_TYPE;

        L_THECURSOR INTEGER DEFAULT DBMS_SQL.OPEN_CURSOR;

        L_COLUMNVALUE VARCHAR2 ( 4000 );

        L_STATUS INTEGER ;

        L_COLCNT NUMBER : = 0 ;

        L_SEPARATOR VARCHAR2 ( 1 );

        L_DESCTBL DBMS_SQL.DESC_TAB;

        P_MAX_LINESIZE NUMBER : = 32000 ;

BEGIN

         -- OPEN FILE

        L_OUTPUT : = UTL_FILE.FOPEN(P_DIR, P_FILENAME, ' W ' , P_MAX_LINESIZE);

         -- DEFINE DATE FORMAT

         EXECUTE IMMEDIATE ' ALTER SESSION SET NLS_DATE_FORMAT= '' YYYY-MM-DD HH24:MI:SS ''' ;

         -- OPEN CURSOR

        DBMS_SQL.PARSE( L_THECURSOR, P_QUERY, DBMS_SQL.NATIVE );

        DBMS_SQL.DESCRIBE_COLUMNS( L_THECURSOR, L_COLCNT, L_DESCTBL );

         -- DUMP TABLE COLUMN NAME

         FOR I IN 1 .. L_COLCNT LOOP

            UTL_FILE.PUT( L_OUTPUT, L_SEPARATOR || ' ” ' || L_DESCTBL(I). COL_NAME || ' ” ' );

            DBMS_SQL.DEFINE_COLUMN( L_THECURSOR, I, L_COLUMNVALUE, 4000 );

            L_SEPARATOR : = ' , ' ;

         END LOOP;

        UTL_FILE.NEW_LINE( L_OUTPUT );

         -- EXECUTE THE QUERY STATEMENT

        L_STATUS : = DBMS_SQL. EXECUTE (L_THECURSOR);

         -- DUMP TABLE COLUMN VALUE

         WHILE ( DBMS_SQL.FETCH_ROWS(L_THECURSOR) > 0 ) LOOP

            L_SEPARATOR : = '' ;

             FOR I IN 1 .. L_COLCNT LOOP

                DBMS_SQL.COLUMN_VALUE( L_THECURSOR, I, L_COLUMNVALUE );

                UTL_FILE.PUT( L_OUTPUT, L_SEPARATOR || ' ” ' ||

                TRIM(BOTH ' ' FROM REPLACE (L_COLUMNVALUE, ' ” ' , ' ”” ' )) || ' ” ' );

                L_SEPARATOR : = ' , ' ;

             END LOOP;

            UTL_FILE.NEW_LINE( L_OUTPUT );

         END LOOP;

         -- CLOSE CURSOR

        DBMS_SQL.CLOSE_CURSOR(L_THECURSOR);

         -- CLOSE FILE

        UTL_FILE.FCLOSE( L_OUTPUT );

EXCEPTION

         WHEN OTHERS THEN

        RAISE;

END ;
/

-- 创建存放文件的目录
CREATE OR REPLACE DIRECTORY MYDIR AS ' C:\ ' ;

-- 执行块
begin

    sql_to_csv( ' select * from au_jxs ' , ' MYDIR ' , ' EXAMPLE.CSV ' );

end ;
/