oracel中的表导出csv文件

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1.定义存储过程

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 || '"'); --输出表字段    DBMS_SQL.DEFINE_COLUMN(L_THECURSOR, I, L_COLUMNVALUE, 4000);    L_SEPARATOR := ',';  END LOOP;  UTL_FILE.NEW_LINE(L_OUTPUT); --输出表字段  --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;

2.指定导出的储存路径

create or replace directory OUT_PATH as '目标路径';

例如sql>create or replace directory OUT_PATH as 'D:\';

3.指定当前用户下的表名

通过查询语句查出需要执行的存储过程的语句

SELECT 'EXEC sql_to_csv(''select * from ' ||T.TABLE_NAME ||''',''OUT_PATH''' || ',''ODS_MDS.' || T.TABLE_NAME ||'.csv'');' FROM user_TABLES T where t.TABLE_NAME='表名'

例如:

SELECT 'EXEC sql_to_csv(''select * from ' ||T.TABLE_NAME ||''',''OUT_PATH''' || ',''' || T.TABLE_NAME ||'.csv'');' FROM user_TABLES T where t.TABLE_NAME='POSITION_20170912';

EXEC sql_to_csv('select * from POSITION_20170912','OUT_PATH','POSITION_20170912.csv');

4.执行对应的过程语句

 SQL> EXEC sql_to_csv('select * from POSITION_20170912','OUT_PATH','POSITION_20170912.csv'); PL/SQL procedure successfully completed

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