1、创建存储过程
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、创建 directory目录
create or replace directory OUT_PATH as '/expdp_dir';
3、拼接出导出的语句
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'
如果复杂的sql 语句可以创建出一张临时表，在把临时表导出来
例如： create table a as select * from bb ,cc where bb.id=cc.id;
直接导出临时表a即可；
4、执行导出csv的语句
EXEC sql_to_csv('select * from A','OUT_PATH','ODS_MDS.A.csv');
成功完成 end！！
