查询结果导出CSV文件

Oracle导出CSV文件

1）建立存储过程

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 || '”' );

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;
/

2）创建存放文件的目录

CREATE OR REPLACE DIRECTORY MYDIR AS '/u01/app/oracle';
grant read,write on DIRECTORY MYDIR to public;

3）执行块

begin
sql_to_csv('select * from dual','MYDIR','dbs_segments.CSV');
end;
/

4）验证