Purvesh K wrote:

Can you provide some sample data for explaining this? And it would be of great help if you can provide a working demo of your situation.How about not using SQL*Plus to do the job, but do it from within PL/SQL?

One of my standard examples for writing data to a file in CSV format...

As sys user:

CREATE OR REPLACE DIRECTORY TEST_DIR AS '\tmp\myfiles'

/

GRANT READ, WRITE ON DIRECTORY TEST_DIR TO myuser

/As myuser:

CREATE OR REPLACE PROCEDURE run_query(p_sql IN VARCHAR2

,p_dir IN VARCHAR2

,p_header_file IN VARCHAR2

,p_data_file IN VARCHAR2 := NULL) IS

v_finaltxt VARCHAR2(4000);

v_v_val VARCHAR2(4000);

v_n_val NUMBER;

v_d_val DATE;

v_ret NUMBER;

c NUMBER;

d NUMBER;

col_cnt INTEGER;

f BOOLEAN;

rec_tab DBMS_SQL.DESC_TAB;

col_num NUMBER;

v_fh UTL_FILE.FILE_TYPE;

v_samefile BOOLEAN := (NVL(p_data_file,p_header_file) = p_header_file);

BEGIN

c := DBMS_SQL.OPEN_CURSOR;

DBMS_SQL.PARSE(c, p_sql, DBMS_SQL.NATIVE);

d := DBMS_SQL.EXECUTE(c);

DBMS_SQL.DESCRIBE_COLUMNS(c, col_cnt, rec_tab);

FOR j in 1..col_cnt

LOOP

CASE rec_tab(j).col_type

WHEN 1 THEN DBMS_SQL.DEFINE_COLUMN(c,j,v_v_val,2000);

WHEN 2 THEN DBMS_SQL.DEFINE_COLUMN(c,j,v_n_val);

WHEN 12 THEN DBMS_SQL.DEFINE_COLUMN(c,j,v_d_val);

ELSE

DBMS_SQL.DEFINE_COLUMN(c,j,v_v_val,2000);

END CASE;

END LOOP;

-- This part outputs the HEADER

v_fh := UTL_FILE.FOPEN(upper(p_dir),p_header_file,'w',32767);

FOR j in 1..col_cnt

LOOP

v_finaltxt := ltrim(v_finaltxt||','||lower(rec_tab(j).col_name),',');

END LOOP;

-- DBMS_OUTPUT.PUT_LINE(v_finaltxt);

UTL_FILE.PUT_LINE(v_fh, v_finaltxt);

IF NOT v_samefile THEN

UTL_FILE.FCLOSE(v_fh);

END IF;

--

-- This part outputs the DATA

IF NOT v_samefile THEN

v_fh := UTL_FILE.FOPEN(upper(p_dir),p_data_file,'w',32767);

END IF;

LOOP

v_ret := DBMS_SQL.FETCH_ROWS(c);

EXIT WHEN v_ret = 0;

v_finaltxt := NULL;

FOR j in 1..col_cnt

LOOP

CASE rec_tab(j).col_type

WHEN 1 THEN DBMS_SQL.COLUMN_VALUE(c,j,v_v_val);

v_finaltxt := ltrim(v_finaltxt||',"'||v_v_val||'"',',');

WHEN 2 THEN DBMS_SQL.COLUMN_VALUE(c,j,v_n_val);

v_finaltxt := ltrim(v_finaltxt||','||v_n_val,',');

WHEN 12 THEN DBMS_SQL.COLUMN_VALUE(c,j,v_d_val);

v_finaltxt := ltrim(v_finaltxt||','||to_char(v_d_val,'DD/MM/YYYY HH24:MI:SS'),',');

ELSE

v_finaltxt := ltrim(v_finaltxt||',"'||v_v_val||'"',',');

END CASE;

END LOOP;

-- DBMS_OUTPUT.PUT_LINE(v_finaltxt);

UTL_FILE.PUT_LINE(v_fh, v_finaltxt);

END LOOP;

UTL_FILE.FCLOSE(v_fh);

DBMS_SQL.CLOSE_CURSOR(c);

END;This allows for the header row and the data to be written to seperate files if required.

e.g.

SQL> exec run_query('select * from emp','TEST_DIR','output.txt');

PL/SQL procedure successfully completed.Output.txt file contains:

empno,ename,job,mgr,hiredate,sal,comm,deptno

7369,"SMITH","CLERK",7902,17/12/1980 00:00:00,800,,20

7499,"ALLEN","SALESMAN",7698,20/02/1981 00:00:00,1600,300,30

7521,"WARD","SALESMAN",7698,22/02/1981 00:00:00,1250,500,30

7566,"JONES","MANAGER",7839,02/04/1981 00:00:00,2975,,20

7654,"MARTIN","SALESMAN",7698,28/09/1981 00:00:00,1250,1400,30

7698,"BLAKE","MANAGER",7839,01/05/1981 00:00:00,2850,,30

7782,"CLARK","MANAGER",7839,09/06/1981 00:00:00,2450,,10

7788,"SCOTT","ANALYST",7566,19/04/1987 00:00:00,3000,,20

7839,"KING","PRESIDENT",,17/11/1981 00:00:00,5000,,10

7844,"TURNER","SALESMAN",7698,08/09/1981 00:00:00,1500,0,30

7876,"ADAMS","CLERK",7788,23/05/1987 00:00:00,1100,,20

7900,"JAMES","CLERK",7698,03/12/1981 00:00:00,950,,30

7902,"FORD","ANALYST",7566,03/12/1981 00:00:00,3000,,20

7934,"MILLER","CLERK",7782,23/01/1982 00:00:00,1300,,10The procedure allows for the header and data to go to seperate files if required. Just specifying the "header" filename will put the header and data in the one file.

Adapt to output different datatypes and styles are required.

總結

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