DUMP_CVS: Procedure to dump table data into csv

Here is a procedure which can be used to dump table data into csv format.

CREATE OR REPLACE PROCEDURE MYSCHEMA.dump_csv( p_query in varchar2, p_separator in varchar2 default ',', p_dir in varchar2 , p_filename in varchar2 )
is
l_output utl_file.file_type;
l_theCursor integer default dbms_sql.open_cursor;
l_columnValue varchar2(2000);
l_status integer;
l_colCnt number default 0;
l_separator varchar2(10) default '';
l_cnt number default 0;
begin
l_output := utl_file.fopen( p_dir, p_filename, 'w' );

dbms_sql.parse( l_theCursor, p_query,
dbms_sql.native );

for i in 1 .. 255 loop
begin
dbms_sql.define_column( l_theCursor, i,
l_columnValue, 2000 );
l_colCnt := i;
exception
when others then
if ( sqlcode = -1007 ) then exit;
else
raise;
end if;
end;
end loop;

dbms_sql.define_column( l_theCursor, 1,
l_columnValue, 2000 );

l_status := dbms_sql.execute(l_theCursor);

loop
exit when ( dbms_sql.fetch_rows(l_theCursor) <= 0 );
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 || l_columnValue );
l_separator := p_separator;
end loop;
utl_file.new_line( l_output );
l_cnt := l_cnt+1;
end loop;
dbms_sql.close_cursor(l_theCursor);

utl_file.fclose( l_output );
dbms_output.put_line( to_char(l_cnt) ||' rows exported into '||p_filename||' file...' );
end dump_csv;
/