PLSQL PLSQL讀和寫CSV檔案方式（案例）

2012-01-06 created by baoxinjin

一、摘要

讀寫csv的方式

1. 寫csv

step1. 建立測試目錄

step2. 寫csv檔案

step3. 檢視csv檔案

2. 讀csv

step1. 建立測試表

step2. 讀csv檔案

step3. 檢視表

二、寫csv檔案

step1. 建立測試目錄

--

建立測試目錄
create
orreplace directory bxjcsv as
'/home/oracle/bxjcsv'; 
--目錄許可權分配
grant
read, write on directory bxjcsv to public;

step2. 寫csv檔案

declare

f_emp utl_file.file_type;
cursor
cur_emp
isselect
first_name,last_name,email,phone_number,salary
from
hr.employees
where rownum<=10;
rec_emp cur_emp
%rowtype;
begin
f_emp :
=utl_file.fopen (
'bxjcsv
','emp_dept.csv
','w
',32767
); 
for rec_emp in
cur_emp
loop
utl_file.put (f_emp, rec_emp.first_name);
utl_file.put (f_emp, ',
'||rec_emp.last_name);
utl_file.put (f_emp, ',
'||rec_emp.email);
utl_file.put (f_emp, ',
'||rec_emp.phone_number);
utl_file.put (f_emp, ',
'||rec_emp.salary);
utl_file.new_line (f_emp);
endloop;
utl_file.fclose (f_emp);
end;

step3. 檢視csv檔案

三、讀csv檔案

step1. 建立測試表

create

table
hr.bxj_employees (
first_name 
varchar2(50
),last_name 
varchar2(50
),email 
varchar2(100
),phone_number 
varchar2(50
),salary 
number
)

step2. 讀csv檔案

declare

f_emp utl_file.file_type;
v_line 
varchar2 (1000
); v_first_name hr.bxj_employees.first_name
%type;
v_last_name hr.bxj_employees.last_name
%type;
v_email hr.bxj_employees.email
%type;
v_phone_number hr.bxj_employees.phone_number
%type;
v_salary hr.bxj_employees.salary
%type;
begin
f_emp :
= utl_file.fopen ('
bxjcsv
', '
emp_dept.csv
', 'r'
); 
ifutl_file.is_open (f_emp)
then
loop
begin
utl_file.get_line (f_emp, v_line, 
1000
); 
if v_line is
null
then
exit
; 
endif
; v_first_name :
= regexp_substr (v_line,'
[^,]+
',1,1
); v_last_name :
= regexp_substr (v_line,'
[^,]+
',1,2
); v_email :
= regexp_substr (v_line,'
[^,]+
',1,3
); v_phone_number :
= regexp_substr (v_line,'
[^,]+
',1,4
); 
v_salary :
= regexp_substr (v_line,'
[^,]+
',1,5
); 
insert
into
hr.bxj_employees
values
(v_first_name,v_last_name,v_email,v_phone_number,v_salary);
commit
; exception 
when
no_data_found 
then
exit
; 
end;
endloop;
endif;
utl_file.fclose (f_emp);
end;

step3. 檢視表

thanks and regards

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