--by zhuyj 显示&
select ‘\&s’ from dual; --注意必须要加引号

--by zhuyj
create or replace function fun_export_data(
v_tablename in varchar2,
v_condition in varchar2
)
return varchar2 is
/*
by zhuyj 20171130
*/
cursor cur(v_tablename varchar2) is
select column_name,data_type from user_tab_columns where table_name=upper(v_tablename) order by COLUMN_ID;
tmp varchar2(4000);
msg varchar2(4000);
len number;
v_condition1 varchar2(4000);
begin
v_condition1:=' '||v_condition;
tmp:='select ''insert into '||v_tablename||' values(''';
for re in cur(v_tablename) loop
if re.data_type='CHAR' or re.data_type='DATE' or re.data_type='VARCHAR2' or re.data_type='RAW' then
tmp:=tmp||''''''||'||'||re.column_name||'||'||''''''',''';
else
tmp:=tmp||'||'||nvl(re.column_name,0)||'||'||''',''';
end if;
end loop;
len:=length(tmp);
msg:=substr(tmp,1,len-3);
if v_condition is not null then
msg:=msg||''');'' from '||v_tablename||v_condition1||';';
else
msg:=msg||''');'' from '||v_tablename||';';
end if;
return msg;
end;

--执行函数例子：
select BuildSelSql('test') from dual; --test为表名
sql脚本如下 test.sql
--应获取到sql 导出表的insert语句 by zhuyj
select 'insert into test values('''||ID||''','''||SEQ||''','||FLAG||');' from test;

set trimout on
set trimspool on
set heading off
set feedback off
set termout off
set ver off
set linesize 4000
set pagesize 0
whenever sqlerror exit
set serveroutput on
--生成拼接insert的sql
spool e:\sql\test1.sql;
select fun_export_data('test','where id in (''a'',''a2'')') from dual;
spool off
set pagesize 6 --设置页大小的行数
btitle left 'commit;' --分批提交
--生成insert的sql
spool e:\sql\test.sql;
start e:\sql\test1.sql
spool off
/

--执行insert语句：
@test.sql
执行后查看test.sql文件的内容