Oracle删除字段中的空格、回车及指定字符的实例代码

create or replace procedure PROC_test is
–Description:删除字段中的指定字符(回车chr（13）、换行chr（10）)
–By LiChao
–Date:2016-03-01
colname varchar(20); –列名
cnt number; –包含换行符的列的行数
v_sql varchar(2000); –动态SQL变量
begin
–读取表中的列
for col in (select column_name
from user_tab_columns
where table_name = ‘TEMP’) loop
colname := col.column_name;
–替换换行符chr(10)
v_sql := ‘select count(1) from temp where instr(‘ || colname ||
‘,chr(10))>0 ‘;
EXECUTE IMMEDIATE V_SQL
into cnt;
if cnt > 0 then
v_sql := ‘update temp set ‘ || colname || ‘=trim(replace(‘ || colname ||
‘,chr(10),””))’ || ‘where instr(‘ || colname ||
‘,chr(10))>0 ‘;
EXECUTE IMMEDIATE V_SQL;
commit;
end if;
–替换回车符chr(13)
v_sql := ‘select count(1) from temp where instr(‘ || colname ||
‘,chr(13))>0 ‘;
EXECUTE IMMEDIATE V_SQL
into cnt;
if cnt > 0 then
v_sql := ‘update temp set ‘ || colname || ‘=trim(replace(‘ || colname ||
‘,chr(13),””))’ || ‘where instr(‘ || colname ||
‘,chr(13))>0 ‘;
EXECUTE IMMEDIATE V_SQL;
commit;
end if;
–替换’|’ chr(124) 为’*’ chr（42）
v_sql := ‘select count(1) from temp where instr(‘ || colname ||
‘,chr(124))>0 ‘;
EXECUTE IMMEDIATE V_SQL
into cnt;
if cnt > 0 then
v_sql := ‘update temp set ‘ || colname || ‘=replace(‘ || colname ||
‘,chr(124),chr(42))’ || ‘where instr(‘ || colname ||
‘,chr(124))>0 ‘;
EXECUTE IMMEDIATE V_SQL;
commit;
end if;
end loop;
end PROC_test;
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