在执行sql时，比如大批量数据转移时，经常会遇到无效数字的问题，如何快速定位到时那个字段那个值？这个问题的原因是varchar2转number出错，用正则表达式可以快速定位出问题数据，下面来做个例子:
sql> drop table test purge;
sql> create table test as select * from dba_objects;sql> update test set subobject_name=object_id;
sql> update test set subobject_name='gg' where rownum<5;
sql> commit;
sql> select count(1) from test where subobject_name=object_id; select count(1) from test where subobject_name=object_id * 第 1 行出现错误: ora-01722: 无效数字 sql> select subobject_name,object_id 2 from test 3 where not regexp_like(subobject_name,'[[:digit:]]'); SUBOBJECT_NAME OBJECT_ID ------------------------------ ---------- gg 20 gg 44 gg 28 gg 15
