Oracle with as ora-00903: invalid table name multi report error

There is a problem today with as Error will be reported if used for many times ！！

I can't check a lot of information online ！

order Is a reserved word , If you use it carelessly order This word can only be enclosed in double quotation marks "order"   operation

 

subject This is it  

The first time I tried to use a single table with as The normal operation ！！

with sss as (select cc.cname,cc.cid abcd,ss.sid from course cc,sc scc,student ss where cc.cid=scc.cid and scc.sid=ss.sid and ss.sid=01)
  2  select * from sss
  3  ;

CNAME      ABCD       SID
---------- ---------- ----------
mathematics       02         01
Chinese language and literature       01         01
English       03         01
 

with t as (select cc.cname,cc.cid abcd,ss.sid from course cc,sc scc,student ss where cc.cid=scc.cid and scc.sid=ss.sid and ss.sid!=01)
  2  select * from t;

CNAME      ABCD       SID
---------- ---------- ----------
English       03         02
mathematics       02         02
Chinese language and literature       01         02
sports       04         03
English       03         03
mathematics       02         03
Chinese language and literature       01         03
sports       04         04
English       03         04
sports       04         04
Chinese language and literature       01         04

CNAME      ABCD       SID
---------- ---------- ----------
mathematics       02         05
English       03         05
English       03         06
Chinese language and literature       01         06
sports       04         07
mathematics       02         07
English       03         07
 

But I want to 2 Table associated query The following error occurred

with sss as (select cc.cname,cc.cid abcd,ss.sid from course cc,sc scc,student ss where cc.cid=scc.cid and scc.sid=ss.sid and ss.sid=01),
with t as (select cc.cname,cc.cid abcd,ss.sid from course cc,sc scc,student ss where cc.cid=scc.cid and scc.sid=ss.sid and ss.sid!=01)
  2    3  select * from t,sss;
with t as (select cc.cname,cc.cid abcd,ss.sid from course cc,sc scc,student ss where cc.cid=scc.cid and scc.sid=ss.sid and ss.sid!=01)
*
ERROR at line 2:
ORA-00903: invalid table name
 

 

The translation is very clear Invalid table name ！！（ If the table name is clearly right, why is it invalid ？？？？） 

Later, I found many wtih  Success after removal

SQL> ;
  1  with sss as (select cc.cname,cc.cid abcd,ss.sid from course cc,sc scc,student ss where cc.cid=scc.cid and scc.sid=ss.sid and ss.sid=01),
  2  with t as (select cc.cname,cc.cid abcd,ss.sid from course cc,sc scc,student ss where cc.cid=scc.cid and scc.sid=ss.sid and ss.sid!=01)
  3* select * from t,sss
with sss as (select cc.cname,cc.cid abcd,ss.sid from course cc,sc scc,student ss where cc.cid=scc.cid and scc.sid=ss.sid and ss.sid=01),
t as (select cc.cname,cc.cid abcd,ss.sid from course cc,sc scc,student ss where cc.cid=scc.cid and scc.sid=ss.sid and ss.sid!=01)
  2    3  select * from t,sss;

CNAME      ABCD       SID        CNAME      ABCD       SID
---------- ---------- ---------- ---------- ---------- ----------
 English        03         02          Chinese language and literature        01         01
 English        03         02          mathematics        02         01

 

Be careful 1 Multiple tables with as  Get rid of the back

 

Be careful 2 Multiple tables with as  Add a comma in the middle

The data is successfully found ！！！！！！！！！！！！！