DBMS_SQL.PARSE EXECUTES the cursor? (was Re: Developer question)
- From: "Taylor, Chris David" <ChrisDavid.Taylor@xxxxxxxxxxxxxxx>
- To: "'Dunbar, Norman (Capgemini)'" <norman.dunbar.capgemini@xxxxxxxxxxxxxxxxxxxxxxxxx>, "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
- Date: Mon, 5 Dec 2011 10:48:19 -0600
Interesting.
It appears that dbms_sql.parse executes the actual CURSOR in 10g.
I'm guessing this is expected behavior even though DBMS_SQL has a separate
EXECUTE procedure?
SQL> create table test1
2 (val1 number)
3 /
Table created.
SQL> declare
2 cursor_name INTEGER;
3 BEGIN
4 cursor_name := dbms_sql.open_cursor;
5 DBMS_SQL.PARSE(cursor_name, 'drop table test1', DBMS_SQL.NATIVE);
6 DBMS_SQL.CLOSE_CURSOR(cursor_name);
7 EXCEPTION
8 WHEN OTHERS THEN
9 DBMS_SQL.CLOSE_CURSOR(cursor_name);
10 raise;
11 END;
12 /
PL/SQL procedure successfully completed.
SQL> select * from test1
2 /
select * from test1
*
ERROR at line 1:
ORA-00942: table or view does not exist
Chris Taylor
Sr. Oracle DBA
Ingram Barge Company
Nashville, TN 37205
"Quality is never an accident; it is always the result of intelligent effort."
-- John Ruskin (English Writer 1819-1900)
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Hi Chris,
take a look at DBMS_SQL.Parse() - if you want to do it in PL/SQL that is. For
other tools such as Perl, C++, etc, then it's all down to what options the tool
itself provides in its Oracle Interface utilities.
HTH
Cheers,
Norm.
Norman Dunbar
Contract Senior Oracle DBA
Capgemini Database Build Team
Internal : 7 28 2051
External : 0113 231 2051
>> -----Original Message-----
>> From: oracle-l-bounce@xxxxxxxxxxxxx
>> [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Taylor, Chris
>> David
>> Sent: 05 December 2011 15:37
>> To: 'oracle-l@xxxxxxxxxxxxx'
>> Subject: Developer question
>>
>> I'm forwarding this to the list because I don't know an answer off
>> the top of my head and Google isn't being much help due to the nature
>> of the search.
>> Developer wants to know if you can prepare a statement in a string
>> variable like 'execute someproc();' and check the validity of the
>> statement without executing it. (PARSE it only)
>>
>> I *thought* there was a way in Oracle to parse a statement without
>> executing it but I can't figure it out at the moment.
>>
>>
>> Chris Taylor
>> Sr. Oracle DBA
>> Ingram Barge Company
>> Nashville, TN 37205
>>
>> "Quality is never an accident; it is always the result of intelligent
>> effort."
>> -- John Ruskin (English Writer 1819-1900)
>>
>> CONFIDENTIALITY NOTICE: This e-mail and any attachments are
>> confidential and may also be privileged. If you are not the named
>> recipient, please notify the sender immediately and delete the
>> contents of this message without disclosing the contents to anyone,
>> using them for any purpose, or storing or copying the information on
>> any medium.
>>
>>
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