SQL statement returning boolean?

Following a guide for querying Oracle databases in java and it suggests using this code to connect and get some select results:
Connection con=null;
Class.forName("oracle.jdbc.driver.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE","chat","chat");
Statement s=con.createStatement();
ResultSet results = s.execute("SELECT * FROM users WHERE username='kaligula' AND password='1234'");
But when i try and compile this it says:
Error(97,34): incompatible types; found: boolean, required: java.sql.ResultSet
Whats going wrong here?

Looking at the API
http://java.sun.com/j2se/1.4.2/docs/api/java/sql/Statement.html
I see that execute returns a boolean. You want executeQuery
Lee

Similar Messages

BIDS 2008 DataFlow viewer not showing even though the sql statement returns data

Have a dataflow and trying to see why no rows are being written to the destination. I popped a viewer on the connection, but it doesnt show up when I run. What can I check?
The DataFlow source runs a sql statement and it runs fine and returns a result.

Why would that be if I can execute the sql statement that is being used in the OLEDB Source, and I get a result, yet the destination gets no rows afterwards. Even executing the Dataflow task by itself, no rows are written.
I do have a script task that modifies the connection before the dataflow, but this was working fine yesterday :)
Even so, if there was a problem with the connection, I would get an error. There no no errors, it just sees no rows and the dataviewer is never displayed.
What the heck can I check?

Batching SQL Statements - Return Long Raw

I have been using the .NET Framework Data Provider for Oracle and have run into the following limitation.
I need to batch several SQL statements at one time and return a datareader (or another object) with those values. The .NET Framework Data Provider for Oracle from Microsoft doesn't support batching up SQL statements in this manner. Additionally, the values I need to return include a LONGRAW field. From the research I've done PL-SQL can only return 32KB of data for a LONGRAW field if we were to try a different approach like using a stored procedure and a REF CURSOR.
My questions are:
1.) Will the ODP support batched SQL statements? For example, can I issue the following SQL statements and get a datareader?
Select field1, field2 from table1;
Select feild1, field2 from table2;
Select feild1, field2 from table3;
2.) Is there the 32 KB limitation on LONGRAW fields and PL-SQL in Oracle 8.1.7.2.0?
3.) Any suggestions?

1. With ODP.NET, you can batch your SQL statements using anonymous PL/SQL block. For example,
begin
open :1 for select * from emp;
open :2 for select * from dept;
open :3 for select col1 from test;
end;
You need to create three parameters with type OracleDbType.RefCursor and bind them as Output parameters. If you execute the above statement using OracleCommand's ExecuteNonQuery method, you would get three REF Cursors in the Value property of OracleParameter object. You can create an OracleDataReader or populate the Data Set using any or all of these REF Cursors in any order. If you execute the above statement using OracleCommand's ExecuteReader method, you would get OracleDataReader for the first REF Cursor and you would be able to get the OracleDataReader for other REF Cursors using OracleDataReader's NextResult method. Note that ODP.NET does not impose a limitation of closing the first OracleDataReader before opening the second one.
2. Long/Long Raw 32K limitation is imposed by PL/SQL and one way to bypass that limitation is to use LOBs instead. Having LOBs in the stored procedure or anonymous PL/SQL blocks allow you to access data upto 4GB.

How to put the SQL-statement returned value into the field (as a default)

Hi,
I am using Developer/2000 (Forms Designer) under windows 98.
Please tell me how to put the SQL-statement value (as a default value) into the field before enter-query mode. Noted that I have tried the following ways but still some problems:-
1) Place the SQL-statement into PRE_QUERY trigger in the form/block level.
There is a message box which ask 'Do you want to save the changes?'.
2) Place the SQL-statement before execute enter_query. There is still a
message box which ask 'Do you want to save the changes?'.
Any hints? Thanks. Urgent.

solved it!
1) Suppress DEFAULT save message
if form_failure then
raise form_trigger_failure;
end if;
2) Place the default value before enter-query.
Ref: Title='Default value in query field in ENTER_QUERY mode' in designer forum by CVZ
form level trigger
============
WHEN-NEW-ITEM-INSTANCE
=======================
if :system.mode = 'ENTER-QUERY' then
:block.item := 'default waarde';
end if;
3) Suppress the changes whenever leaving the default field.
if :block.item is null then
-- assign statement
end if;

Trying to make an sql statement returning 'owner, tablename, num_rows, measuredate'

Hi, I would like to create a table with the following collumns:
"OWNER|TABLENAME|NUM_ROWS|MEASURE_DATE"
I can get owner, tablename and measure_date (sysdate) from
dba_tables easily with a
select owner, tablename, sysdate
from dba_tables
, but I am having trouble getting the num_rows for each table
seperately.
dba_tables.num_row is not an option because I am not running
statistics on this server and can't (rather: I am told not to.
So somehow I have to add the result of
select count(*) from " an individual table", dynamically.
But I am not sure how.
Eventually the table would have to look like:
JOHN EMP 433 12-JAN-01
JOHN EMP 476 12-JAN-01
MARGE LOC 198 13-JAN-01
All help is very much appreciated,
Mike

HI guy's !
Thanx for all the suggestions, I have tried them all out and its
almost there. However your suggestions display the output on the
screen and I would like to insert the rows into table so to be
able to readout table growth history. I tried to alter your
statements with a create table as select ( and here your plsql)
but this doesnt seem to work. I am sorry that I do not know
pl/sql. Can anyone assist me in completing the code with an
insert into a table?
Mohit Dubey: I am getting an ORA-00952 table or view does not
exist with your code, do I need to edit smth I overlooked?
Suresh: Your code works, but as mentioned above I would like to
get the code into table instead of on the screen, could you help
me with that? I apologize for not knowing plsql.
Barbara: Your code works fine, but it does an update on the
table. Therefore, I cannot query the history of the number of
rows tables. Could you change it to do an insert instead of an
update? I tried to but failed miserably.
Again; thanx all for your suggestions! Now I just need a final
push as I myself am unable to alter the codes into an insert
statement.
Mike

Select count(*) on sql statement returning zero when a matching row exists.

Our account has an ANSI C application that checks for the existence a row on an Oracle table(s) by using the following SQL:
int iCount = 0;
EXEC SQL
SELECT count(rownum) INTO :iCount
FROM sys.all_tab_columns
WHERE table_name IN
(SELECT table_name FROM
sys.all_synonyms
WHERE upper(synonym_name) = upper(:szDestTable))
AND upper(column_name) = upper(:szColumnName)
AND owner = 'DBAUSER';
The bind variables szDestTable and szColumnName are populated with values parsed from columns on another database table. This application is executed through out the day. Occasionally, the application will report a zero in the iCount when there should be a match. I have verified the szDestTable and szColumnName are populated with the correct values which would find a match and they are correct. To make matters even stranger, the application will parse the same input values and find a match (as it should). At some point during the day, and it can be at any time, the application will NOT find a match on the same file, same values. Every subsequent execution of this application will not find a match on the same values. Once the database is brought down and started up in the evening for its normal backups, the application will find a match again on the same values. This problem does not occur every day. I could be a week or a week and a half between incidents.
I printed the contents of the sqlca.sqqlerrm.sqlerrmc field to a log file. The sqlca.sqlerrm.sqlerrmc field reported an ORA-1405 bind variable was null when the iCount was reporting a zero. When I compiled this application, I set the Proc*C flag to UNSAFE_NULLS=yes since there are other bind variable in the application that can be NULL and that is ok.
The above SQL is compiled into the C application using the Proc*C compiler. It is compiled using the Oracle 11.2.0.2 libraries. The application is executed against an Oracle 11.2.0.2 database. The database and application are executed on an HP/Unix 11.31 platform.
This problem did not start occurring until our account went from Oracle 10.2 to Oracle 11.2. Recently, I have changed the SQL to perform a “SELECT COUNT(rownum)” instead of the “SELECT COUNT(*)”. I compiled the application and executed the new application with the SELECT COUNT(rownum) against the same database where the same application with the SELECT COUNT(*) was failing to find a row that actually existed. The application with the SELECT COUNT(rownum) found the matching row as it should have. The new application has been executing in production for about 10 days now without any problems against ten various Oracle 11.2 databases.
Why would SELECT COUNT(*) and SELECT COUNT(rownum) be any different?

This forum is about C programming in general, and about using Studio C in particular.
Your question is about Oracle database programming. You are more likely to find a helpful answer in a forum about database programming. Start here:
https://forums.oracle.com/forums/category.jspa?categoryID=18

SQL History - returning wrong statement if history is sorted

I have searched the forum and not seen anything on this, but I have been getting the wrong SQL statement returned when I select Append/Replace.
I have statements going back to 12-Jan-06 (using 804 since 13-Jan-06, 796 since 12-Jan-06 and 715 last year), so I don't know if I have hit the aging limit or not (I think I counted 221 entries).
It seems to me that it works out the cursor position and then returns that statement number from the history - independently of resorting the history.
For example, if I sort from oldest to newest (based on timestamp) and then select the bottom statement (displays as newest) and Replace, I get the oldest statement in the worksheet. If I select the top statement (displays as oldest) and Replace, I get the newest statement in the worksheet.
This is further complicated by the fact that sorting on the Timestamp is doing an alpha-numeric sort, rather than a date sort. When sorting from oldest to newest, the bottom three timestamps are (in "oldest to newest" order) are:
1/23/06 10:58 AM
1/23/06 9:21 AM
1/23/06 9:31 AM
If I then remove the sorting, the statement returned is the correct one.

It was great to get the fix for the SQL History returning the right statement if sorted (we got it in v1184).
However v1215 still does a text sort on the TimeStamp column rather than a date sort, so 2PM comes before 9AM, etc.
Also, where is the format for the TimeStamp column coming from? As someone who doesn't live in the US and thinks that days should come before months in date formats (ie DD-Mon-YYYY), I am frustrated by yet another product that uses MM/DD/YY, despite my best efforts at telling it otherwise.

Specify two conditions for button type: pl/sql function body return boolean

Hello,
Can anyone help me out with this issue.
I am using Oracle APEX 3.2 version.
I have page zero select list with submit items P0_ITEM1, P0_ITEM2, P0_ITEM3
and i also have a button on page zero. Now I want to make this button conditional
like only show the button only when all the three items are selected. For this I am having the below condition which is working perfectly fine.
Type: PL/SQL function returning boolean.
RETURN NVL(:P0_ITEM1,'%'||'null%') != '%'||'null%' AND
NVL(:P0_ITEM2,'%'||'null%') != '%'||'null%' AND
NVL(:P0_ITEM3,'%'||'null%') != '%'||'null%' ;Now I want to add one more condition to the button --
the condition is that, the buttton should be displayed only on the pages 1,2,3,4
so can anyone please help me out how do i change the code to include the additional condition.
thanks,
Orton
Edited by: orton607 on Jul 28, 2010 2:02 PM

Try:
Type: PL/SQL function returning boolean.
RETURN NVL(:P0_ITEM1,'%'||'null%') != '%'||'null%' AND
NVL(:P0_ITEM2,'%'||'null%') != '%'||'null%' AND
NVL(:P0_ITEM3,'%'||'null%') != '%'||'null%' AND
:app_page_id in (1, 2, 3, 4);http://download.oracle.com/docs/cd/E17556_01/doc/user.40/e15517/concept.htm#sthref156

Need help on coverting sql statement to NamedQueries

hi, all,
I have a problem on converting the following SQL statement returning last 10 records from an Oracle database.
The SQL statement is as followings:
select * from (select * from TABLE1 where ATT1 = 1 order by ATT2 desc) where rownum<11
However, how should I convert this statement into NamedQuery?
Thanks.

Will the following SQL return the same set of rows for you:
select * from TABLE1 where ATT1 = 1 order by ATT2 desc limit 1,10
If so, that query is a lot easier to convert.
I've never tried to convert a subquery into a NamedQuery. The problem is that you're not just converting to named query, but you're also changing from SQL to EJBQL, and they don't map directly even though the semantics are similar.

Group by sql statement is not sorted.

execut sql statement include group by clause in a oci program, the result is not sorted.
I don't know why..
in SqlPlus, same sql statement return sorted data.
SELECT A.SHOP_ID,A.RESALE_TYPE,
SUM(A.DEAL_AMT,0) DEAL_AMT
FROM SHOP_ACC A, CD_TAB C
WHERE A.RESALE_TYPE = C.CD(+)
AND C.GB = 'AB'
AND A.ACC_M = :s_AccMonth
AND DEAL_GB='FOD'
GROUP BY A.SHOP_ID,A.RESALE_TYPE
But, RESALE_TYPE is outer join on CD_TAB..
if remove outer join between CD_TAB and SHOP_ACC,
sql statement is return sorted result.
and if modify the column RESALE_TYPE like
RESALE_TYPE||']' or NVL(RESALE_TYPE,'AAA')
return sorted result..
please help..
thanks for your kind.

thank you.. for reply..
I knew that order by clause make to sort.
but, using group by clause alone in SQL statement, that return sorted results too.
I was found a fault that outer join table CD_TAB column of one is not symbloc "(+)" in SQL statement
SELECT A.SHOP_ID,A.RESALE_TYPE,
SUM(A.DEAL_AMT,0) DEAL_AMT
FROM SHOP_ACC A, CD_TAB C
WHERE A.RESALE_TYPE = C.CD(+)
AND C.GB = 'AB' <----------- AND C.GB(+) = 'AB'
AND A.ACC_M = :s_AccMonth
AND DEAL_GB='FOD'
GROUP BY A.SHOP_ID,A.RESALE_TYPE
I want to know that why in other application - such as SqlPlus or SqlGate and ..etc. - this fault was ignore.. but OCI application such as my application programs is not ignore.. and is not sorted..
thank you..

Precompiled SQL statement at client side ? (JDBC)

Hi,
Will Oracle support precompiled SQL statement for jdbc client ?
Thanks

A pre-compiled SQL statement on the client side makes absolutely no sense. Let's say the statement refers to system object id 1234 - the EMP table. But in the meantime the EMP table has been dropped and re-created as an index organised table and is now object id 7890.
What about issues like scope, cost-based optimisation, etc?
It honestly does not make the slightest sense to even want such a "pre-compiled client SQL" feature.
> hmm.... Is there anyway to return the compiled SQL
from database ?
Yes - that is exactly what a cursor handle is. You give the database a SQL statement. It parses that and returns a SQL (aka cursor) handle for you to use and re-use.
The typical (stateful) client would use the following template:
-- open a database connection (usually returns a connection/session handle)
hConnection = open DBconnection(params)
-- parse/prepare a SQL statement (returns a SQL/cursor handle)
hSQL = parseSQL( hConnection, 'INSERT INTO foo VALUES( :0, :1 )' )
-- reuse the SQL statement
while (Some_Condition)
loop
Some_Processing()
-- bind values to the SQL statement variables
SQLBind( hSQL, '0', var1)
SQLBind( hSQL, '1', var2)
-- execute the statement (it is not compiled or parsed again by the database)
ExecSQL( hSQL )
endloop

SQL statement to compare dates and return boolean (yes/no)

I am looking for a SQL statement that can compare 2 dates and return a boolean. 1 (yes) if date 1 is => date2-threshold or 0 (No) if date < date2-threshold
Ie
date1=20130603
threshold=2 days
date2=sysdate-threshold
if [ 20130603 > sysdate-$threshold ]
then
return 1
else
return 0
fi
Thanks to all that answer.

Assumming I want to get "date1" from some other table instead of from
dual will this syntax be valid
I was going to invoke another SQLPLUS from my shell script and pass it in
as a variable but if I can do it on one shot it would be better.
In addition, if "no rows" are found for date1 from the below query, would
I need code to handle that
with xx as
    select TO_DATE(last_date','yyyymmdd') date1, from dba_audit_table where ...;
     select TO_DATE('20130603','yyyymmdd') date1, sysdate date2 from dual;
Thanks to all who answer
[/code1]

Returning sql statement instead of values from database

hi am reading value from database but my problem is am get sql statement values instead of values in database
my code is
java:337)

There is no doubt: you get what you want:
return s_getValue;
bye
TPD

Which is better - SQL Statement in APEX or as a function returning a type?

Hi
I have a general question about best practices for APEX development.
If we have say a report region based on a SQL statement, is it better (from a performance perspective) to have the SQL statement defined in the region in APEX OR have the actual select statement executed in the backend and have the result set returned in a type to APEX?
As an example:
In APEX region
SELECT col1, col2, col3 FROM table_aOR
In APEX region
select col1, col2, col3 from TABLE(CAST(<my package>.<my proceduere > AS <my type >)) ;<my package>.<my proceduere > would obviously execute the statement
SELECT col1, col2, col3 FROM table_ausing dynamic SQL and return the results to APEX in thy type <my type>.
Apologies if this sounds to be a really stupid thing to ask.
Kind regards
Paul

Denes Kubicek wrote:
You should use a pipelined function only then when you can't use SQL. Otherwise SQL is the way to go.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
------------------------------------------------------------------------------thanks Denes... but does it matter if:
1. The SQL statement is actually defined in the APEX region
or
2: The select statement is stored in a packageD function and returned to APEX?
I seem to recall an article I read stating that it is best for all client applications to call stored procedures and functions rather than have SQL statement embedded in the actual application?
Kind regards
Paul

Apex 4.0 display image item :BLOB column returned by SQL statement

Hello
I'm creating an display image item in apex 4.0. The source is a BLOB column returned by SQL statement.
When I'm issuing an sql statement like this:
   select lado.blob_content
   from   large_documents      lado
   ,        large_doc_headers    ladh
   where lado.ladh_nr = ladh.nr
   more criteriait works fine.
When I create a function inside a package with the same query (in a cursor)
function get_image(some parameters in) return blob
Following in apex by:
select get_image(some parameters) from dualI get a
ORA-06502: PL/SQL: numeric or value error: character string buffer too smallAnybody any idea why this does not work?
Regards Erik

Hi Eric,
the environment assumes varchar2-output by default, which will be limited to 32767 characters and may have problems with binary formats. You could define a blob-variable to select the value into.
DECLARE
l_blob BLOB;
BEGIN
SELECT get_image(some parameters)
    INTO l_blob
    FROM dual;
END;
/If you expect the BLOB-Content to be text (you should consider CLOB then), you may use UTL_RAW.CAST_TO_VARCHAR2 to convert the content. If your object is larger than the maximum varchar2 size, or you want to convert BLOB to CLOB, you might be interested in some converter like described here: {message:id=559749}
Hope this is what you were searching for.
-Udo

SQL statement returning boolean?

Similar Messages

Maybe you are looking for