Dynamic SQL in Triggers

Does anyone know if it is possible to have dynamic SQL statements
within a trigger.
for example,
sql_str := 'insert into log_'||table_name||'values
(''A'',:new.descr)';
execute immediate sql_str;
I kept on getting an internal error as follows
ORA-00600: internal error code, arguments: [15212], [3], [], [],
ORA-06512: at "CDC.TG_BI_COMPANY_C", line 30
ORA-04088: error during execution of trigger 'CDC.TG_BI_COMPANY_C'
Thanks in advance

Hi,
This is a bug i think ... a long shot but let us see what the
people at oracle have to say for this.... I Am posting it on
metalink....
Here is the corrected code...
create or replace trigger atrig
before insert on A
For Each Row
Declare
a number;
begin
execute immediate 'insert into ' || 'a_log values(:1)'
using :new.a;
end;
This works....
Always use bind Variables in Dynamic SQl ... Good Practice ....
Regards,
Ganesh R

Similar Messages

Using dynamic sql in triggers with :OLD values

i need to record all deleted rows from an entire schema in a single table. for that matter i created a function that receives a table name and generate an insert command according to it's primary key columns. i call this function in the table triggers. in order to insert the old values before the delete i use :OLD with "execute immediate" as followed :
create or replace trigger trg_some_tbl_bd
before delete on some_tbl
for each row is
declare
v_sql varchar2(4000);
begin
v_sql := generate_insert_command('some_table');
execute immediate v_sql;
end;
the return value from "generate_insert_command" function is the string:
insert into deleted_table (table_name , date , pk1 , pk2) values
('some_table' , sysdate , :OLD.pk1 , :OLD.pk2)
the execute immediate command notice the :OLD and looks for bind variables.
i need to know i can i bypass that. i tried looking for escape characters but couldent find any...
i would appriciate any help , it's kynda urgent
Thanks !

I don't believe this is going to work. Even if you could get around the fact that :old looks like a bind variable, the :old values are not visible to the dynamic SQL statement, they're like local variables in that respect.
If you wanted to pass old values in, those values would have to be passed in as bind variables, i.e.
EXECUTE IMMEDIATE v_sql USING :old.pk1, :old.pk2which defeats the purpose of using dynamic SQL.
Since you have to create a trigger for each table, I don't see why you would bother with dynamic SQL inside the trigger-- your table structure is fixed when the trigger is created. You could write dynamic SQL that generated the triggers in the first place, but the code inside the trigger should be dynamic.
As an aside, you realize that logging every audit record into a single table creates rather massive contention issues, right? And have you considered how painful it is to query this sort of table? Have you considered other options for maintaining history like Workspace Manager? Or at least separate history tables for each table?
Justin

Using dynamic SQL (native) in triggers.

Hi All:
As a part of client requirement, I need to capture all column data from tables when rows get deleted. I am using a single table to capture deleted column data (not concatenated but one column data per row).
I am using native dynamic SQL as I need to get the most recent column list for any table from USER_TAB_COLUMNS table. Somehow, Oracle does not allow me to use :old.xxx syntax when doing a EXECUTE IMMEDIATE insert_statment;
Can't I use native dynamic SQL in triggers to refer to :old and :new values?
Thanks,
Sankar.

No, you cannot use NDS to refer to the :old values. You can use the data dictionary to automate the writing of the audit trigger code itself though. Hi Todd,
Can you please explain your comment about using the data dictionary to automate writing the audit trigger code..
Thanks.

Executing dynamic SQL in trigger

Hi !
I just wanted to ask the community if it is ok using dynamic SQL
with execute immediate in triggers, like:
if (deleting or updating)
and nvl(:old.col_val, 0) != 0
then
/* Update */
sSql :=
'update TMP_STAT_TEST ' ||
'set col_val_' || to_char(:old.col_id) || ' = col_val_' ||
to_char(:old.col_id) || ' - :1 ';
execute immediate sSql using :old.col_val;
end if;
All dyn SQL inside the trigger does not reference the triggered
table, so I will not get a mutating trigger.
Thanks for your feedback.
Stefan.

Hi Andrew !
I have a "master" table with date and amount and some more
columns. I have a statistic table which must get updated
accordingly each time the master table is changed (ins, upd,
del). In this stats table there a cols like "sum_2000, sum_2001"
etc. The dynamic statement depends on date to figure out the
column name for the sum_yyyy cols, and amount will be
added/subtracted. Of course there is a check that the trigger
cannot handle when the year of the date is smaller than 2000 or
greater than 2009.
That's why I want to use dyn SQL.
Stefan.

Why an "ORA-01006: bind variable does not exist" error when no dynamic SQL?

Hi all,
While running PL/SQL in SQL Developer 3.2.09, I got the following error after adding a section of code. Note that nothing I'm doing has anything to do with dynamic SQL (which is what 01006 is supposedly about).
Error report:
ORA-01006: bind variable does not exist
01006. 00000 - "bind variable does not exist"
*Cause:
*Action:
After commenting out the new chunk of code that caused the error, the error persisted.
After deleting the new code, the error went away.
What the heck!?!? If you have any ideas, please lay 'em on me.
Thanks so much,
Kim
P.S. It's a few hundred lines of code, so I didn't append it to this post and I don't see how to attach a file.

Let's review a few facts:
1. You post a question in the sql developer forum that has no apparent relation to sql developer. You could confirm this by doing the test using sql*plus or some other tool.
2. You provide NO information about what database you are even using. The only clue is an ORA -xxx message that means SOME version of Oracle is involved.
3. You provide NO information about what the four digit version of Oracle DB is being used.
4. You provide NO information about what the code in general or what that specific section of the code is even doing. The code could be doing literally anything that Oracle is capable of doing.
That's a bit like calling a mechanic you don't know, telling them your car is making a funny noise and asking them what the problem with your car is.
>
While running PL/SQL in SQL Developer 3.2.09, I got the following error after adding a section of code. Note that nothing I'm doing has anything to do with dynamic SQL (which is what 01006 is supposedly about).
Error report:
ORA-01006: bind variable does not exist
01006. 00000 - "bind variable does not exist"
*Cause:
*Action:
The error gives no indication of where the error occurred in the code.
>
Your first clue that your troubleshooting method is seriously flawed is when you make statements that aren't supported by any evidence at all but appear to be nothing but your opinion.
Your second clue is when those statements appear to directly contradict what Oracle is telling you.
I'm talking about these two statements you make; which you state as if they were universal truths
>
nothing I'm doing has anything to do with dynamic SQL
(which is what 01006 is supposedly about).
>
If thoe were true then your 'unstated' conclusion appears to be that Oracle is wrong in saying 'bind variable does not exist'
Sorry - but I would place my money on Oracle.
I'm sure the above may sound harsh - it is intended to be. My four major rules (there are more) when troubleshooting Oracle problems.
1. Assume that Oracle is CORRECT when it tells you there is a problem.
2. Assume that you are WRONG if your opinion conflicts with what Oracle is telling you - see rule #1.
3. Don't make ANY other assumptions. You can form hypotheses but don't state them as facts until they are proven.
4. Your 'opinion' is only useful to the extent that it can help you form meaningful hypotheses - see rule #3.
>
To reiterate, there is no dynamic SQL in the code.
>
To reiterate - if, as you state, that error relates to dynamic SQL and bind variables then it can not be disputed that:
ORACLE DOESN'T AGREE WITH YOU!
So let's try it my way and hypothesize that Oracle is correct (see rule #1 above).
Then by definition this statement by Oracle is correct
>
ORA-01006: bind variable does not exist
>
And that should immediately raise this question:
1. where might there be a bind variable that does not exist?
which leads to a prerequisite question:
2. where are ALL of the bind variables that might be being used?
Question #2 is where you need to start your search. Here are at least five possibilities (there are more)
1. your code - this should be easiest to check and you state that your 'anonymous' block does not have any.
2. a table trigger - triggers that use the :NEW, :OLD or :PARENT pseudocolumns. Those psuedocolumns are BIND variables and the trigger code that uses them is, by definition, dynamic sql.
3. a pl/sql package/function/procedure - any of these might be being called from trigger code or a view that is involved in the transaction. Any of these could take a parameter and/or use bind variables and cause your problem if that bind variable does 'not exist'.
4. a functional index - can also trigger code from #3 above
5. an audit trigger that logs the audit activity that your user or your code is performing. This code could be trying to use a SYS_CONTEXT environment variable that has not been created and cause a 'bind variable does not exist' error.
See rule #1 - Oracle is CORRECT. Until you have identified and examined ALL of the code (not just your anonymous block) being executed and ruled it out you should continue with the hypotheses that Oracle is CORRECT.
In the (extremely) unlikely event that you can show that Oracle is NOT correct you should file a SOR with Oracle.

NULL and dynamic SQL

If table testrh2 has the following columns and data
col1 --> NULL
col2 --> 2
and table testrh has the following columsn and data
col1 --> NULL
How could I write a dynamic SQL statement to join on the nulls? I've written the following block as a starting point.
declare
cursor c1 is select col1 from isis.testrh;
lval varchar2(1000);
lval2 varchar2(1000);
begin
for r1 in c1 loop
lval := 'select col2 from isis.testrh2 where col1 = '||r1.col1;
execute immediate lval into lval2;
dbms_output.put_line(lval2);
end loop;
end;

You can't compare null values with '=' in Oracle SQL.
Null can only be compared with <column> is null .
You can see it when you try these two queries:
select * from dual where null is null; -- you will see one row
select * from dual where null=null; -- you will see no rowsThat's why you have to write something like
(<column1>=<column1> or (<column1> is null and <column2> is null))This should also work with null:
decode(<column1>,<column2>,1,0)=1By the way, why do you use dynamic sql?
lval := 'select col2 from isis.testrh2 where col1 = '||r1.col1;
I think you could replace your two lines ( lval:= ... AND execute immediate) by this:
begin
select col2
into lval
from isis.testrh2
where decode(col1,r1.col1,1,0)=1;
dbms_output.put_line('lval='||lval);
exception
when no_data_found then
dbms_output.put_line('no data found'); -- or whatever you want
end;Edited by: hartmutm on 02.10.2010 23:54

How to rename C00n generic column names in a Dynamic SQL report

I have a an interface whereby the user can select 1 to 60 (upper limit) columns out of 90 possible columns (using a shuttle) from one table before running a report.
To construct the SQL that will eventually execute, I'm using a "PLSQL function body returning SQL query" with dynamic SQL. The only problem is that I have to use "Generic Column Names" option to be able to compile the code and end up with c001 to c060 as the column names.
How can I use the names of the selected columns as the report headings rather than c001, C002... etc?
I do not know beforehand which columns, or how many columns or the order of the selected columns.
I know Denes K has a demo called Pick Columns but I can't access his code. I have a hunch though that he may be just using conditions to hide/show the apropriate columns.
thanks in advance
PaulP

Hi Paul
I would change the Heading Type in the Report Details screen to PLSQL and use the shuttle item to return the column values. e.g.
RETURN :p1_shuttle;
I'm assuming the shuttle already has a colon separated list of the column headings in the correct order?
I hope that helps
Shunt

Unique id in dynamic sql

hi all,
I am using oracle 10g version.
I have one table but i do not have any unique id to identify the row.
I want to have a unique id temporarily in my select statement (dynamic sql) in a stored procedure while fetching the results, so that i can return my results along with the unique id through the cursor.
Please help me...
Thanks in advance to all...

it depends if you have a more than one column that you can uniquely identify and put them together by concatenating you can have a unique id. or a rowid might help you to temporarily identify a row.
SQL> select e.* from employee e;
FNAME           MINIT LNAME           SSN       BDATE       ADDRESS                        SEX       SALARY SUPERSSN         DNO
John            B     Smith           123456789 09-Jan-1965 731 fONDREN, hOUSTON, TX       M       30000.00 333445555          5
Frankin         T     Wong            333445555 08-Dec-1955 683 Voss, Houston,Tx           M       40000.00 888665555          5
Alicia          J     Zelaya          999887777 19-Jul-1968 3321Castle, Spring, TX         F       25000.00 987654321          4
Jennifer        S     Wallace         987654321 20-Jun-2041 291 Berry, Bellaire, TX        F       43000.00 888665555          4
Ramesh          K     Narayan         666884444 15-Sep-1962 975 Fire Oak, Humble, TX       F       38000.00 333445555          5
Joyce           A     English         453453453 31-Jul-1972 5631 Rice,Houston,TX           F       25000.00 333445555          5
Ahmad           V     Jabbar          987987987 29-Mar-1969 980 Dallas,Houston, TX         M       25000.00 987654321          4
James           E     Borg            888665555 10-Nov-2037 450 Stone, Houston, TX         M       55000.00                    1
8 rows selected
SQL> select rowid, e.* from employee e;
ROWID              FNAME           MINIT LNAME           SSN       BDATE       ADDRESS                        SEX       SALARY SUPERSSN         DNO
AAD8pbAAJAAAJ4fAAA John            B     Smith           123456789 09-Jan-1965 731 fONDREN, hOUSTON, TX       M       30000.00 333445555          5
AAD8pbAAJAAAJ4fAAB Frankin         T     Wong            333445555 08-Dec-1955 683 Voss, Houston,Tx           M       40000.00 888665555          5
AAD8pbAAJAAAJ4fAAC Alicia          J     Zelaya          999887777 19-Jul-1968 3321Castle, Spring, TX         F       25000.00 987654321          4
AAD8pbAAJAAAJ4fAAD Jennifer        S     Wallace         987654321 20-Jun-2041 291 Berry, Bellaire, TX        F       43000.00 888665555          4
AAD8pbAAJAAAJ4fAAE Ramesh          K     Narayan         666884444 15-Sep-1962 975 Fire Oak, Humble, TX       F       38000.00 333445555          5
AAD8pbAAJAAAJ4fAAF Joyce           A     English         453453453 31-Jul-1972 5631 Rice,Houston,TX           F       25000.00 333445555          5
AAD8pbAAJAAAJ4fAAG Ahmad           V     Jabbar          987987987 29-Mar-1969 980 Dallas,Houston, TX         M       25000.00 987654321          4
AAD8pbAAJAAAJ4fAAH James           E     Borg            888665555 10-Nov-2037 450 Stone, Houston, TX         M       55000.00                    1
8 rows selected
SQL>

Can we use Dynamic SQL in Oracle Reports ?

Hi ,
Can we use Dynamic SQL in Oracle Reports ?
If yes please give some examples .
Thanx
srini

I believe the built-in package SRW.Do_Sql is what you are looking for
Example from the document:
/* Suppose you want to create a "table of contents" by getting the
** first character of a columns value, and page number on which its
** field fires to print. Assume that you want to put the "table of
contents"
** into a table named SHIP. You could write the following construct:
DECLARE
PAGE_NO NUMBER;
PAGE_FOR INDEX NUMBER;
SORT_CHAR CHAR(1);
CMD_LINE CHAR(200);
BEGIN
SORT_CHAR := :SORT_NAME ;
IF :CALLED = Y THEN
     SRW.GET_PAGE_NUM(PAGE_FOR_INDEX);
     SRW.USER_EXIT(RWECOP PAGE_FOR_INDEX
     P_START_PAGENO);
     SRW.MESSAGE(2,TO_CHAR(:P_START_PAGENO));
END IF;
SRW.GET_PAGE_NUM(PAGE_NO);
CMD_LINE := INSERT INTO SHIP VALUES
                      (||SORT_CHAR||,||TO_CHAR(PAGE_NO)||);
SRW.MESSAGE(2,CMD_LINE);
SRW.DO_SQL(CMD_LINE);
COMMIT;
EXCEPTION
WHEN DUP_VAL_ON_INDEX THEN
        NULL;
WHEN SRW.DO_SQL_FAILURE THEN
        SRW.MESSAGE(1,FAILED TO INSERT ROW INTO SHIP TABLE);
WHEN OTHERS THEN
       COMMIT;
END;

How to mention numbers in array while creating dynamic sql

Hi,
I am creating a dynamic sql and in that I am selecting some rows from the table and storing it into the array.
I am firing this sql statement within trigger.
But i got the error:
ORA-06502: PL/SQL: numeric or value error: character to number conversion error
I took the same sql statement (the one which was created dynamically) in the procedure and tried to run it but it gave me the same error.
=========================================================
Begin
type NewValueArray is table of varchar2(4000);
nVal_Array NewValueArray;
Begin
Select
DISCOVERYHOSTNAME,
DISCOVERYMACPRIMARYPHYSICAL,
DISCOVERYSERIALNUMBER
into
nVal_Array(1),
nVal_Array(2),
nVal_Array(3)
from ALT_42_Consolidated
where rowid = 'AAEWNEABXAAAAkxAAA';
EXCEPTION
WHEN others THEN
Raise;
End;
=========================================================
I tried using to_number but still the same error.
Can some body please inform me where I am goofing.
Thanks!

I got a different error, but you need to initialise your nval_array and make sure it can hold three values. The following should work:
declare
type NewValueArray is table of varchar2(4000);
nVal_Array NewValueArray := NewValueArray();
Begin
nval_array.extend(3);
Select col1, col2, col3
into nVal_Array(1), nVal_Array(2), nVal_Array(3)
from tab1
where rowid = 'AAAGJZAAGAAAAAWAAV';
EXCEPTION
WHEN others THEN
Raise;
End;
/

Dynamic SQL and MERGE

Hi all,
I'm under 10G r1
I want to execute a dynamic SQL with merge in it
when I try with insert ,update it works
but I just want to use merge if possible
this is the code
CREATE OR REPLACE
PROCEDURE I_COLUMN_CDS_FIXINGS
v_ticker VARCHAR2,
v_date DATE,
v_tenor VARCHAR2,
v_bid NUMBER,
v_ask NUMBER)
AS
l_column VARCHAR2(80);
v_column_bid VARCHAR2(80);
v_column_ask VARCHAR2(80);
v_source VARCHAR2(60) :='CMAN@BBG';
v_gen_order pls_integer;
BEGIN
SELECT 'CDS_SPREAD_'
||v_TENOR
||'_BID'
INTO v_column_bid
FROM dual;
SELECT 'CDS_SPREAD_'
||v_TENOR
||'_ASK'
INTO v_column_ask
FROM dual;
dbms_output.put_line(v_ticker||' '||v_column_ask||' '||v_column_bid||' '||v_bid|| ' '||v_ask||' '||v_date);
EXECUTE immediate 'MERGE into CDS_FIXINGS C
using ( select v_ticker,'
||v_column_bid
||','
||v_column_ask
||',trunc(v_date) info_date ,v_bid,v_ask from dual ) B
on (C.cds_ticker=b.v_ticker and c.info_date=b.info_date)
WHEN MATCHED THEN
update set '||v_column_bid||'=:1,'||v_column_ask||'=:2 using v_bid,v_ask
WHEN NOT MATCHED THEN
INSERT
CDS_TICKER ,
INFO_DATE ,
'||v_column_bid||' ,
'||v_column_ask||' ,
SOURCE
VALUES (:1, :2,:3,:4,:5) ' using v_ticker,
v_date ,
v_bid ,
v_ask ,
v_source
---EXCEPTION
---when others then raise;
end;
when I launch hte procedure
exec i_column_cds_fixings('TEST',trunc(sysdate-1),'8Y',4232.01,4234.02);
I get
ERROR at line 1:
ORA-00933: SQL command not properly ended
ORA-06512: at "OWNER_HISTO.I_COLUMN_CDS_FIXINGS", line 26
ORA-06512: at line 1
How can I deal with this
Thanks
babata
I get

Sorry
this is formatted one
REATE OR REPLACE PROCEDURE i_Column_cds_FixIngs
(v_Ticker VARCHAR2,
v_Date DATE,
v_Tenor VARCHAR2,
v_Bid NUMBER,
v_Ask NUMBER)
AS
l_Column VARCHAR2(80);
v_Column_Bid VARCHAR2(80);
v_Column_Ask VARCHAR2(80);
v_Source VARCHAR2(60) := 'CMAN@BBG';
v_gen_Order PLS_INTEGER;
BEGIN
SELECT 'CDS_SPREAD_'
||v_Tenor
||'_BID'
INTO v_Column_Bid
FROM Dual;
SELECT 'CDS_SPREAD_'
||v_Tenor
||'_ASK'
INTO v_Column_Ask
FROM Dual;
dbms_Output.Put_Line(v_Ticker
||' '
||v_Column_Ask
||' '
||v_Column_Bid
||' '
||v_Bid
||' '
||v_Ask
||' '
||v_Date);
EXECUTE IMMEDIATE 'MERGE into CDS_FIXINGS C
using ( select v_ticker,'
||v_Column_Bid
||','
||v_Column_Ask
||',trunc(v_date) info_date ,v_bid,v_ask from dual ) B
on (C.cds_ticker=b.v_ticker and c.info_date=b.info_date)
WHEN MATCHED THEN
update set '
||v_Column_Bid
||'=:1,'
||v_Column_Ask
||'=:2 USING v_bid,v_ask
WHEN NOT MATCHED THEN
INSERT
CDS_TICKER ,
INFO_DATE ,
||v_Column_Bid
||' ,
||v_Column_Ask
||' ,
SOURCE
VALUES
:1,
:2,
:3,
:4,
:5
USING v_Ticker,v_Date,v_Bid,v_Ask,v_Source;
---EXCEPTION
---when others then raise;
END;
/

Dynamic sql and cursors

We are running an oracle sql procedure that uses a LOT of dynamic sql. We are using a 3rd party package (SQR) as a sort of shell to run the sql procedure. The 3rd party package passes to us an oracle error. This error says, in effect, that there are no inactive database cursors available and that the sql program is too large to process. We conclude from this that we must increase one or more of the cursor parameters in init.ora (v$parameters). Is this the correct assumption? If not, does anyone know what we can do? We'd prefer not to break up the sql procedure into smaller pieces.

increase the parameter for open cursors.
check, wether all cursors in your programs are closed in time, or if you are using ref cursors from front-ends (e.g. Java JDBC) that this front-ends close these ref cursors , too.
If you want to decrease the size of procedures get rid of comments, superfluos spaces, tabs, etc.
keep a commented version outside vor documentation purposes.
Hope thsi helps

Dynamic SQL and 255 bytes per line limit

I would like to create a Dynamic SQL statement that is longer than 255 bytes. What do I need to do to embed a carriage return or something so that the resultant string is broken up into multiple lines?

Please ignore. This was a stupid question!

Dynamic SQL and GRANT CREATE ANY TABLE

hi gurus,
i have a dynamic SQL in a procedure where a table will be created from an existing table without data.
strSQL:='create table ' || strTemp || ' as select * from ' || strArc || ' where 1=2';
execute immediate strSQL;
without GRANT CREATE ANY TABLE for the user, *"ORA-01031: insufficient privileges"* error during execution.
Is there a way to tackle this issue without providing GRANT CREATE ANY TABLE privilige?
many thanks,
Charles

ravikumar.sv wrote:
The problem is not because of dynamic sql...It probably has something to do with dynamic SQL or, more accurately, dynamic SQL within a stored procedure.
From a SQL*Plus command prompt, you can create a table if your account has the CREATE TABLE privilege either granted directly to it or granted to a role that has been granted to your account. Most people probably have the CREATE TABLE privilege through a role (hopefully a custom "developer role" that has whatever privileges you grant to users that will own objects but potentially through the default RESOURCE role). That is not sufficient to create tables dynamically via a definer's rights stored procedure. Only privileges that are granted directly to the user, not those granted via a role, are visible in that case.
I expect that the DBAs are granting the CREATE ANY TABLE privilege directly to the account in question rather than through whatever role(s) are being used which is why that appears to solve the problem.
Justin

Dynamic SQL and IN CLAUSE from Pro C code

Hi Guys,
Tyring to embed sql in Pro C. Here I don't know in hand how many items will be there in the IN Clause of my dynamic sql. Tried this with a loop and then adding actual values to the stement and then executing it. This worked but as this hard coding makes it literal sql and hence hampers performance. Can any one help me with how to put bind variables where we don't know how many of them will be there in a dynamic sql.
Thanks,

Dynamic SQL supports user defined types, try passing a collection and using TABLE(CAST(collection)) in the SQL statement.
In the current approach (creating IN clause at runtime) keep in mind that in a IN clause you can put a maximum of 255 elements...
Max

Dynamic SQL in Triggers

Similar Messages

Maybe you are looking for