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Chris Saxon

Thanks for the question, Aryan.

Asked: August 10, 2020 - 10:49 pm UTC

Last updated: August 11, 2020 - 4:39 pm UTC

Version: Oracle 12c

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You Asked

I am trying to get the currval of all the user sequences in the schema. When I run the below sql it gives me invalid sql statement.
I am not sure if the below is the right way to achieve it. Please advise.
Assumption: The current value of the sequences are already set in the session.

set serveroutput on;
declare
sq number;
sqnm varchar2(50); 
stmt varchar2(1000);

cursor sqnc is (select sequence_name from user_sequences);
begin
    for row in sqnc loop
    sqnm := row.sequence_name;
    stmt := 'SELECT' || sqnm ||'.currval into' || sq || 'from dual';
    execute immediate stmt;
   dbms_output_put_line(sqnm || ' ' ||sq);
    end loop;
end;


and we said...

select ... into ... is a PL/SQL construct.

With execute immediate you're running SQL The into clause is part of this statement:

execute immediate stmt
  into ...;


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Comments

Aryan, August 11, 2020 - 2:21 pm UTC

I changed the line to
stmt := 'SELECT' || sqnm ||'.currval from dual';
execute immediate stmt into sq;

I am still getting the invalid SQL statement error.
Also, when I tried to pass a sequence name using sqnm it gives the same error.
Kindly advise .
Chris Saxon
August 11, 2020 - 2:36 pm UTC

Look very carefully at the SQL statement you're generating. Log it somewhere and I'm sure the answer will reveal itself.

Found the issue with my stmt

Aryan, August 11, 2020 - 3:07 pm UTC

Thanks Chris for the solution. It worked
Chris Saxon
August 11, 2020 - 4:39 pm UTC

Great :)

A reader, August 11, 2020 - 4:03 pm UTC


A reader, August 11, 2020 - 4:04 pm UTC


A reader, August 11, 2020 - 4:04 pm UTC


A reader, August 11, 2020 - 4:04 pm UTC


A reader, August 11, 2020 - 4:04 pm UTC


A reader, August 11, 2020 - 4:04 pm UTC


A reader, August 11, 2020 - 4:05 pm UTC


A reader, August 11, 2020 - 4:05 pm UTC


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