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Asked: 2026-05-10T19:47:31+00:00

We’re seeing the error message ORA-00936 Missing Expression for the following SQL: Note that

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We’re seeing the error message ORA-00936 Missing Expression for the following SQL:

Note that this is just a cut-down version of a much bigger SQL so rewriting it to a inner join or similar is not really in the scope of this:

This is the SQL that fails:

select (select count(*) from gt_roster where ROS_ROSTERPLAN_ID = RPL_ID) from gt_rosterplan where RPL_ID = 432065061

What I’ve tried: * Extracting the innermost SQL and substituting the ID from the outer SQL gives me the number 12. * Aliasing both the sub-query, and the count(*) individually and both at the same time does not change the outcome (ie. still an error)

What else do I need to look at?

The above are only tables, no views, RPL_ID is primary key of gt_rosterplan, and ROS_ROSTERPLAN_ID is a foreign key to this column, there is basically no magic or hidden information here.

Edit: In response to answer, no, you do not need the aliases here as the columns are uniquely named across the tables.

Solved: The problem was that the client was running the wrong client driver version, 9.2.0.1, and there are known problems with that version.

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1 Answer

  1. That should work, assuming the column names are not ambiguous (and even if they were that would lead to a different error). I ran an equivalent statement and got a result without error:

    SQL> select (select count(*) from emp2 where empdeptno = deptno)   2  from dept   3  where deptno=10   4  /  (SELECTCOUNT(*)FROMEMP2WHEREEMPDEPTNO=DEPTNO) ---------------------------------------------                                             3

    Googling it appears that there are or have been Oracle bugs leading to ORA-00936 errors – see this for example.

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