Top "Ora-00904" questions

ORA-00904: invalid identifier

I tried to write the following inner join query using an Oracle database: SELECT Employee.EMPLID as EmpID, Employee.FIRST_…

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How to use BOOLEAN type in SELECT statement

I have a PL/SQL function with BOOLEAN in parameter: function get_something(name in varchar2, ignore_notfound in boolean); …

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Why do I have ORA-00904 even when the column is present?

I see an error while executing hibernate sql query. java.sql.SQLException: ORA-00904: "table_name"."column_name": invalid identifier When …

oracle oracle10g ora-00904

Using an Alias in a WHERE clause

I have a query which is meant to show me any rows in table A which have not been updated …

sql oracle alias decode ora-00904

Using 'case expression column' in where clause

SELECT ename , job , CASE deptno WHEN 10 THEN 'ACCOUNTS' WHEN 20 THEN 'SALES' ELSE 'UNKNOWN' END AS department FROM emp /* !!! */ WHERE department = …

sql oracle oracle10g ora-00904

"date" as a column name

I have a table called calendars. One of its columns is named 'date' When I want to select the date …

database oracle database-design ora-00904 ora-01747

Oracle show all employees with greater than average salary of their department

I am writing a query to find employees who earn greater than the average salary within their department. I need …

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SQL Error: ORA-00904: : invalid identifier

I am an SQL rookie and I would very much appreciate some assistance on this rather basic issue. alter table …

sql ora-00904

Oracle subquery does not see the variable from the outer block 2 levels up

I'd like to get in one query a post and the first comment associated with the post. Here is how …

sql oracle ora-00904

SQL query using a case statement within the group by fields

I have a complex query that joins different tables to get the count. There are a few fields to group …

sql oracle ora-00904