Question

When encountering the SQL error "ORA-00984: column not allowed here," what might be a potential cause of the issue? a) Incorrect column name in the SQL statement b) A missing 'FROM' clause in the SQL query c) Attempting to create a column with a reserved keyword d) Incompatibility between SQL versions

Answer 1

The ORA-00984 error occurs when a column name is inappropriately used in a SQL statement, particularly within INSERT or UPDATE operations where literal values are expected.

Step-by-step explanation:

The SQL error ORA-00984: column not allowed here typically indicates that there is an issue in the SQL statement where a column name is being used inappropriately. This error usually occurs in a data manipulation context, such as an INSERT or UPDATE statement, where literal values are expected and a column name has been provided instead, outside of a valid context. For instance, when inserting values, you should only specify the values for the corresponding columns and not use column names in the values part. Here are a few potential causes:

• Using a column name instead of a literal value in an INSERT statement.
• Incorrect syntax, such as including a column name where a literal value is expected, for example, in the SET clause of an UPDATE statement.

To resolve this error, it is important to revise the statement and ensure that only literal values are provided where expected, and that all syntax is correct.

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