Question: When running a JOIN query in pgAdmin, why might the error column reference ' id ' is ambiguous be displayed? The id column

When running a JOIN query in pgAdmin, why might the error "column reference 'id' is ambiguous" be displayed?
The "id" column has different data types in the two tables being joined.
The column "id" exists in both tables being joined and no table alias has been used to distinguish between them.
The query uses the USING clause instead of the ON clause to specify the join condition.
The "id" column in one or both tables being joined has been incorrectly defined or is missing.

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