hibernate/hibernate-orm · error · UnknownTableReferenceException

Unable to determine TableReference (`%s`) for `%s`

Error message

Unable to determine TableReference (`%s`) for `%s`

What it means

Error "Unable to determine TableReference (`%s`) for `%s`" thrown in hibernate/hibernate-orm.

Source

Thrown at hibernate-core/src/main/java/org/hibernate/sql/ast/tree/from/UnionTableReference.java:45

	public UnionTableReference(
			String unionTableExpression,
			String[] subclassTableSpaceExpressions,
			String identificationVariable,
			boolean isOptional) {
		super( unionTableExpression, identificationVariable, isOptional );

		this.subclassTableSpaceExpressions = subclassTableSpaceExpressions;
	}

	@Override
	public TableReference resolveTableReference(
			NavigablePath navigablePath,
			String tableExpression) {
		if ( hasTableExpression( tableExpression ) ) {
			return this;
		}

		throw new UnknownTableReferenceException(
				tableExpression,
				String.format(
						Locale.ROOT,
						"Unable to determine TableReference (`%s`) for `%s`",
						tableExpression,
						navigablePath
				)
		);
	}

	@Override
	public TableReference getTableReference(
			NavigablePath navigablePath,
			String tableExpression,
			boolean resolve) {
		if ( hasTableExpression( tableExpression ) ) {
			return this;
		}

View on GitHub (pinned to fad1729dce)

Solutions

1. The column reference qualifier does not match the union table reference. Verify qualification of columns selected from the union/entity using union subclass mappings.
2. If generated internally by Hibernate, report it as a Hibernate bug with the query and stack trace.

When it happens

Trigger: A column reference qualifier cannot be resolved against a union table reference.

Common situations: Querying a UNION subclass table-per-class mapping and qualifying a column with an alias not resolvable on the union table.

AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22). Data as JSON: /api/errors/be6d815c10ce4798. Report an issue: GitHub.