{"record":{"id":"d134615f8f4dae11","repo":"hibernate/hibernate-orm","slug":"can-t-emulate-on-empty-clause-on-postgresql","errorCode":null,"errorMessage":"Can't emulate on empty clause on PostgreSQL","messagePattern":"Can't emulate on empty clause on PostgreSQL","errorType":"exception","errorClass":"QueryException","httpStatus":null,"severity":"error","filePath":"hibernate-core/src/main/java/org/hibernate/dialect/function/json/PostgreSQLJsonQueryFunction.java","lineNumber":44,"sourceCode":" */\npublic class PostgreSQLJsonQueryFunction extends JsonQueryFunction {\n\n\tpublic PostgreSQLJsonQueryFunction(TypeConfiguration typeConfiguration) {\n\t\tsuper( typeConfiguration, true, true );\n\t}\n\n\t@Override\n\tprotected void render(\n\t\t\tSqlAppender sqlAppender,\n\t\t\tJsonQueryArguments arguments,\n\t\t\tReturnableType<?> returnType,\n\t\t\tSqlAstTranslator<?> walker) {\n\t\t// jsonb_path_query functions error by default\n\t\tif ( arguments.errorBehavior() != null && arguments.errorBehavior() != JsonQueryErrorBehavior.ERROR ) {\n\t\t\tthrow new QueryException( \"Can't emulate on error clause on PostgreSQL\" );\n\t\t}\n\t\tif ( arguments.emptyBehavior() != null && arguments.emptyBehavior() != JsonQueryEmptyBehavior.NULL ) {\n\t\t\tthrow new QueryException( \"Can't emulate on empty clause on PostgreSQL\" );\n\t\t}\n\n\t\tappendJsonQuery(\n\t\t\t\tsqlAppender,\n\t\t\t\targuments.jsonDocument(),\n\t\t\t\targuments.jsonPath(),\n\t\t\t\targuments.isJsonType(),\n\t\t\t\targuments.wrapMode(),\n\t\t\t\targuments.passingClause(),\n\t\t\t\twalker\n\t\t);\n\t}\n\n\tstatic void appendJsonQuery(SqlAppender sqlAppender, Expression jsonDocument, SqlAstNode jsonPath, boolean isJsonType, JsonQueryWrapMode wrapMode, @Nullable JsonPathPassingClause passingClause, SqlAstTranslator<?> walker) {\n\t\tif ( wrapMode == JsonQueryWrapMode.WITH_WRAPPER ) {\n\t\t\tsqlAppender.appendSql( \"jsonb_path_query_array(\" );\n\t\t}\n\t\telse if ( wrapMode == JsonQueryWrapMode.WITH_CONDITIONAL_WRAPPER ) {","sourceCodeStart":26,"sourceCodeEnd":62,"githubUrl":"https://github.com/hibernate/hibernate-orm/blob/fad1729dce015f908198d57a8d80274a30f905a5/hibernate-core/src/main/java/org/hibernate/dialect/function/json/PostgreSQLJsonQueryFunction.java#L26-L62","documentation":"Error \"Can't emulate on empty clause on PostgreSQL\" thrown in hibernate/hibernate-orm.","triggerScenarios":"Triggered when the application calls a Hibernate dialect feature that the configured database dialect cannot provide: Can't emulate on empty clause on PostgreSQL.","commonSituations":"Common when running against a database whose dialect lacks this capability, when a mapping or HQL/Criteria query requests unsupported functionality, or when the wrong dialect is configured for the database in use. Error: Can't emulate on empty clause on PostgreSQL.","solutions":["Remove the ON EMPTY clause for PostgreSQL."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"fad1729dce015f908198d57a8d80274a30f905a5","analyzedAt":"2026-08-22T04:13:57.527Z","schemaVersion":2},"datasetVersion":"2026-08-22T09:17:25.309Z"}