{"record":{"id":"b2c71c50ba99af4d","repo":"risingwavelabs/risingwave","slug":"resolve-qualified-name-error-0","errorCode":null,"errorMessage":"resolve qualified name error: {0}","messagePattern":"resolve qualified name error: (.+?)","errorType":"error_code","errorClass":"ResolveRegclassError","httpStatus":null,"severity":"error","filePath":"src/frontend/src/expr/function_impl/cast_regclass.rs","lineNumber":35,"sourceCode":"use risingwave_expr::{ExprError, capture_context, function};\nuse risingwave_sqlparser::parser::{Parser, ParserError};\nuse thiserror::Error;\nuse thiserror_ext::AsReport;\n\nuse super::context::{AUTH_CONTEXT, CATALOG_READER, DB_NAME, SEARCH_PATH};\nuse crate::Binder;\nuse crate::binder::ResolveQualifiedNameError;\nuse crate::catalog::root_catalog::SchemaPath;\nuse crate::catalog::{CatalogError, CatalogReader};\nuse crate::session::AuthContext;\n\n#[derive(Error, Debug)]\nenum ResolveRegclassError {\n    #[error(\"parse object name failed: {0}\")]\n    Parser(#[from] ParserError),\n    #[error(\"catalog error: {0}\")]\n    Catalog(#[from] CatalogError),\n    #[error(\"resolve qualified name error: {0}\")]\n    ResolveQualifiedName(#[from] ResolveQualifiedNameError),\n}\n\nimpl From<ResolveRegclassError> for ExprError {\n    fn from(e: ResolveRegclassError) -> Self {\n        match e {\n            ResolveRegclassError::Parser(e) => ExprError::Parse(e.to_report_string().into()),\n            ResolveRegclassError::Catalog(e) => ExprError::InvalidParam {\n                name: \"name\",\n                reason: e.to_report_string().into(),\n            },\n            ResolveRegclassError::ResolveQualifiedName(e) => ExprError::InvalidParam {\n                name: \"name\",\n                reason: e.to_report_string().into(),\n            },\n        }\n    }\n}","sourceCodeStart":17,"sourceCodeEnd":53,"githubUrl":"https://github.com/risingwavelabs/risingwave/blob/6469eb736d691e8e9b8a419a57edd6429ca77417/src/frontend/src/expr/function_impl/cast_regclass.rs#L17-L53","documentation":"This error is produced when parsing or resolving a qualified object name fails inside the regclass-style cast implementation. `ResolveRegclassError::ResolveQualifiedName` wraps `ResolveQualifiedNameError` via `#[from]` and surfaces as \"resolve qualified name error: {0}\". It indicates the identifier string (e.g. `'schema.table'`) could not be split/qualified into catalog components such as database, schema, and object name.","triggerScenarios":"Passing a malformed or unresolvable qualified name to expressions that resolve names to catalog ids, e.g. `'foo.bar.baz.qux'::regclass` with too many parts, illegal identifier characters, or a name whose schema component does not resolve in the current database.","commonSituations":"Quoting mistakes (mixing single and double quotes), extra dots in the identifier, using an unquoted reserved word as a schema/table name, or copying a fully qualified name including the database prefix from another system where such qualification is valid but is not here.","solutions":["Fix the identifier syntax: quote each part separately, e.g. `nextval('\"my schema\".my_seq')` instead of mixing dots and quotes incorrectly.","Remove extra components — qualify with at most `[schema].[object]`, not `[database].[schema].[object]`.","Verify the schema part exists (`SHOW SCHEMAS`) and that the search_path matches expectations.","If the name came from application code, log and validate the identifier string before interpolating it into SQL."],"exampleFix":"-- before\nSELECT 'mydb.public.my_seq'::regclass;\n-- after\nSELECT 'public.my_seq'::regclass;","handlingStrategy":"validation","validationCode":"// validate identifier before passing it to name resolution\nfn is_valid_qualified_name(s: &str) -> bool {\n    let parts: Vec<&str> = s.split('.').collect();\n    (1..=2).contains(&parts.len()) && parts.iter().all(|p| !p.is_empty())\n}","typeGuard":null,"tryCatchPattern":"match try_resolve_qualified_name(input) {\n    Ok(qn) => proceed(qn),\n    Err(ExprError::ResolveQualifiedName(e)) => Err(user_facing(\"invalid object name: {input}\")),\n    Err(e) => Err(e),\n}","preventionTips":["Split qualified names into components in application code and pass them as separate parameters where the API allows.","Use double-quoted identifiers for any name containing special characters or spaces.","Never include the database name in object references in SQL.","Add a unit test for identifier parsing of edge cases (dots, quotes, unicode)."],"tags":["sql","identifier","name-resolution","risingwave"],"backgroundTag":"invalid-identifier-format","analyzedSha":"6469eb736d691e8e9b8a419a57edd6429ca77417","analyzedAt":"2026-09-11T21:06:21.487Z","contentChangedAt":"2026-09-11T21:06:21.487Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}