{"record":{"id":"097a25798d70ee9d","repo":"SeaQL/sea-orm","slug":"failed-to-get-unsigned-big-integer-097a25","errorCode":null,"errorMessage":"Failed to get unsigned big integer","messagePattern":"Failed to get unsigned big integer","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"src/driver/sqlx_mysql.rs","lineNumber":413,"sourceCode":"                    match c.type_info().name() {\n                        \"TINYINT(1)\" | \"BOOLEAN\" => {\n                            Value::Bool(row.try_get(c.ordinal()).expect(\"Failed to get boolean\"))\n                        }\n                        \"TINYINT UNSIGNED\" => Value::TinyUnsigned(\n                            row.try_get(c.ordinal())\n                                .expect(\"Failed to get unsigned tiny integer\"),\n                        ),\n                        \"SMALLINT UNSIGNED\" => Value::SmallUnsigned(\n                            row.try_get(c.ordinal())\n                                .expect(\"Failed to get unsigned small integer\"),\n                        ),\n                        \"INT UNSIGNED\" => Value::Unsigned(\n                            row.try_get(c.ordinal())\n                                .expect(\"Failed to get unsigned integer\"),\n                        ),\n                        \"MEDIUMINT UNSIGNED\" | \"BIGINT UNSIGNED\" => Value::BigUnsigned(\n                            row.try_get(c.ordinal())\n                                .expect(\"Failed to get unsigned big integer\"),\n                        ),\n                        \"TINYINT\" => Value::TinyInt(\n                            row.try_get(c.ordinal())\n                                .expect(\"Failed to get tiny integer\"),\n                        ),\n                        \"SMALLINT\" => Value::SmallInt(\n                            row.try_get(c.ordinal())\n                                .expect(\"Failed to get small integer\"),\n                        ),\n                        \"INT\" => {\n                            Value::Int(row.try_get(c.ordinal()).expect(\"Failed to get integer\"))\n                        }\n                        \"MEDIUMINT\" | \"BIGINT\" => Value::BigInt(\n                            row.try_get(c.ordinal()).expect(\"Failed to get big integer\"),\n                        ),\n                        \"FLOAT\" => {\n                            Value::Float(row.try_get(c.ordinal()).expect(\"Failed to get float\"))\n                        }","sourceCodeStart":395,"sourceCodeEnd":431,"githubUrl":"https://github.com/SeaQL/sea-orm/blob/e29bcd1b417c41a553b386fe94511d7c64a1c8ec/src/driver/sqlx_mysql.rs#L395-L431","documentation":"In `ProxyRow`'s MySQL decoding, columns with metadata `MEDIUMINT UNSIGNED` or `BIGINT UNSIGNED` are fetched with `row.try_get::<u64>` and unwrapped with `.expect(\"Failed to get unsigned big integer\")`. If sqlx cannot decode the value as an unsigned 64-bit integer (NULL, incompatible underlying type, schema drift), the expect panics. It means the row value does not match the declared unsigned wide-integer column type.","triggerScenarios":"A `BIGINT UNSIGNED`/`MEDIUMINT UNSIGNED` column containing NULL, or actual server value of a different type than the described metadata, while decoding rows through the proxy driver.","commonSituations":"Entity expects non-nullable `BIGINT UNSIGNED` (e.g. auto-increment id) but raw SQL returns NULL for it; mock proxy test data supplies a string or signed value for a declared BIGINT UNSIGNED column; cached prepared-statement metadata predates an ALTER TABLE.","solutions":["Ensure the column is NOT NULL or change the entity field to `Option<u64>` so NULL decodes cleanly","Regenerate entities from the current schema to eliminate type drift","In proxy/mock tests, return values typed exactly as `u64` for BIGINT UNSIGNED columns","Check the raw SQL's SELECT list for expressions (e.g. COALESCE, CAST) that change the column's type/nullability"],"exampleFix":"// before\nlet v: u64 = row.try_get(c.ordinal()).expect(\"Failed to get unsigned big integer\");\n// after (library-side hardening)\nlet v: u64 = row.try_get::<Option<u64>, _>(c.ordinal())?.unwrap_or_default();","handlingStrategy":"validation","validationCode":"// Check BIGINT UNSIGNED columns are NOT NULL before decoding\nSELECT IS_NULLABLE, COLUMN_TYPE FROM information_schema.COLUMNS\nWHERE TABLE_SCHEMA = ? AND TABLE_NAME = ? AND COLUMN_NAME = ?;\n// expect COLUMN_TYPE = 'bigint unsigned', IS_NULLABLE = 'NO'","typeGuard":"fn is_u64_compatible(col_type: &str, nullable: bool, value_is_null: bool) -> bool {\n    matches!(col_type.to_ascii_lowercase().as_str(), \"bigint unsigned\" | \"mediumint unsigned\")\n        && !nullable && !value_is_null\n}","tryCatchPattern":null,"preventionTips":["Declare nullable bigint fields as Option<i64>","Watch for COALESCE/CAST in SELECT lists that change column types","Keep proxy/mock test data typed as u64 for unsigned bigint columns","Regenerate entities after schema migrations"],"tags":["mysql","sqlx","decoding","proxy-driver"],"backgroundTag":"type-mismatch","analyzedSha":"e29bcd1b417c41a553b386fe94511d7c64a1c8ec","analyzedAt":"2026-09-10T11:31:52.468Z","contentChangedAt":"2026-09-10T11:31:52.468Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}