# hex — DuckDB 1.3.2 Converts `blob` to `VARCHAR` using hexadecimal encoding. - Reference: /products/haybarn/functions/releases/duckdb-1.3.2/hex/ - JSON: /products/haybarn/functions/api/v1/duckdb-1.3.2/functions/hex.json - Snapshot ID: duckdb-1.3.2 - Engine: duckdb v1.3.2 - Source ID: 0b83e5d2f6 - Binary SHA-256: 9a2ae2a4d5dbd07a5b0cb30c502d65014825d34924c681eb3faa7647e7cd2b6f - Captured: 2026-09-05T18:37:33.818Z - Source: https://github.com/duckdb/duckdb/releases/tag/v1.3.2 - Loaded extensions: autocomplete, core_functions, icu, json, parquet, shell ## Interpretation - Choose a snapshot matching the target engine and build. The default is captured from the published Haybarn WASM package used by the browser playground. Historical native snapshots are also available. - Availability is an observation in the recorded build and extension profile, not a guarantee of support in every installation or in WASM. - Types and descriptions are declarations from duckdb_functions(). Binding can specialize result types. Null means not supplied by the catalog; do not invent defaults, optionality, argument mode, or table output columns. - Raw parameter arrays preserve catalog order for scalar/aggregate/macro functions. Raw table arguments are alphabetical. Use callingConvention for engine-confirmed positional order and named arguments; null modes are unrecorded. Named does not mean optional. Macro defaults and special named variadic behavior are not supplied by duckdb_functions(). - Catalog examples are source material and may require data or extensions. runnableExamples contains separately verified SQL for the pinned WASM package; sample-data adaptations and guide examples are labeled separately. - Guide annotations and recipes are separate editorial content. The browser runner always uses Haybarn WASM 1.5.5-rc3, independently of the documentation snapshot. - All URLs beginning with / are relative to the origin hosting this document. Exports require no JavaScript, cookies, API key, or browser engine. ## Overloads ### overload-c60b23f140dbc82e Kind: scalar. Parameter order: catalog-order. ```text hex(blob: BLOB) → VARCHAR ``` Link: /products/haybarn/functions/releases/duckdb-1.3.2/hex/#overload-c60b23f140dbc82e | Argument | Catalog type | Calling mode | | --- | --- | --- | | blob | BLOB | not recorded | Declared return type: VARCHAR. Variadic argument type: none declared. Stability: CONSISTENT. Declared side effects: false. ### overload-896b96c62dc331c0 Kind: scalar. Parameter order: catalog-order. ```text hex(string: VARCHAR) → VARCHAR ``` Link: /products/haybarn/functions/releases/duckdb-1.3.2/hex/#overload-896b96c62dc331c0 | Argument | Catalog type | Calling mode | | --- | --- | --- | | string | VARCHAR | not recorded | Declared return type: VARCHAR. Variadic argument type: none declared. Stability: CONSISTENT. Declared side effects: false. Converts the string to hexadecimal representation. ### overload-d5ccb9d95113c1a8 Kind: scalar. Parameter order: catalog-order. ```text hex(value: BIGINT) → VARCHAR ``` Link: /products/haybarn/functions/releases/duckdb-1.3.2/hex/#overload-d5ccb9d95113c1a8 | Argument | Catalog type | Calling mode | | --- | --- | --- | | value | BIGINT | not recorded | Declared return type: VARCHAR. Variadic argument type: none declared. Stability: CONSISTENT. Declared side effects: false. Converts the value to hexadecimal representation. ### overload-1adb9136597ad9f1 Kind: scalar. Parameter order: catalog-order. ```text hex(value: HUGEINT) → VARCHAR ``` Link: /products/haybarn/functions/releases/duckdb-1.3.2/hex/#overload-1adb9136597ad9f1 | Argument | Catalog type | Calling mode | | --- | --- | --- | | value | HUGEINT | not recorded | Declared return type: VARCHAR. Variadic argument type: none declared. Stability: CONSISTENT. Declared side effects: false. Converts the value to hexadecimal representation. ### overload-d27ef0f0e8cbc15f Kind: scalar. Parameter order: catalog-order. ```text hex(value: UBIGINT) → VARCHAR ``` Link: /products/haybarn/functions/releases/duckdb-1.3.2/hex/#overload-d27ef0f0e8cbc15f | Argument | Catalog type | Calling mode | | --- | --- | --- | | value | UBIGINT | not recorded | Declared return type: VARCHAR. Variadic argument type: none declared. Stability: CONSISTENT. Declared side effects: false. Converts the value to hexadecimal representation. ### overload-c4f051f6cb977d7a Kind: scalar. Parameter order: catalog-order. ```text hex(value: UHUGEINT) → VARCHAR ``` Link: /products/haybarn/functions/releases/duckdb-1.3.2/hex/#overload-c4f051f6cb977d7a | Argument | Catalog type | Calling mode | | --- | --- | --- | | value | UHUGEINT | not recorded | Declared return type: VARCHAR. Variadic argument type: none declared. Stability: CONSISTENT. Declared side effects: false. Converts the value to hexadecimal representation. ### overload-afd52ab07ce37363 Kind: scalar. Parameter order: catalog-order. ```text hex(value: VARINT) → VARCHAR ``` Link: /products/haybarn/functions/releases/duckdb-1.3.2/hex/#overload-afd52ab07ce37363 | Argument | Catalog type | Calling mode | | --- | --- | --- | | value | VARINT | not recorded | Declared return type: VARCHAR. Variadic argument type: none declared. Stability: CONSISTENT. Declared side effects: false. Converts the value to hexadecimal representation. ## Guide recipes No guide recipes. ## Engine catalog examples Source examples may require additional data or extensions. Expressions are wrapped in SELECT; execution verification is not recorded. Reported for: overload-c60b23f140dbc82e ```sql SELECT hex('\xAA\xBB'::BLOB); ``` Reported for: overload-896b96c62dc331c0 ```sql SELECT hex('Hello'); ``` Reported for: overload-d5ccb9d95113c1a8, overload-1adb9136597ad9f1, overload-d27ef0f0e8cbc15f, overload-c4f051f6cb977d7a, overload-afd52ab07ce37363 ```sql SELECT hex(42); ``` ## Runnable examples Executed successfully in Haybarn WASM 1.5.5-rc3. Sample data and guide examples are separate from the original catalog. ```sql SELECT hex('\xAA\xBB'::BLOB); ``` ```sql SELECT hex('Hello'); ``` ```sql SELECT hex(42); ``` ## Additional DuckDB documentation - [Blob Functions](https://duckdb.org/docs/current/sql/functions/blob#hexblob) - [Text Functions](https://duckdb.org/docs/current/sql/functions/text#hexstring) - [Text Functions](https://duckdb.org/docs/current/sql/functions/text.html#hexstring) ## In other engines ### BigQuery BigQuery: ```sql UPPER(TO_HEX(x)) ``` Haybarn / DuckDB: ```sql HEX(x) ``` Translation from [SQLGlot](https://github.com/tobymao/sqlglot/blob/3086608e6fd4c41c02dfba47171608d2b193fce2/tests/dialects/test_bigquery.py#L1154). ## Observed availability | Snapshot | Observed | Overloads | JSON | | --- | --- | --- | --- | | haybarn-1.5.5-rc3 | present | 7 | [reference](/products/haybarn/functions/api/v1/haybarn-1.5.5-rc3/functions/hex.json) | | duckdb-1.5.5 | present | 7 | [reference](/products/haybarn/functions/api/v1/duckdb-1.5.5/functions/hex.json) | | duckdb-1.4.4 | present | 7 | [reference](/products/haybarn/functions/api/v1/duckdb-1.4.4/functions/hex.json) | | duckdb-1.3.2 | present | 7 | [reference](/products/haybarn/functions/api/v1/duckdb-1.3.2/functions/hex.json) | Engine catalog documentation is derived from MIT-licensed Haybarn and DuckDB. [Notices](/third-party-notices.txt).