[
https://issues.apache.org/jira/browse/FLINK-35993?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Dylan He updated FLINK-35993:
-----------------------------
Description:
Add UNHEX function.
----
Converts hexadecimal {{expr}} to BINARY.
Example:
{code:sql}
> SELECT DECODE(UNHEX('466C696E6B'), 'UTF-8');
Flink
{code}
Syntax:
{code:sql}
UNHEX(expr)
{code}
Arguments:
* {{expr}}: A STRING expression of hexadecimal characters.
Returns:
A BINARY.
If the length of {{expr}} is odd, the first character is discarded and the
result is left padded with a null byte.
If {{expr}} contains non-hex characters, the result is NULL.
See also:
*
[Spark|https://spark.apache.org/docs/3.5.1/sql-ref-functions-builtin.html#mathematical-functions]
*
[Databricks|https://docs.databricks.com/en/sql/language-manual/functions/unhex.html]
*
[MySQL|https://dev.mysql.com/doc/refman/8.4/en/string-functions.html#function_unhex]
* [PostgreSQL|https://www.postgresql.org/docs/16/functions-binarystring.html]
decode(expr, 'hex')
*
[Snowflake|https://docs.snowflake.com/en/sql-reference/functions/hex_decode_binary]
* [Calcite|https://calcite.apache.org/docs/reference.html] from_hex
was:
Add UNHEX function.
----
Converts hexadecimal {{expr}} to BINARY.
Example:
{code:sql}
> SELECT DECODE(UNHEX('466C696E6B'), 'UTF-8');
Flink
{code}
Syntax:
{code:sql}
UNHEX(expr)
{code}
Arguments:
* {{expr}}: A STRING expression of hexadecimal characters.
Returns:
A BINARY.
If the length of {{expr}} is odd, or {{expr}} contains non hex characters, the
function returns an error.
See also:
*
[Spark|https://spark.apache.org/docs/3.5.1/sql-ref-functions-builtin.html#mathematical-functions]
*
[Databricks|https://docs.databricks.com/en/sql/language-manual/functions/unhex.html]
*
[MySQL|https://dev.mysql.com/doc/refman/8.4/en/string-functions.html#function_unhex]
* [PostgreSQL|https://www.postgresql.org/docs/16/functions-binarystring.html]
decode(expr, 'hex')
*
[Snowflake|https://docs.snowflake.com/en/sql-reference/functions/hex_decode_binary]
* [Calcite|https://calcite.apache.org/docs/reference.html] from_hex
> Add UNHEX function
> ------------------
>
> Key: FLINK-35993
> URL: https://issues.apache.org/jira/browse/FLINK-35993
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / API
> Reporter: Dylan He
> Priority: Major
> Labels: pull-request-available
>
> Add UNHEX function.
> ----
> Converts hexadecimal {{expr}} to BINARY.
> Example:
> {code:sql}
> > SELECT DECODE(UNHEX('466C696E6B'), 'UTF-8');
> Flink
> {code}
> Syntax:
> {code:sql}
> UNHEX(expr)
> {code}
> Arguments:
> * {{expr}}: A STRING expression of hexadecimal characters.
> Returns:
> A BINARY.
> If the length of {{expr}} is odd, the first character is discarded and the
> result is left padded with a null byte.
> If {{expr}} contains non-hex characters, the result is NULL.
> See also:
> *
> [Spark|https://spark.apache.org/docs/3.5.1/sql-ref-functions-builtin.html#mathematical-functions]
> *
> [Databricks|https://docs.databricks.com/en/sql/language-manual/functions/unhex.html]
> *
> [MySQL|https://dev.mysql.com/doc/refman/8.4/en/string-functions.html#function_unhex]
> *
> [PostgreSQL|https://www.postgresql.org/docs/16/functions-binarystring.html]
> decode(expr, 'hex')
> *
> [Snowflake|https://docs.snowflake.com/en/sql-reference/functions/hex_decode_binary]
> * [Calcite|https://calcite.apache.org/docs/reference.html] from_hex
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
