try_validate_utf8
function
Applies to: Databricks SQL Databricks Runtime 15.4 and later
Returns the input value if it corresponds to a valid UTF-8 string, or NULL
otherwise.
Returns
A STRING
which is byte-wise equal to strExpr
in case it represents a valid UTF-8 string, or NULL
otherwise.
To return an error if the input is not a valid UTF-8 string, use the validate_utf8 function.
Examples
– Simple example taking a valid string as input.
> SELECT try_validate_utf8('Spark')
Spark
– Simple example taking a valid collated string as input.
> SELECT try_validate_utf8('SQL' COLLATE UTF8_LCASE)
SQL
– Simple example taking a valid hexadecimal string as input.
> SELECT try_validate_utf8(x'61')
a
– Example taking an invalid hexadecimal string as input (illegal UTF-8 byte sequence).
> SELECT try_validate_utf8(x'80')
NULL
- Example taking an invalid hexadecimal string as input (illegal UTF-8 byte sequence).
> SELECT try_validate_utf8(x'61C262')
NULL