xinrong-databricks commented on a change in pull request #35415:
URL: https://github.com/apache/spark/pull/35415#discussion_r803360535
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala
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@@ -2538,6 +2538,76 @@ case class Encode(value: Expression, charset: Expression)
newLeft: Expression, newRight: Expression): Encode = copy(value = newLeft,
charset = newRight)
}
+/**
+ * Converts the input expression to a binary value based on the supplied
format.
+ */
+// scalastyle:off line.size.limit
+@ExpressionDescription(
+ usage = """
+ _FUNC_(str[, fmt]) - Converts the input `str` to a binary value based on
the supplied `fmt`.
+ By default, the binary format for conversion is "hex" if `fmt` is
omitted.
Review comment:
Setting `hex` as the default format referencing
[reference](https://docs.snowflake.com/en/sql-reference/functions/to_binary.html).
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