cloud-fan commented on code in PR #45805:
URL: https://github.com/apache/spark/pull/45805#discussion_r1555179535
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/variant/variantExpressions.scala:
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@@ -403,3 +404,85 @@ object VariantGetExpressionBuilder extends
VariantGetExpressionBuilderBase(true)
)
// scalastyle:on line.size.limit
object TryVariantGetExpressionBuilder extends
VariantGetExpressionBuilderBase(false)
+
+// scalastyle:off line.size.limit line.contains.tab
+@ExpressionDescription(
+ usage = "_FUNC_(expr) - It separates a variant object/array into multiple
rows containing its fields/elements. Its result schema is `struct<pos int, key
string, value variant>`. `pos` is the position of the field/element in its
parent object/array, and `value` is the field/element value. `key` is the field
name when exploding a variant object, or is NULL when exploding a variant
array. It ignores any input that is not a variant array/object, including SQL
NULL, variant null, and any other variant values.",
+ examples = """
+ Examples:
+ > SELECT _FUNC_(parse_json('["hello", "world"]'));
Review Comment:
let's use the SQL standard TVF syntax to invoke it in the example.
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