fqaiser94 commented on a change in pull request #27066: [SPARK-31317][SQL] Add
withField method to Column class
URL: https://github.com/apache/spark/pull/27066#discussion_r403759147
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypeCreator.scala
##########
@@ -514,3 +514,178 @@ case class StringToMap(text: Expression, pairDelim:
Expression, keyValueDelim: E
override def prettyName: String = "str_to_map"
}
+
+/**
+ * Adds/replaces fields in a struct.
+ * Returns null if struct is null.
+ * If multiple fields already exist with the one of the given fieldNames, they
will all be replaced.
+ */
+// scalastyle:off line.size.limit
+@ExpressionDescription(
+ usage = "_FUNC_(struct, name1, val1, name2, val2, ...) - Adds/replaces
fields in struct by name.",
+ examples = """
+ Examples:
+ > SELECT _FUNC_(NAMED_STRUCT("a", 1), "b", 2, "c", 3);
+ {"a":1,"b":2,"c":3}
Review comment:
I've added one example now. If you still think important examples are still
missing, please let me know.
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