ganeshashree commented on code in PR #58450:
URL: https://github.com/apache/spark/pull/58450#discussion_r3934020476
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala:
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@@ -1025,9 +1025,31 @@ object FunctionRegistry {
expression[SchemaOfJson]("schema_of_json"),
expression[LengthOfJsonArray]("json_array_length"),
expression[JsonObjectKeys]("json_object_keys"),
- expression[JsonTypeof]("json_typeof")
+ expression[JsonTypeof]("json_typeof"),
+ // Built-in forms of the SQL:2016 JSON constructor and path functions,
resolved for plain calls
+ // that carry no SQL/JSON clauses (the dedicated grammar handles
clause-bearing syntax). The
+ // names must stay in sync with `routedJsonConstructorNames` below.
+ expressionBuilder("json_value", JsonValueExpressionBuilder),
+ expressionBuilder("json_query", JsonQueryExpressionBuilder),
+ expressionBuilder("json_exists", JsonExistsExpressionBuilder),
+ expressionBuilder("json_array", JsonArrayExpressionBuilder)
)
+ /**
+ * Names of the clause-free SQL/JSON constructor/path functions that
`AstBuilder` routes through
+ * function resolution. Single source of truth for the three places that
must stay in sync when a
Review Comment:
Reworded to describe it as the shared list backing the star guard (not a
single source of truth) and to state the two manual sync points explicitly;
kept "constructor/path function" terminology.
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