huaxingao commented on a change in pull request #34148:
URL: https://github.com/apache/spark/pull/34148#discussion_r720852441
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
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@@ -4492,6 +4492,37 @@ class AstBuilder extends SqlBaseBaseVisitor[AnyRef] with
SQLConfHelper with Logg
CommentOnTable(createUnresolvedTable(ctx.multipartIdentifier, "COMMENT ON
TABLE"), comment)
}
+ /**
+ * Create an index, returning a [[CreateIndex]] logical plan.
+ * For example:
+ * {{{
+ * CREATE [index_type] INDEX [index_name] ON [TABLE] table_name
(column_index_property_list)
+ * [OPTIONS indexPropertyList]
+ * column_index_property_list: column_name [OPTIONS(indexPropertyList)] [
, . . . ]
+ * indexPropertyList: index_property_name = index_property_value [ , . .
. ]
Review comment:
It's optional. I forgot to put this in `[]`.
I double checked oracle and MySQL reference, the index properties could have
name without value.
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