huaxingao commented on a change in pull request #34148:
URL: https://github.com/apache/spark/pull/34148#discussion_r723433243
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala
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@@ -4492,6 +4492,39 @@ 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] [ , .
. . ]
+ * }}}
+ */
+ override def visitCreateIndex(ctx: CreateIndexContext): LogicalPlan =
withOrigin(ctx) {
+ val (indexType, indexName) = if (ctx.identifier.size() == 1) {
+ (null, ctx.identifier(0).getText)
Review comment:
If index type is not specified explicitly, the default value will be
used. For example, MySQL uses BTREE as index type if index type is not
provided.
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