raminqaf commented on code in PR #28510:
URL: https://github.com/apache/flink/pull/28510#discussion_r3457689792
##########
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/operations/converters/SqlNodeConvertUtils.java:
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@@ -108,6 +112,30 @@ static PlannerQueryOperation toQueryOperation(SqlNode
validated, ConvertContext
relational.project(), () ->
context.toQuotedSqlString(validated));
}
+ /**
+ * Validates the given materialized table {@code AS} query and converts it
into a {@link
+ * PlannerQueryOperation}. Shared by the CREATE / CREATE OR ALTER / ALTER
... AS converters.
+ */
+ public static PlannerQueryOperation validateAndConvertAsQuery(
+ SqlNode asQuery, ConvertContext context) {
+ final FlinkPlannerImpl flinkPlanner = context.getFlinkPlanner();
+ final SqlNode validated = flinkPlanner.validate(asQuery);
+ final Operation operation =
+ SqlNodeToOperationConversion.convert(
+ flinkPlanner, context.getCatalogManager(),
validated)
+ .orElseThrow(
+ () ->
+ new TableException(
Review Comment:
I will make it more generic. We can even replace the AsQuery validation of
RTAS and CTAS with this method.
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