chunweilei commented on a change in pull request #1102: [CALCITE-1515]
RelBuilder supports creating TableFunctionScan
URL: https://github.com/apache/calcite/pull/1102#discussion_r264957670
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File path: core/src/main/java/org/apache/calcite/tools/RelBuilder.java
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@@ -1045,6 +1053,69 @@ public RelBuilder snapshot(RexNode period) {
return this;
}
+
+ /**
+ * Gets column mappings of the operator.
+ *
+ * @param op operator instance
+ * @return column mappings associated with this function
+ */
+ private Set<RelColumnMapping> getColumnMappings(SqlOperator op) {
+ SqlReturnTypeInference inference = op.getReturnTypeInference();
+ if (inference == null) {
+ return null;
+ }
Review comment:
Ok. Will do.
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