chunweilei commented on a change in pull request #1138: [CALCITE-1581] UDTF
like in hive
URL: https://github.com/apache/calcite/pull/1138#discussion_r270263078
##########
File path:
core/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java
##########
@@ -1320,6 +1331,175 @@ protected SqlNode performUnconditionalRewrites(
return node;
}
+ private SqlNode performHiveUdtfRewrite(SqlNode node) {
+ Map<SqlSelect, UdtfInfo> selectUdtfInfo = new HashMap<>();
+ SqlNode rewirte = performHiveUdtfRewriteInternal(node, selectUdtfInfo);
+ // System.out.println("before:\n" + node.toString() +" \nafter:\n" +
rewirte.toString());
+ return node;
+ }
+
+ private SqlNode performHiveUdtfRewriteInternal(SqlNode current,
+ Map<SqlSelect, UdtfInfo>
selectUdtfInfos) {
+ System.out.println("start rewrite:" + current);
+
Review comment:
We don't print anything in general.
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