zinking commented on a change in pull request #2014:
URL: https://github.com/apache/calcite/pull/2014#discussion_r453618841
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File path: core/src/main/java/org/apache/calcite/sql/SqlUtil.java
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@@ -261,6 +261,32 @@ public static boolean isLiteralChain(SqlNode node) {
}
}
+ /**
+ * Unparses a call to an operator which has special syntax.
+ *
+ * @param operator The operator
+ * @param writer Writer
+ * @param call List of 0 or more operands
+ */
+ public static void unparseSpecialSyntax(SqlOperator operator,
+ SqlWriter writer,
+ SqlCall call) {
+ final List<SqlNode> operands = call.getOperandList();
+ switch (operator.getKind()) {
+ case INSERT:
+ assert operands.size() == 3 || operands.size() == 4;
+ final SqlInsert insert = new SqlInsert(call.getParserPosition(),
+ (SqlNodeList) operands.get(0), operands.get(1), operands.get(2),
+ operands.size() == 3 ? null : (SqlNodeList)
call.getOperandList().get(3));
Review comment:
I mean:
1. why `null`, is there a better value to pass
2. call.getOperandList() => operands
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