hsyuan commented on a change in pull request #1565: [CALCITE-3481] Support
convert TableFunctionScan to SqlNode
URL: https://github.com/apache/calcite/pull/1565#discussion_r343810844
##########
File path:
core/src/main/java/org/apache/calcite/rel/rel2sql/RelToSqlConverter.java
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@@ -828,6 +830,27 @@ public Result visit(Uncollect e) {
return result(asNode, ImmutableList.of(Clause.FROM), e, null);
}
+ public Result visit(TableFunctionScan e) {
+ final List<SqlNode> inputSqlNodes = new ArrayList<>();
+ for (int i = 0; i < e.getInputs().size(); i++) {
+ Result child = visitChild(i, e.getInput(i));
+ inputSqlNodes.add(child.asStatement());
+ }
+ final Context context = tableFunctionScanContext(inputSqlNodes);
+ SqlNode callNode = context.toSql(null, e.getCall());
+ // Convert to table function call, "TABLE($function_name(xxx))"
+ SqlNode tableCall = new SqlBasicCall(
+ SqlStdOperatorTable.COLLECTION_TABLE,
+ new SqlNode[]{callNode},
+ SqlParserPos.ZERO);
+ SqlNode select = new SqlSelect(
+ SqlParserPos.ZERO, null, null, tableCall,
+ null, null, null, null, null, null, null);
+ Result x = new Result(select,
Review comment:
additional space after new
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