mayankshriv commented on a change in pull request #5513:
URL: https://github.com/apache/incubator-pinot/pull/5513#discussion_r436764713
##########
File path:
pinot-broker/src/main/java/org/apache/pinot/broker/requesthandler/BaseBrokerRequestHandler.java
##########
@@ -435,6 +455,116 @@ static void handleQueryLimitOverride(BrokerRequest
brokerRequest, int queryLimit
}
}
+ /**
+ * Check if a SQL parsed BrokerRequest is a literal only query.
+ * @param brokerRequest
+ * @return true if this query selects only Literals
+ *
+ */
+ @VisibleForTesting
+ static boolean isLiteralOnlyQuery(BrokerRequest brokerRequest) {
+ if (brokerRequest.getPinotQuery() != null) {
Review comment:
Would be good to state in the PR description that this feature is only
supported for SQL mode.
##########
File path:
pinot-common/src/main/java/org/apache/pinot/sql/parsers/CalciteSqlParser.java
##########
@@ -676,14 +678,25 @@ protected static Expression
invokeCompileTimeFunctionExpression(Expression funcE
try {
FunctionInvoker invoker = new FunctionInvoker(functionInfo);
Object result = invoker.process(arguments);
- if (result instanceof String) {
- result = String.format("'%s'", result);
- }
return RequestUtils.getLiteralExpression(result);
} catch (Exception e) {
throw new SqlCompilationException(new
IllegalArgumentException("Unsupported function - " + funcName, e));
}
}
return funcExpr;
}
+
+ public static boolean isLiteralOnlyExpression(Expression e) {
+ if (e.getType() == ExpressionType.LITERAL) {
+ return true;
+ }
+ if (e.getType() == ExpressionType.FUNCTION) {
+ Function functionCall = e.getFunctionCall();
+ if (functionCall.getOperator().equalsIgnoreCase(SqlKind.AS.toString())) {
Review comment:
Does this work only with `AS`?
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