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diff --git a/src/s3select/rapidjson/example/condense/condense.cpp b/src/s3select/rapidjson/example/condense/condense.cpp
new file mode 100644
index 000000000..46dc35043
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+++ b/src/s3select/rapidjson/example/condense/condense.cpp
@@ -0,0 +1,32 @@
+// JSON condenser example
+
+// This example parses JSON text from stdin with validation, 
+// and re-output the JSON content to stdout without whitespace.
+
+#include "rapidjson/reader.h"
+#include "rapidjson/writer.h"
+#include "rapidjson/filereadstream.h"
+#include "rapidjson/filewritestream.h"
+#include "rapidjson/error/en.h"
+
+using namespace rapidjson;
+
+int main(int, char*[]) {
+    // Prepare JSON reader and input stream.
+    Reader reader;
+    char readBuffer[65536];
+    FileReadStream is(stdin, readBuffer, sizeof(readBuffer));
+
+    // Prepare JSON writer and output stream.
+    char writeBuffer[65536];
+    FileWriteStream os(stdout, writeBuffer, sizeof(writeBuffer));
+    Writer<FileWriteStream> writer(os);
+
+    // JSON reader parse from the input stream and let writer generate the output.
+    if (!reader.Parse(is, writer)) {
+        fprintf(stderr, "\nError(%u): %s\n", static_cast<unsigned>(reader.GetErrorOffset()), GetParseError_En(reader.GetParseErrorCode()));
+        return 1;
+    }
+
+    return 0;
+}