Initial commit: KQL ↔ SDL PowerQuery proof of equivalence

harness/smoke_pq.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+"""Minimal PowerQuery smoke test against SDL."""
+import sys, json, time
+from pathlib import Path
+sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
+from harness.sdl_client import power_query, power_query_long_running
+
+NOW_MS = int(time.time() * 1000)
+START = NOW_MS - 30 * 24 * 3600 * 1000  # 30d back
+END = NOW_MS
+
+q = "dataset='kql-proof' | group n = count() by event_type"
+print(f"Query: {q}")
+print(f"Window: {START} .. {END}")
+t0 = time.time()
+r = power_query(q, START, END)
+print(f"Initial response in {time.time()-t0:.2f}s:")
+print(json.dumps({k: (v if k != 'values' else f'<{len(v)} rows>') for k, v in r.items()},
+                 indent=2, default=str))
+if r.get("continuationToken") or r.get("token"):
+    print("\nPolling for completion ...")
+    r = power_query_long_running(q, START, END, max_wait_sec=30)
+    print(json.dumps({k: (v if k != 'values' else f'<{len(v)} rows>') for k, v in r.items()},
+                     indent=2, default=str))
+print("\nColumns:", r.get("columns"))
+print("First 20 values:", r.get("values", [])[:20])