minor: Allow to run TPCH bench for a specific query

Author: comphead

benchmarks/bench.sh

@@ -427,8 +427,9 @@ run_tpch_mem() {
     RESULTS_FILE="${RESULTS_DIR}/tpch_mem_sf${SCALE_FACTOR}.json"
     echo "RESULTS_FILE: ${RESULTS_FILE}"
     echo "Running tpch_mem benchmark..."
+    QUERY=$([ -n "$ARG3" ] && echo "--query $ARG3" || echo "")
     # -m means in memory
-    $CARGO_COMMAND --bin tpch -- benchmark datafusion --iterations 5 --path "${TPCH_DIR}" --prefer_hash_join "${PREFER_HASH_JOIN}" -m --format parquet -o "${RESULTS_FILE}"
+    $CARGO_COMMAND --bin tpch -- benchmark datafusion --iterations 5 --path "${TPCH_DIR}" --prefer_hash_join "${PREFER_HASH_JOIN}" -m --format parquet -o "${RESULTS_FILE}" $QUERY
 }
 
 # Runs the cancellation benchmark