diff --git a/README.md b/README.md
index 8db0f25..99792ce 100644
--- a/README.md
+++ b/README.md
@@ -96,11 +96,13 @@ import com.databricks.spark.sql.perf.tpcds.TPCDS
 
 val tpcds = new TPCDS (sqlContext = sqlContext)
 // Set:
+val databaseName = ... // name of database with TPCDS data.
 val resultLocation = ... // place to write results
 val iterations = 1 // how many iterations of queries to run.
 val queries = tpcds.tpcds2_4Queries // queries to run.
 val timeout = 24*60*60 // timeout, in seconds.
 // Run:
+sql(s"use $databaseName")
 val experiment = tpcds.runExperiment(
   queries, 
   iterations = iterations,