workload: add a literal implementation of tpcc

Our current TPC-C kit is heavily optimized. For example, in several places we
combine an update and a select with an UPDATE...RETURNING statement. In other
places, we use IN lists to reduce the number of round-trips from the client to
the server. As best I can tell, all of this is acceptable according to the
specification (after all, you can reduce the round-trips to 1 by implementing
each transaction as a stored procedure), however some kits implement things
much more literally, with one client-server roundtrip for each step of each
transaction.

This commit adds a literal implementation for the New Order and Payment
transactions. We're focusing our attention there for now, as these two
transactions comprise 88% of the workload.

NOTE: There's a significant amount of whitespace changes in this commit. When
reviewing, you'll want to turn off the whitespace changes to avoid having to
review all of them.

Epic: none
Release note: none

Author: ajstorm

pkg/cmd/roachtest/tests/tpcc.go

@@ -759,6 +759,26 @@ func registerTPCC(r registry.Registry) {
 		},
 	})
 
+	r.Add(registry.TestSpec{
+		Name:                      "tpcc-nowait/literal/w=1000/nodes=5/cpu=16",
+		Owner:                     registry.OwnerTestEng,
+		Benchmark:                 true,
+		Cluster:                   r.MakeClusterSpec(6, spec.CPU(16), spec.WorkloadNode()),
+		CompatibleClouds:          registry.AllExceptAzure,
+		Suites:                    registry.Suites(registry.Nightly),
+		TestSelectionOptOutSuites: registry.Suites(registry.Nightly),
+		Run: func(ctx context.Context, t test.Test, c cluster.Cluster) {
+			runTPCC(ctx, t, t.L(), c, tpccOptions{
+				Warehouses:                    1000,
+				Duration:                      10 * time.Minute,
+				ExtraRunArgs:                  "--wait=false --tolerate-errors --workers=200 --literal-implementation",
+				SetupType:                     usingImport,
+				ExpensiveChecks:               true, // Run expensive checks here to catch any issues with the literal implementation
+				DisableDefaultScheduledBackup: true,
+			})
+		},
+	})
+
 	r.Add(registry.TestSpec{
 		Name:              "tpcc-nowait/nodes=3/w=1",
 		Owner:             registry.OwnerTestEng,