diff --git a/benchmarks/callaghanbench/benchmark.go b/benchmarks/callaghanbench/benchmark.go
new file mode 100644
index 0000000..acd7173
--- /dev/null
+++ b/benchmarks/callaghanbench/benchmark.go
@@ -0,0 +1,95 @@
+package main
+
+import "github.com/Shopify/mybench"
+
+// https://github.com/mdcallag/mytools/blob/3c57ee97431112bdc167fc9c0ef032b24cb3c485/bench/ibench/iibench.py#L357-L390
+// https://github.com/mdcallag/mytools/blob/3c57ee97431112bdc167fc9c0ef032b24cb3c485/bench/ibench/iibench.py#L517
+func NewTablePurchaseIndex(idGen mybench.DataGenerator) mybench.Table {
+
+	return mybench.InitializeTable(mybench.Table{
+		Name: "purchase_index",
+		Columns: []*mybench.Column{
+			{
+				Name:       "transactionid",
+				Definition: "bigint not null auto_increment",
+				Generator:  idGen,
+			},
+			{
+				Name:       "dateandtime",
+				Definition: "datetime",
+				Generator:  mybench.NewNowGenerator(),
+			},
+			{
+				Name:       "cashregisterid",
+				Definition: "int not null",
+				// https://github.com/mdcallag/mytools/blob/3c57ee97431112bdc167fc9c0ef032b24cb3c485/bench/ibench/iibench.py#L496
+				Generator: mybench.NewUniformIntGenerator(0, 1000),
+			},
+			{
+				Name:       "customerid",
+				Definition: "int not null",
+				// https://github.com/mdcallag/mytools/blob/3c57ee97431112bdc167fc9c0ef032b24cb3c485/bench/ibench/iibench.py#L498
+				Generator: mybench.NewUniformIntGenerator(0, 100000),
+			},
+			{
+				Name:       "productid",
+				Definition: "int not null",
+				// https://github.com/mdcallag/mytools/blob/3c57ee97431112bdc167fc9c0ef032b24cb3c485/bench/ibench/iibench.py#L497
+				Generator: mybench.NewUniformIntGenerator(0, 10000),
+			},
+			{
+				Name:       "price",
+				Definition: "float not null",
+				// https://github.com/mdcallag/mytools/blob/3c57ee97431112bdc167fc9c0ef032b24cb3c485/bench/ibench/iibench.py#L499
+				// This is not implemented to be accurate. The generator implemented by
+				// Mark Callaghan is dependent on customer id. Specifically it's:
+				//
+				// (UniformFloat(0, 500) + customerid) / 100.0
+				//
+				// TODO: mybench should have a way to generate values dependent on
+				// another value, but then the generators may have to be specified in a
+				// DAG, which can be a pain.
+				Generator: mybench.NewUniformFloatGenerator(0, 5),
+			},
+			{
+				Name:       "data",
+				Definition: "varchar(4000)",
+				// https://github.com/mdcallag/mytools/blob/3c57ee97431112bdc167fc9c0ef032b24cb3c485/bench/ibench/iibench.py#L500
+				// TODO: this is not accurately translated.
+				Generator: mybench.NewUniformLengthStringGenerator(10, 11),
+			},
+		},
+		PrimaryKey: []string{"transactionid"},
+	})
+}
+
+type CallaghanBench struct {
+	*mybench.BenchmarkConfig
+
+	InitialNumRows int64
+}
+
+func (b CallaghanBench) Name() string {
+	return "CallaghanBench"
+}
+
+func (b CallaghanBench) RunLoader() error {
+	idGen := mybench.NewNullGenerator()
+	table := NewTablePurchaseIndex(idGen)
+	table.ReloadData(
+		b.BenchmarkConfig.DatabaseConfig,
+		b.InitialNumRows,
+		200,
+		b.BenchmarkConfig.RateControlConfig.Concurrency,
+	)
+	return nil
+}
+
+func (b CallaghanBench) Workloads() ([]mybench.AbstractWorkload, error) {
+	idGen := mybench.NewNullGenerator()
+	table := NewTablePurchaseIndex(idGen)
+
+	return []mybench.AbstractWorkload{
+		NewInsert(table),
+	}, nil
+}
diff --git a/benchmarks/callaghanbench/main.go b/benchmarks/callaghanbench/main.go
new file mode 100644
index 0000000..e1da746
--- /dev/null
+++ b/benchmarks/callaghanbench/main.go
@@ -0,0 +1,19 @@
+package main
+
+import (
+	"flag"
+
+	"github.com/Shopify/mybench"
+)
+
+func main() {
+	benchmarkInterface := CallaghanBench{
+		BenchmarkConfig: mybench.NewBenchmarkConfig(),
+	}
+
+	flag.Parse()
+	err := mybench.Run(benchmarkInterface)
+	if err != nil {
+		panic(err)
+	}
+}
diff --git a/benchmarks/callaghanbench/workloads.go b/benchmarks/callaghanbench/workloads.go
new file mode 100644
index 0000000..99d165a
--- /dev/null
+++ b/benchmarks/callaghanbench/workloads.go
@@ -0,0 +1,69 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+
+	"github.com/Shopify/mybench"
+)
+
+type Insert struct {
+	mybench.WorkloadConfig
+	mybench.NoContextData
+
+	batchSize int
+	table     mybench.Table
+}
+
+func (w *Insert) Event(ctx mybench.WorkerContext[mybench.NoContextData]) error {
+	// https://github.com/mdcallag/mytools/blob/3c57ee97431112bdc167fc9c0ef032b24cb3c485/bench/ibench/iibench.py#L707-L731
+	var valuesBuf bytes.Buffer
+	for i := 0; i < w.batchSize; i++ {
+		valuesBuf.WriteByte('(')
+
+		dateandtime := w.table.Generate(ctx.Rand, "dateandtime").(string)
+		valuesBuf.WriteString(fmt.Sprintf("'%s'", dateandtime))
+		valuesBuf.WriteByte(',')
+
+		cashregisterid := w.table.Generate(ctx.Rand, "cashregisterid").(int64)
+		valuesBuf.WriteString(fmt.Sprintf("%d", cashregisterid))
+		valuesBuf.WriteByte(',')
+
+		customerid := w.table.Generate(ctx.Rand, "customerid").(int64)
+		valuesBuf.WriteString(fmt.Sprintf("%d", customerid))
+		valuesBuf.WriteByte(',')
+
+		productid := w.table.Generate(ctx.Rand, "productid").(int64)
+		valuesBuf.WriteString(fmt.Sprintf("%d", productid))
+		valuesBuf.WriteByte(',')
+
+		price := w.table.Generate(ctx.Rand, "price").(float64)
+		valuesBuf.WriteString(fmt.Sprintf("%f", price))
+		valuesBuf.WriteByte(',')
+
+		data := w.table.Generate(ctx.Rand, "data").(string)
+		valuesBuf.WriteString(fmt.Sprintf("'%s'", data))
+
+		valuesBuf.WriteByte(')')
+		if i != w.batchSize-1 {
+			valuesBuf.WriteByte(',')
+		}
+	}
+
+	query := fmt.Sprintf("insert into purchase_index (dateandtime, cashregisterid, customerid, productid, price, data) values %s", valuesBuf.String())
+	_, err := ctx.Conn.Execute(query)
+	return err
+}
+
+func NewInsert(table mybench.Table) mybench.AbstractWorkload {
+	workloadInterface := &Insert{
+		WorkloadConfig: mybench.WorkloadConfig{
+			Name:          "Insert",
+			WorkloadScale: 1.0,
+		},
+		batchSize: 1000,
+		table:     table,
+	}
+
+	return mybench.NewWorkload[mybench.NoContextData](workloadInterface)
+}