func prepareTableData(store kv.Storage, tbl *simpleTableInfo, count int64, gen genValueFunc) error {
txn, err := store.Begin()
if err != nil {
return errors.Trace(err)
}
for i := int64(1); i <= count; i++ {
setRow(txn, i, tbl, gen)
}
return txn.Commit()
}
