func (e *XSelectTableExec) doRequest() error {
txn, err := e.ctx.GetTxn(false)
if err != nil {
return errors.Trace(err)
}
selReq := new(tipb.SelectRequest)
startTs := txn.StartTS()
selReq.StartTs = &startTs
selReq.Fields = resultFieldsToPBExpression(e.tablePlan.Fields())
selReq.Where = conditionsToPBExpression(e.tablePlan.FilterConditions...)
selReq.Ranges = tableRangesToPBRanges(e.tablePlan.Ranges)
selReq.TableInfo = tablecodec.TableToProto(e.tablePlan.Table)
e.result, err = xapi.Select(txn.GetClient(), selReq, 1)
if err != nil {
return errors.Trace(err)
}
return nil
}
func (e *XSelectIndexExec) doTableRequest(txn kv.Transaction, handles []int64) (*xapi.SelectResult, error) {
selTableReq := new(tipb.SelectRequest)
startTs := txn.StartTS()
selTableReq.StartTs = &startTs
selTableReq.TableInfo = tablecodec.TableToProto(e.indexPlan.Table)
selTableReq.Fields = resultFieldsToPBExpression(e.indexPlan.Fields())
for _, h := range handles {
if h == math.MaxInt64 {
// We can't convert MaxInt64 into an left closed, right open range.
continue
}
pbRange := new(tipb.KeyRange)
pbRange.Low = codec.EncodeInt(nil, h)
pbRange.High = codec.EncodeInt(nil, h)
selTableReq.Ranges = append(selTableReq.Ranges, pbRange)
}
selTableReq.Where = conditionsToPBExpression(e.indexPlan.FilterConditions...)
return xapi.Select(txn.GetClient(), selTableReq, 10)
}