Function TruncateIndexValues

pkg/tablecodec/tablecodec.go:1768–1774

TruncateIndexValues truncates the index values created using only the leading part of column values.

(tblInfo *model.TableInfo, idxInfo *model.IndexInfo, indexedValues []types.Datum)

// TruncateIndexValues truncates the index values created using only the leading part of column values.
func TruncateIndexValues(tblInfo *model.TableInfo, idxInfo *model.IndexInfo, indexedValues []types.Datum) {
	for i := 0; i < len(indexedValues); i++ {
		idxCol := idxInfo.Columns[i]
		tblCol := tblInfo.Columns[idxCol.Offset]
		TruncateIndexValue(&indexedValues[i], idxCol, tblCol)
	}
}

// TruncateIndexValue truncate one value in the index.
func TruncateIndexValue(v *types.Datum, idxCol *model.IndexColumn, tblCol *model.ColumnInfo) {