TiDB KV Mapping

Data

Key： tablePrefix_rowPrefix_tableID_rowID
Value: [col1, col2, col3, col4]

Unique Index

Key: tablePrefix_idxPrefix_tableID_indexID_indexColumnsValue
Value: rowID

Non-Unique Index

Key: tablePrefix_idxPrefix_tableID_indexID_ColumnsValue_rowID
Value: nil

var (
    tablePrefix     = []byte{'t'}
    recordPrefixSep = []byte("_r")
    indexPrefixSep  = []byte("_i")
)