Function tidb_query_datatype::codec::table::cut_row

pub fn cut_row(
    data: Vec<u8>, 
    col_ids: &HashSet<i64>, 
    cols: Arc<[ColumnInfo]>
) -> Result<RowColsDict>

cut_row cuts the encoded row into (col_id,offset,length) and returns interested columns’ meta in RowColsDict

Encoded row can be either in row format v1 or v2.

col_ids must be consistent with cols. Otherwise the result is undefined.