tidb_query: fix parse time from a string in format yymmddhhmm (#6440)
tidb_query: fix parse time from a string in format yymmddhhmm (#6440)

Signed-off-by: Lonng <8ed72e0d00108201f79dd2bb5270f106b3e5c19c@lonng.org>
c4pt0r/tikv,pingcap/tikv,pingcap/tikv,BusyJay/tikv,BusyJay/tikv,BusyJay/tikv,BusyJay/tikv