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sql: support partitioned hash sharded index #76358

Merged
merged 2 commits into from
Feb 22, 2022
Merged

sql: support partitioned hash sharded index #76358

merged 2 commits into from
Feb 22, 2022

Commits on Feb 21, 2022

  1. sql: support partitioned hash sharded index 

    Validations are added based on 2 rules:
1. hash sharded index cannot work with any explicit partitioning
2. hash sharded index cannot have partitioning field as explicit key column

Also have a minor fix on how we calculate number of implicit columns.

Release note (sql change): Previously, crdb blocked users from creating
hash sharded index in all kinds of partitioned tables including implict
partitioned tables using `PARTITION ALL BY` or `REGIONAL BY ROW`. Now
we turn on the support of hash sharded index in implicit partitioned
tables. Which means primary key cannot be hash sharded if a table is
explicitly partitioned with `PARTITION BY` or an index cannot be hash
sharded if the index is explicitly partitioned with `PARTITION BY`.
Paritioning columns cannot be placed explicitly as key columns of a
hash sharded index as well, including regional-by-row table's `crdb_region`
column.
    @chengxiong-ruan
    chengxiong-ruan committed Feb 21, 2022
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  2. sql: presplit implicit partitioned list hash sharded index 

    Release note (sql change): When a hash sharded index is partitioned,
ranges are pre-split within every single possible partition on shard
boundaries. Each partition is split up to 16 ranges, otherwise split
into the number bucket count ranges. Note that, only list partition
is being presplit, we don't presplit for range partition.
    @chengxiong-ruan
    chengxiong-ruan committed Feb 21, 2022
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