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| author | Daniil Cherednik <dcherednik@ydb.tech> | 2024-01-11 14:38:28 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-01-11 16:38:28 +0300 |
| commit | 4366d88bef9360d9754e77eaa1f4a25d046a9cbd (patch) | |
| tree | 934216cb0060c7232167407f122e73ad688909e2 /yt/cpp/mapreduce | |
| parent | bd18c42d5e79ec8235e5d0fc6ec3341c13212aab (diff) | |
| download | ydb-4366d88bef9360d9754e77eaa1f4a25d046a9cbd.tar.gz | |
Allow UPDATE ON, UPSERT with partial set of input... (#894)
* Allow UPDATE ON, UPSERT with partial set of input...
columns in case of unique index.
Example:
table: pk, fk1, fk2. Uniq index: fk1, fk2.
To perform UPSERT INTO table (pk, fk1) we
need to read missed value fk2 from main table to
create lookup uniq index key.
Right now we have two lookups in to main table
- first one has been described above
- second we need to make to remove old value
from index. It will be fixed in a next step.
* fix
Diffstat (limited to 'yt/cpp/mapreduce')
0 files changed, 0 insertions, 0 deletions