IBM Data and AI Ideas Portal for Customers


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Db2

Showing 1402

"delete cascade" does not work with "not enforced"

The option "not enforced" on a foreign key invalidates an already set "on delete cascade" option, although this is not visible anywhere within the data model or documentation. In my opinion, setting one of these options should prohibit the other o...
over 1 year ago in Db2 / Tables/Index (Range MQ MDC etc.) 0 Not under consideration

Case TS000932532 - Load should be able to bypass a GENERATED-ALWAYS-from-variable column

ProblemA load on a table containing a certain type of GENERATED ALWAYS column fails with the very odd message "Unexpected load gencol section".Research pointed out that LOAD cannot handle in any way a GENERATED ALWAYS column getting its informatio...
over 6 years ago in Db2 / Utilities (Export Import Load db2look etc) 0 Not under consideration

LOAD should allow collecting STATISTICS without USE PROFILE option for row based tables

LOAD collects "default" statistics like auto-runstats when loading into BLU (RUNSTATS ... WITH DISTRIBUTION AND SAMPLED DETAILED INDEXES ALL).I assume this got not changed because the fear of incompatibility with existing behavior. Therefore pleas...
over 6 years ago in Db2 / Utilities (Export Import Load db2look etc) 0 Not under consideration

ALTER TABLE LOCKSIZE TABLE for BLU tables

ALTER TABLE LOCKSIZE TABLE is an easy way to save lock list and lock acquire for tables that just get accessed by a single application at a given time.
over 6 years ago in Db2 / BLU Acceleration 0 Not under consideration

Add ALTER COLUMN options to modify numeric column length and allow rename column names for ((bi)temporal) column organized tables

Db2’s capabilities to perform schema changes on any form of ((bi)temporal) column organized tables lacks behind it’s row organized counterparts. This prevents effective database schema evolution and therefore limits the use of column organized tab...
about 2 years ago in Db2 / Statements (DDL and DML) 0 Not under consideration

CSV or Delimited result set function in SQL

My result set final format needs to be CSV. It would be awesome if I could use SELECT CSV(*) FROM TABLEA to return my result set as a column of CSV format. so for instance I have a requirement to produce a csv file of variable record lengths SELEC...
over 3 years ago in Db2 / Data Types 0 Future consideration

Add flag into db2advis to ignore existing indexes

When troubleshooting performance issues on tables with a high number of indexes, the db2advis tool kind of falls flat. What we have done to get around this is to restore a backup of the database in question, drop all indexes, and then run the db2a...
almost 6 years ago in Db2 / Utilities (Export Import Load db2look etc) 0 Not under consideration

DMC format for time metrics needs to be smarter for values bellow ms range

This started as a discussion in IBM Db2 community. https://community.ibm.com/community/user/hybriddatamanagement/communities/community-home/digestviewer/viewthread?GroupId=2983&MessageKey=8802cd2f-d91d-46aa-a114-aa6cc5ec88df&CommunityKey=e...
over 3 years ago in Db2 / Data Management Console 0 Future consideration

Rewind the current database from logs

Opposite to roll forward, it will be great to have the possibility to perform a rewind of a database (in roll-forward state or normal one), to a previous state with the logs. It will be like uncommit, or a general rollback.
over 4 years ago in Db2 / Backup/Restore/ Rollforward/ Recover 0 Not under consideration

Make DB2 federation option DB2_TWO_PHASE_COMMIT compatible with HOST and PORT options

The new Db2 11.5 HOST and PORT options (see https://www.ibm.com/docs/en/db2/11.5?topic=options-database) remove the need to catalog federated source Db2 databases for standard connections. This simplifies configuration. However, for two phase comm...
9 months ago in Db2 / Federation 0

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