IBM Data and AI Ideas Portal for Customers


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My votes: Statements (DDL and DML)

Showing 94 of 15429

Parameter 'PCTFREE FOR UPDATE' in Db2 LUW similar to Db2 z/OS

in Db2 z/OS there is a 'PCTFREE FOR UPDATE' parameter. We will need a similar parameter for Db2 LUW. Background: Our datawarehouse application 'IDH' uses many Bi-Temporal tables. An update of any row in the source system will lead to the logical t...
11 months ago in Db2 / Statements (DDL and DML) 0 Under review

An environmental variable that sets the database to use "Enforced" as a default for constraints.

For some shops, constraints are always created as "Enforced". This used to be the default behavior, but the default behavior was changed to "Not Enforced" in Db2 V11.Creating an environmental variable would allow the teams to choose the default be...
about 1 year ago in Db2 / Statements (DDL and DML) 2 Functionality already exists

Make multiple DDL changes transactional

Why is it useful? When complex changes are made in DDL and one of the changes fails, it can get pretty hard to revert the issue. Who would benefit from it? Implementing this idea would tremendously help database administrators. How should it work?...
about 1 year ago in Db2 / Statements (DDL and DML) 2 Functionality already exists

Db2 partitioned table, set range of partitions to read only or read write mode

Table data is partitioned as specified in the PARTITION BY clause of the CREATE TABLE statement.At this moment if we create partitioned table, we can only set whole table to read only access using SET INTEGRITY FOR table OFF READ ACCESSor let it b...
over 1 year ago in Db2 / Statements (DDL and DML) 0 Future consideration

Optimizer does not use HIGH2KEY/LOW2KEY for columns with COLCARD 1

Optimization issue if a business_time_oriented table has only one row. In syscat.columns the content of the business_time columns are detected (high2key, low2key) but the value can not be found in the distribution statistics. This leads default fi...
over 1 year ago in Db2 / Statements (DDL and DML) 1 Future consideration

db2expln stopped working from db2v11.5.7.0 onward on HADR STANDBY

db2expln, doesn't write / update and tables on the database and it was working till db2 v11.5.5 on STANDBY RO enabled, from v11.5.7.0 it stopped working, many time there is a need to check explain out on STANDBY RO enabled
over 1 year ago in Db2 / High Availability and/or Disaster Recovery / Statements (DDL and DML) 6 Functionality already exists

Bufferpool and tablespace creation authority to DBADM

Create of a tablespace and bufferpool requires SYS* authorities. It made sense in earlier days when SYS folks needed to create filesystem, mount point etc. With automatic storage enabled database, it makes a perfect sense to delegate these authori...
almost 2 years ago in Db2 / Statements (DDL and DML) 0 Future consideration

Enhance ALTER STOGROUP DROP ‚storage-path’ with optional specification of the Path_ID

As you may ADD the same path multiple times to a storage group (in order to have multiple containers of a single tablespace within that path), it should be possible to even DROP a single reference to that path from the storage group as well! But s...
almost 2 years ago in Db2 / Statements (DDL and DML) 0 Not under consideration

Add generated always for each row on update as row change SESSION_USER

Currently exists in Db2 to change current timestamp on INSERT and UPDATE with generated statement like: create table myschema.mytable (id int, last_timestamp timestamp not null generated always for each row on update as row change timestamp) inser...
about 2 years ago in Db2 / Statements (DDL and DML) 1 Future 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

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