IBM Data and AI Ideas Portal for Customers


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Statements (DDL and DML)

Showing 94

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...
12 months ago in Db2 / Statements (DDL and DML) 0 Under review

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

Full support for aggregate function with DISTINCT in OLAP SPECIFICATION

Use of DISTINCT with e.g. COUNT function in OLAP specification (PARTITION BY clause) returns error SQL0441N (SQLCODE -441). Due to the fact that Db2 does NOT support the use of DISTINCT option in such cases, we have a major impact with COGNOS gene...
over 3 years ago in Db2 / Statements (DDL and DML) 0 Future consideration

Allow CREATE/REPLACE for users other than owner

Currently on Db2 LUW CREATE OR REPLACE is only allowed for the owner of a database object. CREATE OR REPLACE authorization should be opened up to allow create/replace by anyone who has the ability to drop the object and to create the object with a...
over 6 years ago in Db2 / Statements (DDL and DML) 3 Not under consideration

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

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

TRANSFER OWNERSHIP for entire schema

During SAP system migration all objects in a schema need TRANSFER OWNERSHIP. This takes quite long (many minutes) for > 100.000 objects.
over 6 years ago in Db2 / Statements (DDL and DML) 0 Not under consideration

Fill gap with Oracle optimizer on RP tables

DB2 optimizer in v10.5/v11.1 has still several weaknesses in generating correct plan when using RP tables, because it bases its plan only on global stats when partition (data and indexes) stats are available. Case TS001150102
about 6 years ago in Db2 / Statements (DDL and DML) 1 Not under consideration

Allow modification of column-organized columns

Currently, in column-organized tables you cannot alter or rename columns and you even cannot drop columns. The only allowed operation is to add a column. This renders the column-based-tables pretty useless because in a normal environment, it must ...
over 6 years ago in Db2 / Statements (DDL and DML) 0 Not under consideration

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

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