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Reorg pending after three ALTER TABLE statements is not useful in 24x7 environment
After three ALTER TABLE statements (depending on the clause, but an error can be forced by changing type from VARCHAR to CHAR ) table switches into reorg pending state. This state can only be resolved by an offline reorg.Additional problem is that...
Submitted on behalf of Gregor Hack (email@example.com).Customer would like to see DROP ... IF EXISTS functionality supported, similar to the way it is currently supported by SQL Server, MySQL, and Postgres.
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...
need to provide a RENAME SCHEMA statement (other database products provide this)
Need RENAME SCHEMA other databases other than DB2 LUW (i.e. MaxDB from SAP) provide a statement RENAME SCHEMA to rename a schema like a RENAME TABLESPACE/TABLE/INDEX. Needed on all supported operating systems.
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 gener...
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
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 ...
Consideration of Statistical Views for INSERT with Sub-SELECT
We try to improve the performance on an INSERT with an underlying complex subselect eg. "INSERT INTO table "Therefore we created a statistical view through which the optimizer should be able to get more distribution statistics and build a better a...
SQLCODE SQL0302N should give hint which parameter is too long.
Scenario: prepared statementsError: host variable too longProblem: SQL0302N should give a hint which parameter is affected.Details:Using prepared statements with parameter markers such as INSERT INTO TESTTAB (COL1, COL2) VALUES (?, ?)"); DB2 throw...
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