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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...
Add Estimated Percentage Complete for database restore in db2 list utilities show detail
When backup is executing and in another session "list utilities show detail" is executed there is e.g. "Estimated Percentage Complete = 30" displayed.
But when restore is performed this estimated percentage is missing. Please add this info for res...
In error message display actual table's column name that is violating NOT NULL definition instead of outputing "TBSPACEID=2, TABLEID=5, COLNO=0"
I am constantly running into this problem when inserting null values into not null table column. Getting out tablespaceid, tableid and colno is time consuming and annoying to constantly check the column name that is defined not null, but null valu...
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...
In our company we are using PostgreSQL, SQL Server, MySQL and DB2. All of database except Db2 support INFORMATION_SCHEMA views. There is pretty easy to write at least basic cross-database SQL to get info from database catalog tables except in Db2....
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...
We are frequently moving data between MS-SQL server and Db2. When data are moved from Db2 to MS-SQL there are no issues. But when data are moved from MS-SQL to DB2 we have frequent problems with varchar and nvarchar data types for data types where...
More and more SQL is stored in repositories and needs to be applied in odd places and orders. One syntax element that supports this is the "IF EXISTS" on a drop statement. This causes a statement to not count as a failure if it finds no object to ...
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
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