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"INDEX ONLY" index scan should be used instead of tablespace scan when it performs better.
We were analyzing the optimization of the following query: SELECT MAX(A.COL1) FROM MY_TABLE A WHERE A.COL2= ? WITH UR ; There is an index that exists for MY_TABLE that has a first column of COL1 and a second column of COL2. DB2 was using a tablesp...
InfoSphere Information Analyzer -- Multi-column key analysis (timestamp)
When you run twice or more times a multi-column key analysis there is no way to know which combination of columns belongs to each analysis. For that reason, I suggest adding a timestamp column to the final results.
Preemption based on concurrent number of slots used by a user
LSF should support a preemption policy that supports a preemption order based on the number of job slots used by each user's jobs. In other words ... when a higher priority job needs to preempt a lower priority job, jobs from users whose jobs use ...
read multiple table names in oracle partitioning mode in Oracle connector stage
In IS v9.1.2 DataStage is throwing an error while reading two physically partitioned tables from oracle database using Oracle connector stage when oracle partition mode is settled . This functionality is not available in oracle connector stage. Er...
I would like a file stage that would dynamically create flat files based on a field or a combination of fields within the input data. By dynamic I mean that if the field being used to determine the split today has 3 unique values then 3 separate f...
over 6 years ago
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