Author: SSWUG Research

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Accessing Partitioned Data

(Craig Mullins) One area that tends to confuse some DB2 developers until they gain experience is how DB2 partitioning works. A common question I get goes something like this: “If a table is in a partitioned table space, say four partitions, for example, then to process the table in batch can I run f

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Batch Updates with PL/pgSQL

(David E. Wheeler) The previous article in this series, Practical PL/pgSQL: Managing Ordered Sets, created four functions to simplify the management of ordered collections as many-to-many relationships. The two more complex functions, entry_coll_tag_set() and entry_coll_tag_add(), take an iterative

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Virtual Private Database

(Garry Robinson) Column-level VPD policies can be used to either restrict rows containing sensitive column data (the default behaviour) or show NULLs in the secure column (Column masking behaviour). Column level VPD can only apply to tables and views, not synonyms.