Why one tiny scalar function can turn a 1-second query into a 10-minute outage — and how to fix it without rewriting your app. A senior engineer once handed me a SQL ticket marked "P0 — production DB ...
Abstract: Service function chains aim to replace proprietary and expensive appliances by similar ones provided through virtual services running over some virtualization technique. Such a replacement ...
Choose the Right Join Type: Use INNER JOIN when possible, as it’s generally faster than LEFT JOIN or OUTER JOIN. Ensure that your joins are based on indexed columns. Minimize Joins: Avoid unnecessary ...
,RTRIM(case when NUM_SERIES_PACS2 is NULL then 0 else NUM_SERIES_PACS2 end) as NUM_SERIES_PACS2 ,RTRIM(ISNULL(num_series,0)) as num_series_PACS1 ,RTRIM(case when secount.NUM_OBJECT_SERIES_PACS2 is ...
rbygrave changed the title ExpressionList.isNull and SoftDelete ExpressionList.isNull and SoftDelete is missing the and deleted = false predicate in the exists subquery Nov 1, 2017 rbygrave changed ...
Abstract: Expressing complex OLAP queries involving nested expressions using normal group-by, aggregation, and joins can be extremely difficult. We propose a technique that translates nested query ...
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