We consider the complexity of join problems, focusing on equijoins, spatial-overlap joins, and set-containment joins.We use a graph pebbling model to characterize these joins combinatorially, by the ...

Join order optimization is among the most crucial query optimization problems, and its central position is also evident in the new research field where quantum computing is applied to database ...

Hello there! 👋 I'm Luca, a BI Developer with a passion for all things data, Proficient in Python, SQL and Power BI ...

Mr. Lewandowski, who was fired from his post during Donald J. Trump’s 2016 run, has been a divisive and yet consistent presence in his world. By Maggie Haberman and Jonathan Swan Donald J. Trump’s ...

Queries like below cannot finish in a acceptable time, store_sales has 2800w rows, customer_address has 5w rows, for now Doris will create only one cross join node to execute this sql, the time of ...

[!INCLUDE [SQL Server Azure SQL Database Azure SQL Managed Instance](../../includes/applies-to-version/sql-asdb-asdbmi.md)] The Missing Join Predicate event class ...

Abstract: Most existing join ordering algorithms concentrate on join queries with simple join predicates and inner joins only, where simple predicates are those that involve exactly two relations.