Predicate Pushdown gets its name from the fact thatportions of SQL statements, ones that filter data, are referred to as predicates. ... It can improve query performance by reducing the amount of data read (I/O)
This change was introduced in SQL Server 2022 (all editions) and included in Azure SQL Database and Azure SQL Managed Instance. Enhanced spinlock algorithms Spinlocks are a huge part of the consistency inside the engine for multiple threads. Internal adjustments to the Database Engine make ...
Columnstore rowgroup elimination for the prefix ofLIKEpredicates, for examplecolumn LIKE 'string%'. Segment elimination isn't supported for non-prefix use ofLIKEsuch ascolumn LIKE '%string'. For more information on added features, seeWhat's new in SQL Server 2022. ...
A semijoin that uses an index scan can now be pushed if it meets the conditions just noted for a pushed outer join, and it uses the firstMatch strategy (see Optimizing IN and EXISTS Subquery Predicates with Semijoin Transformations). These additional improvements are made in NDB 8.0.21: ...
Shared users and grants are stored in thendb_sql_metadatatable, whichndb_restoreby default does not restore in NDB 8.0; you can specify the--include-stored-grantsoption to cause it to do so. SeeSection 25.6.13, “Privilege Synchronization and NDB_STORED_USER”, for more information. ...
You can run queries on the data using SQL in your maps or external systems like Apache Kafka. You can also use the predicates API to filter and retrieve data in your maps. See theDistributed Queries section. You can run computational tasks on different cluster members (distributed computing);...
information we’re working with. Predicates include a value or condition called an expression. A clause can be a statement if you’re writing a really basic one. There are also operators, as we’ll see later on, which let us compare equality or ranges of data or treat information in ...
In a knowledge graph, nodes can be resources with unique identifiers, or they can be values with literal strings, integers, or whatever. The edges (also called predicates or properties) are the directed links between nodes. The “from node” of an edge is called the subject. The “to node...
You can run queries on the data using SQL in your maps or external systems like Apache Kafka. You can also use the predicates API to filter and retrieve data in your maps. See theDistributed Queries section. You can run computational tasks on different cluster members (distributed computing);...
Also available in Synapse Analytics. SeeQuery performance. Improved columnstore segment eliminationAll columnstore indexes benefit from enhanced segment elimination by data type. Data type choices might have a significant impact on query performance based common filter predicates for queries on the columnstor...