Benefits of SQL Server 2017 and 2019 | IDERA

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Benefits of SQL Server 2017 and 2019

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© 2019 IDERA, Inc. All rights reserved.
© 2021 IDERA, Inc. All rights reserved.
BENEFITS OF SQL SERVER
2017 & 2019
The new features of SQL Server 2017 and 2019 include the following:

© 2019 IDERA, Inc. All rights reserved.
© 2021 IDERA, Inc. All rights reserved.
Batch Mode Execution
SQL Server 2019 uses only one
parallelism zone for less processing.
Version 2019 also uses columnstore
indexes for smaller query results since
queries now only store unique values.

© 2019 IDERA, Inc. All rights reserved.
© 2021 IDERA, Inc. All rights reserved.
Table-Valued Function
Interleaved Execution
With interleaved execution,
SQL Server 2017 runs multi-statement
table-valued functions first and then passes
the row estimates to the rest of the plan,
for improved memory grant accuracy.

© 2019 IDERA, Inc. All rights reserved.
© 2021 IDERA, Inc. All rights reserved.
Adaptive Memory Grants
Adaptive memory grants can reduce the
number of pages spilled to TempDB as
SQL Server reviews its memory use after
a query, although results can still be
inconsistent.

© 2019 IDERA, Inc. All rights reserved.
© 2021 IDERA, Inc. All rights reserved.
Scalar Function Inlining
SQL Server 2019 automatically rewrites
row-based scalar user-defined functions
into set-based functions (and also rewrites
the related queries). Microsoft is still
debugging this new feature.

© 2019 IDERA, Inc. All rights reserved.
© 2021 IDERA, Inc. All rights reserved.
Adaptive Joins
Adaptive joins for columnstore indexes in
SQL Server 2017 expanded to rowstore
indexes for 2019. Both require
SELECT queries with joins that can work
with nested loops or hash joins.

© 2019 IDERA, Inc. All rights reserved.
© 2021 IDERA, Inc. All rights reserved.
Automatic Tuning
Automatic tuning storesmultiple query
plans with Query Store to measure
their performance to determine
which one is better.

© 2019 IDERA, Inc. All rights reserved.
© 2021 IDERA, Inc. All rights reserved.
Microsoft is doing well with its latest version of SQL Server,
which can reduce its hosting costs for Azure if done right. This objective is
crucial for making Azure more cost competitive with Amazon AWS and
other on-premises database platforms.

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Benefits of SQL Server 2017 and 2019 | IDERA

2. © 2019 IDERA, Inc. All rights reserved. © 2021 IDERA, Inc. All rights reserved. Batch Mode Execution SQL Server 2019 uses only one parallelism zone for less processing. Version 2019 also uses columnstore indexes for smaller query results since queries now only store unique values.

3. © 2019 IDERA, Inc. All rights reserved. © 2021 IDERA, Inc. All rights reserved. Table-Valued Function Interleaved Execution With interleaved execution, SQL Server 2017 runs multi-statement table-valued functions first and then passes the row estimates to the rest of the plan, for improved memory grant accuracy.

4. © 2019 IDERA, Inc. All rights reserved. © 2021 IDERA, Inc. All rights reserved. Adaptive Memory Grants Adaptive memory grants can reduce the number of pages spilled to TempDB as SQL Server reviews its memory use after a query, although results can still be inconsistent.

5. © 2019 IDERA, Inc. All rights reserved. © 2021 IDERA, Inc. All rights reserved. Scalar Function Inlining SQL Server 2019 automatically rewrites row-based scalar user-defined functions into set-based functions (and also rewrites the related queries). Microsoft is still debugging this new feature.

6. © 2019 IDERA, Inc. All rights reserved. © 2021 IDERA, Inc. All rights reserved. Adaptive Joins Adaptive joins for columnstore indexes in SQL Server 2017 expanded to rowstore indexes for 2019. Both require SELECT queries with joins that can work with nested loops or hash joins.

7. © 2019 IDERA, Inc. All rights reserved. © 2021 IDERA, Inc. All rights reserved. Automatic Tuning Automatic tuning storesmultiple query plans with Query Store to measure their performance to determine which one is better.

8. © 2019 IDERA, Inc. All rights reserved. © 2021 IDERA, Inc. All rights reserved. Microsoft is doing well with its latest version of SQL Server, which can reduce its hosting costs for Azure if done right. This objective is crucial for making Azure more cost competitive with Amazon AWS and other on-premises database platforms.

Benefits of SQL Server 2017 and 2019 | IDERA

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