is it possible to force an adaptive join with a query hint?OPTION FORCE ORDER improves performance until rows...
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is it possible to force an adaptive join with a query hint?
OPTION FORCE ORDER improves performance until rows are deletedReducing deadlocks with update query hint or other methodQuery hint? for deduplicated CTE in MergeHad to force loop join and don't understand whyHow to force a merge join without a hintHint to force locks between 2 Select clausesOptimize query with join and null predicate [SQL Server]How to hint many-to-many join in SQL Server?Slow JOIN on tables with millions of rows“Warning: The join order has been enforced because a local join hint is used” returned with no Join hints
Is it possible to force a query to use an adaptive join?
I have a parameterised query which has a sub-query that typically selects almost no rows (0 to 4), but occasionally picks 100k.
This is exactly the scenario that an adaptive join is designed for, but sql server doesn't pick this as a query plan.
A query plan of always-hash-join is server-destroying, so my only recourse at the moment is to force the join to be nested loops, and accept that individual worst-case requests will take a bunch of extra seconds to run.
I have an azure sql database at compatability 150, and BATCH_MODE_ON_ROWSTORE=1
sql-server azure-sql-database
asked 3 mins ago
Andrew HillAndrew Hill
1776
add a comment |
Is it possible to force a query to use an adaptive join?
I have a parameterised query which has a sub-query that typically selects almost no rows (0 to 4), but occasionally picks 100k.
This is exactly the scenario that an adaptive join is designed for, but sql server doesn't pick this as a query plan.
A query plan of always-hash-join is server-destroying, so my only recourse at the moment is to force the join to be nested loops, and accept that individual worst-case requests will take a bunch of extra seconds to run.
I have an azure sql database at compatability 150, and BATCH_MODE_ON_ROWSTORE=1
sql-server azure-sql-database
asked 3 mins ago
Andrew HillAndrew Hill
1776
add a comment |
Is it possible to force a query to use an adaptive join?
I have a parameterised query which has a sub-query that typically selects almost no rows (0 to 4), but occasionally picks 100k.
This is exactly the scenario that an adaptive join is designed for, but sql server doesn't pick this as a query plan.
A query plan of always-hash-join is server-destroying, so my only recourse at the moment is to force the join to be nested loops, and accept that individual worst-case requests will take a bunch of extra seconds to run.
I have an azure sql database at compatability 150, and BATCH_MODE_ON_ROWSTORE=1
sql-server azure-sql-database
asked 3 mins ago
Andrew HillAndrew Hill
1776
Is it possible to force a query to use an adaptive join?
I have a parameterised query which has a sub-query that typically selects almost no rows (0 to 4), but occasionally picks 100k.
This is exactly the scenario that an adaptive join is designed for, but sql server doesn't pick this as a query plan.
A query plan of always-hash-join is server-destroying, so my only recourse at the moment is to force the join to be nested loops, and accept that individual worst-case requests will take a bunch of extra seconds to run.
I have an azure sql database at compatability 150, and BATCH_MODE_ON_ROWSTORE=1
sql-server azure-sql-database
sql-server azure-sql-database
asked 3 mins ago
Andrew HillAndrew Hill
1776
asked 3 mins ago
Andrew HillAndrew Hill
1776
asked 3 mins ago
Andrew HillAndrew Hill
1776
asked 3 mins ago
Andrew HillAndrew Hill
1776
asked 3 mins ago
Andrew HillAndrew Hill
1776
1776
add a comment |
add a comment |
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