[release/10.0] Fallback to OPENJSON with many parameters#37320
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cincuranet merged 2 commits intodotnet:release/10.0from Dec 9, 2025
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[release/10.0] Fallback to OPENJSON with many parameters#37320cincuranet merged 2 commits intodotnet:release/10.0from
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roji
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SamMonoRT
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Customer reported regression. Approved.
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This was referenced Dec 9, 2025
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Backport of #37234.
Fixes #37185.
Description
EF 10 changed the default translation for parameterized collections from single parameter and JSON function to multiple parameters. To not go over the limit of parameters (2100) on SQL Server we introduced logic that counts parameters. Unfortunately this logic was not taking into account total number of parameters, but only local sums.
Customer impact
Query fails to execute because of >2100 parameters in query.
How found
Customer reported on 10.0.
Regression
Yes.
Testing
Tests added.
Risk
Low. Quirk added.