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graphql-engine/server/src-lib/Database/MSSQL
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Samir Talwar 15ac52ded4 server: Fix the Analyze feature for SQL Server. 
The "Analyze" feature for SQL Server only partially worked. It would show the SQL generated, but not the execution plan. This is because SQL Server doesn't support generating a plan for prepared statements with parameters.

To work around this, we restructure the query as one without parameters. Instead, we replace each parameter with a variable. We declare the variables but don't set values. We then plan _that_, which works.

We run all this in a single query because local variables only last for a single transaction/batch.

This feature does not work for stored procedures.

[NDAT-582]: https://hasurahq.atlassian.net/browse/NDAT-582?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/10125
GitOrigin-RevId: a4b45b9b207456ff4fbd1b69b008e93f87346342
2023-08-17 12:51:57 +00:00
..
Pool.hs server: Avoid partial fields wherever possible. 2023-07-28 10:54:24 +00:00
Transaction.hs server: Fix the Analyze feature for SQL Server. 2023-08-17 12:51:57 +00:00