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1
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1answer
48 views

Computed column 'IsWeekend' in table <table_name> cannot be persisted because the column is non-deterministic

I'm in the process of tuning a query in SQL Server 2012 that is spilling to tempdb due to an incorrect cardinality estimation when using the DATENAME() function on a column to check if the data is ...
11
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1answer
298 views

How deterministic is execution plan creation in SQL Server?

Given the following constants: The same database with the same structure (tables, indexes, etc) The same data The same SQL Server and hardware configuration The same statistics The same SET options ...
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2answers
4k views

MySQL Deterministic Procedures

As a general rule, should I be declaring all my stored procedures with the DETERMINISTIC keyword if they are indeed deterministic? It seems to me that the majority of stored procedures will be ...
5
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1answer
174 views

Is my function nondeterministic one

I have two functions: fn_Without_Param and fn_With_Param CREATE FUNCTION [dbo].[fn_Without_Param] ( ) ... INNER JOIN .. ON .. AND SubmitDate = CONVERT( varchar(10), GETUTCDATE(), 101 ) and /* ...