![]() In addition, use the OPTION (RECOMPILE) query hint to force the query optimizer to recompile a query plan the next time the same query is executed. We recommend that you precompute the GETDATE value and then specify that value in the query as shown in the following example. ![]() Using SWITCHOFFSET with the function GETDATE() can cause the query to run slowly because the query optimizer is unable to obtain accurate cardinality estimates for the GETDATE value. Views and expressions that reference this function in a column cannot be indexed. Transact-SQL statements can refer to GETDATE anywhere they can refer to a datetime expression. Transact-SQL syntax conventions Syntax GETDATE() Use AT TIME ZONE in Azure SQL Database or Azure Synapse Analytics if you need to interpret date and time information in a non-UTC time zone.įor an overview of all Transact-SQL date and time data types and functions, see Date and Time Data Types and Functions (Transact-SQL). SYSDATETIME, SYSUTCDATETIME, and SYSDATETIMEOFFSET can be assigned to a variable of any of the date and time types.Īzure SQL Database (with the exception of Azure SQL Managed Instance) and Azure Synapse Analytics follow UTC. SYSDATETIMEOFFSET includes the system time zone offset. I'm just trying to get the correct output for D30 D60 and D90 before I do that.SYSDATETIME and SYSUTCDATETIME have more fractional seconds precision than GETDATE and GETUTCDATE. I'm also aware I will have to do the table joins for this project also. SUM(CASE WHEN QUARTER(DateOfPurchase) = 4 THEN 1 ELSE 0 END) AS 'Q4' SUM(CASE WHEN QUARTER(DateOfPurchase) = 3 THEN 1 ELSE 0 END) AS 'Q3', ![]() SUM(CASE WHEN QUARTER(DateOfPurchase) = 2 THEN 1 ELSE 0 END) AS 'Q2', ![]() SUM(CASE WHEN QUARTER(DateOfPurchase) = 1 THEN 1 ELSE 0 END) AS 'Q1', The code to my last project is below, if that helps at all. Other than the number in the first column being the same. I have tried a couple different variants of this code, which pretty much return the same result. Which returns: DATEDIFF(now(), DateOfPurchase D30 D60 D90 SUM(CASE WHEN DateOfPurchase >= 61 AND DateOfPurchase = 90 THEN 1 ELSE 0 END) AS 'D90' SUM(CASE WHEN DateOfPurchase = 31 AND DateOfPurchase = 60 THEN 1 ELSE 0 END) AS 'D60', I have tried SELECT DATEDIFF(now(), DateOfPurchase), I've been speaking with my instructor regarding this, and he said my code for this would be similar to my code for my last project. My previous project was to show purchases per quarter, which is why the 2007 data is in there. So, I'm only going to have 1 purchase per 30 day period to show. My table looks like Customer ID DateOfPurchase SongID I have entered Purchase data into my Purchases table that are 30 60 and 90 days apart. Save your query as dba1lesson10project2.sql and then hand in the project. Similarly, D90 data should be for purchases from 61 to 90 days ago, not everything purchased in the last 90 days.ĭo not create a separate table or a view. D60 data should be for purchases from 31 to 60 days ago, not everything purchased in the last 60 days. ![]() Note that each time period has separate data. The results might look similar to the following: Album D30 D60 D90 You can use this function to write your accountant's requested pivot query. MySQL subtracts the DateOfPurchase from "now" and returns an integer representing the number of days between those two dates. SELECT DATEDIFF(now(), DateOfPurchase) FROM Purchases MySQL has a function that can be used to compare two dates - DATEDIFF: He showed the accountant, and she said she wants to see a similar query, but with sales in the last 30, 60, and 90 days. Your boss loved the pivot query you wrote in the first project. ![]()
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