Getting the current system date and time SELECT SYSDATETIME()Į.
#DTSQL DATE FROM DATETIME SERIES#
The values are returned in series therefore, their fractional seconds might be different. The following examples use the three SQL Server system functions that return current date and time to return the date, time, or both. SYSDATETIME() 13:18:45.3490361Įxamples: Azure Synapse Analytics and Analytics Platform System (PDW) Getting the current system time SELECT CONVERT (time, SYSDATETIME()) Getting the current system date SELECT CONVERT (date, SYSDATETIME())Ĭ. Getting the current system date and time SELECT SYSDATETIME() The following examples use the six SQL Server system functions that return current date and time to return the date, time, or both. DECLARE datetimeoffset = switchoffset (CONVERT(datetimeoffset, GETDATE()), '-04:00') The optimizer will then have accurate cardinality estimates for GETDATE() and will produce a more efficient query plan. 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.
#DTSQL DATE FROM DATETIME ISO#
DATETIMEDIFF with the date part ISOWEEK also returns 1 because ISO weeks begin on Monday. The date data type, on the other hand, only contains date information. When you convert a date value to datetime, extra information is added to the value.This is because the datetime data type contains both date and time information. DATETIMEDIFF with the date part WEEK(MONDAY) returns 1. This article contains examples of converting a date value to a datetime value in SQL Server.
DATETIMEDIFF with the date part WEEK returns 0 because this time part uses weeks that begin on Sunday. We recommend that you precompute the GETDATE value and then specify that value in the query as shown in the following example. The first date falls on a Monday and the second date falls on a Sunday. 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() Facebook gives people the power to share and makes the world more open and connected. 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). Join Facebook to connect with Dtsql Tool and others you may know. 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. SYSDATETIME and SYSUTCDATETIME have more fractional seconds precision than GETDATE and GETUTCDATE.