[sql] How can I group by date time column without taking time into consideration

I have a bunch of product orders and I'm trying to group by the date and sum the quantity for that date. How can I group by the month/day/year without taking the time part into consideration?

3/8/2010 7:42:00 should be grouped with 3/8/2010 4:15:00

This question is related to sql sql-server tsql sql-server-2008

The answer is


I believe you need to group by , in that day of the month of the year . so why not using TRUNK_DATE functions . The way it works is described below :

Group By DATE_TRUNC('day' , 'occurred_at_time')

In pre Sql 2008 By taking out the date part:

GROUP BY CONVERT(CHAR(8),DateTimeColumn,10)

Here's an example that I used when I needed to count the number of records for a particular date without the time portion:

select count(convert(CHAR(10), dtcreatedate, 103) ),convert(char(10), dtcreatedate, 103)
FROM dbo.tbltobecounted
GROUP BY CONVERT(CHAR(10),dtcreatedate,103)
ORDER BY CONVERT(CHAR(10),dtcreatedate,103)

CAST datetime field to date

select  CAST(datetime_field as DATE), count(*) as count from table group by CAST(datetime_field as DATE);

Here is the example works fine in oracle

select to_char(columnname, 'DD/MON/yyyy'), count(*) from table_name group by to_char(createddate, 'DD/MON/yyyy');

GROUP BY DATE(date_time_column)


GROUP BY DATEADD(day, DATEDIFF(day, 0, MyDateTimeColumn), 0)

Or in SQL Server 2008 onwards you could simply cast to Date as @Oded suggested:

GROUP BY CAST(orderDate AS DATE)

Examples related to sql

Passing multiple values for same variable in stored procedure SQL permissions for roles Generic XSLT Search and Replace template Access And/Or exclusions Pyspark: Filter dataframe based on multiple conditions Subtracting 1 day from a timestamp date PYODBC--Data source name not found and no default driver specified select rows in sql with latest date for each ID repeated multiple times ALTER TABLE DROP COLUMN failed because one or more objects access this column Create Local SQL Server database

Examples related to sql-server

Passing multiple values for same variable in stored procedure SQL permissions for roles Count the Number of Tables in a SQL Server Database Visual Studio 2017 does not have Business Intelligence Integration Services/Projects ALTER TABLE DROP COLUMN failed because one or more objects access this column Create Local SQL Server database How to create temp table using Create statement in SQL Server? SQL Query Where Date = Today Minus 7 Days How do I pass a list as a parameter in a stored procedure? SQL Server date format yyyymmdd

Examples related to tsql

Passing multiple values for same variable in stored procedure Count the Number of Tables in a SQL Server Database Change Date Format(DD/MM/YYYY) in SQL SELECT Statement Stored procedure with default parameters Format number as percent in MS SQL Server EXEC sp_executesql with multiple parameters SQL Server after update trigger How to compare datetime with only date in SQL Server Text was truncated or one or more characters had no match in the target code page including the primary key in an unpivot Printing integer variable and string on same line in SQL

Examples related to sql-server-2008

Violation of PRIMARY KEY constraint. Cannot insert duplicate key in object How to Use Multiple Columns in Partition By And Ensure No Duplicate Row is Returned SQL Server : How to test if a string has only digit characters Conversion of a varchar data type to a datetime data type resulted in an out-of-range value in SQL query Get last 30 day records from today date in SQL Server How to subtract 30 days from the current date using SQL Server Calculate time difference in minutes in SQL Server SQL Connection Error: System.Data.SqlClient.SqlException (0x80131904) SQL Server Service not available in service list after installation of SQL Server Management Studio How to delete large data of table in SQL without log?