![]() The examples use the AdventureWorks database. These examples use different types of expressions as arguments for the number and date parameters. Using expressions as arguments for the number and date parameters Incrementing more than one level of datepart in one statementĮach of these statements increments datepart by a number large enough to additionally increment the next higher datepart of date: DECLARE datetime2 Ĭ. Incrementing datepart by an interval of 1Įach of these statements increments datepart by an interval of 1: DECLARE datetime2 = ' 13:10:10.1111111' 1 millisecond 13:10:10.1121111ĭATEADD does not allow addition for time zone offset. SELECT '150 nanoseconds', is the result set. ![]() These statements add a datepart of millisecond, microsecond, or nanosecond. A number between 1 and 49 will round down to 0, and a number from 50 to 99 rounds up to 100. For a datepart of nanosecond, number must be 100 before the fractional seconds of date increase. The time, datetime2, and datetimeoffset data types have a maximum scale of 7 (.1234567). Milliseconds have a scale of 3 (.123), microseconds have a scale of 6 (.123456), and nanoseconds have a scale of 9 (.123456789). For a datepart of millisecond and a number value less than -30001, or more than +29998, DATEADD performs its addition beginning at one minute.ĭATEADD does not allow addition for a datepart of microsecond or nanosecond for date data types smalldatetime, date, and datetime.For a datepart of millisecond and a number value between -30001 and +29998, DATEADD makes no changes.For a datepart of second, and a number value less than -30, or more than +29, DATEADD performs its addition beginning at one minute.For a datepart of second, and a number value between -30 and +29, DATEADD makes no changes.For a smalldatetime date value, the following apply: The seconds part of a smalldatetime value is always 00. Return Values for a smalldatetime date and a second or Fractional Seconds datepart DATEADD returns the following error message: " Msg 517, Level 16, State 1, Line 1 Adding a value to a 'datetime' column caused overflow." SELECT DATEADD(year,2147483647, '20060731') In the following statements, the number value added to the date value exceeds the range of the date data type. SELECT DATEADD(year,-2147483649, '20060731') ĭATEADD will not accept a date argument incremented to a value outside the range of its data type. Arithmetic overflow error converting expression to data type int." SELECT DATEADD(year,2147483648, '20060731') These statements both return the following error message: " Msg 8115, Level 16, State 2, Line 1. ![]() In the following statements, the argument for number exceeds the range of int by 1. The number argument cannot exceed the range of int. For example, September has 30 (thirty) days therefore, these statements return 00:00:00.000: SELECT DATEADD(month, 1, '20060830') Then, DATEADD returns the last day of the return month.
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