一旦成功连接到数据库,我们可以执行SQL查询语句。在本例中,我们将使用SELECT语句查询当前时间。 以下是查询当前时间的SQL语句: SELECTGETDATE()ASCurrentDateTime; 1. 代码解释: SELECT: 用于选择查询结果。 GETDATE(): 内置函数,用于获取当前日期和时间。 AS CurrentDateTime: 别名,用于将查询结果列的名称设置为"Cur...
以下是 `current_date` 在 SQL Server 中的一些基本用法: 1. **获取当前日期**: ```sql SELECT current_date; ``` 这将返回当前的日期。 2. **与日期格式化结合使用**: 如果你想以特定的格式显示日期,可以使用 `CONVERT` 函数。例如,要获取当前日期并以 "YYYY-MM-DD" 的格式显示: ```sql SELECT ...
CURRENT_TIMESTAMP 會從執行 SQL Server 執行個體之電腦的作業系統衍生此值。 注意 SYSDATETIME 和SYSUTCDATE 比GETDATE 和GETUTCDATE 具有更高的精確度,以小數秒數有效位數來度量。 SYSDATETIMEOFFSET 函式包含系統時區位移。 您可以將 SYSDATETIME、SYSUTCDATETIME 和SYSDATETIMEOFFSET 指派給任何日期和時間類型的變數...
4. SQL Server Finally, let’s discuss five functions to obtain the current date and time in SQL Server. 4.1. Using GETDATE and CURRENT_TIMESTAMP The GETDATE and CURRENT_TIMESTAMP functions are aliases for each other that extract the current local date and time: -- GETDATE function SELECT...
SQL Server date and time functions FunctionDescription GETDATE() Returns the current date and time DATEPART() Returns part of the date DATEDIFF() Calculates the difference between two dates SYSUTCDATETIME Returns the system date and time in UTC CONVERT() Converts date and time to different forma...
ExampleGet your own SQL Server Return the current date and time: SELECT CURRENT_TIMESTAMP; Try it Yourself » Definition and UsageThe CURRENT_TIMESTAMP function returns the current date and time, in a 'YYYY-MM-DD hh:mm:ss.mmm' format....
CURRENT_TIMESTAMP is a nondeterministic function. Views and expressions that reference this column cannot be indexed. Examples The following examples use the six SQL Server system functions that return current date and time to return the date, the time, or both. The values are returned in series...
Of course, sometimes the date itself is not enough. Or it’s not exactly what you need. You might want to get thetime— or thetime and the datecombined. To get thecurrent timeinhours:minutes:secondsformat (e.g.15:43:01) in SQL, you’ll have to run this function: ...
I have a simple select statement (see below). All i want is to pass the current date as an argument in my where clause. below does not work. Any ideas...
SQL Server Subtract hours from current date time and compare to column value whose data type is ...