dateadd関数を用いることで、すでにあるカラムに、時間や日数を加えたり減らすことができます。例えば日本はutc+9なので、標準時間から日本の時間にするには、dateaddを用いて日本時間に直す必要があります。またwhere条件にもdateaddを用いることができるため ...

The DATEADD function performs time and date calculations for matching properties having date types. Use the DATEADD function to obtain dates and times in a specified amount of time before the present.

SQL is a tool that is widely used in the manipulation of data and featuring in the relational database. They are applied in querying, manipulating as well as reporting data and it is commonly used by ...

SQL> select dateadd(-55.499 second to timestamp '01.01.2000 00:00:55.499') from rdb$database; 2000-01-01 00:00:00.4990 SQL> select dateadd(-55.501 second to timestamp ...