NOW ( ) Function provides you the current date and time according to your computer's system date and time.
The SQL syntax for the Now ( ) function is:
The Now function returns a date and time that are stored in system.
Understand with Example
The Tutorial helps you to illustrate a example from SQL NOW( ) Function. In this Tutorial, we create a table 'Stu_Table' using create statement.
create table Stu_Table(Stu_Id varchar(2), Stu_Name varchar(15), Stu_Class varchar(10), sub_id varchar(2), marks varchar(3)); |
Insert Data into Stu_Table
The insert into statement is used to add records or rows into the table 'Stu_Table'.
SQL statement to insert data into table:
insert into Stu_Table values(1,'Komal',10,1,45); insert into Stu_Table values(2,'Ajay',10,1,56); insert into Stu_Table values(3,'Rakesh',10,1,67); insert into Stu_Table values(1,'Komal',10,2,47); insert into Stu_Table values(2,'Ajay',10,2,53); insert into Stu_Table values(3,'Rakesh',10,2,57); insert into Stu_Table values(1,'Komal',10,3,45); insert into Stu_Table values(2,'Ajay',10,3,56); insert into Stu_Table values(3,'Rakesh',10,3,67); insert into Stu_Table values(1,'Komal',10,4,65); insert into Stu_Table values(2,'Ajay',10,4,56); insert into Stu_Table values(3,'Rakesh',10,4,37); insert into Stu_Table values(1,'Komal',10,5,65); insert into Stu_Table values(2,'Ajay',10,5,46); insert into Stu_Table values(3,'Rakesh',10,5,63); |
Stu_Table
Records in the table:
+--------+----------+-----------+--------+-------+ | Stu_Id | Stu_Name | Stu_Class | sub_id | marks | +--------+----------+-----------+--------+-------+ | 1 | Komal | 10 | 1 | 45 | | 2 | Ajay | 10 | 1 | 56 | | 3 | Rakesh | 10 | 1 | 67 | | 1 | Komal | 10 | 2 | 47 | | 2 | Ajay | 10 | 2 | 53 | | 3 | Rakesh | 10 | 2 | 57 | | 1 | Komal | 10 | 3 | 45 | | 2 | Ajay | 10 | 3 | 56 | | 3 | Rakesh | 10 | 3 | 67 | | 1 | Komal | 10 | 4 | 65 | | 2 | Ajay | 10 | 4 | 56 | | 3 | Rakesh | 10 | 4 | 37 | | 1 | Komal | 10 | 5 | 65 | | 2 | Ajay | 10 | 5 | 46 | | 3 | Rakesh | 10 | 5 | 63 | +--------+----------+-----------+--------+-------+ |
Query
In this example, the use of Now function is used to returns the current date and time according to your computer's date and time. The Now( ) function return you the current date and time in double precision .
select stu_id, stu_name, GROUP_CONCAT(marks) as marks, sum(marks)as total ,avg(marks) as per, now() from stu_table group by stu_id |
Result
+--------+----------+----------------+-------+------+---------------------+ | stu_id | stu_name | marks | total | per | now() | +--------+----------+----------------+-------+------+---------------------+ | 1 | Komal | 45,65,47,65,45 | 267 | 53.4 | 2008-12-02 16:08:00 | | 2 | Ajay | 46,56,56,53,56 | 267 | 53.4 | 2008-12-02 16:08:00 | | 3 | Rakesh | 67,57,37,67,63 | 291 | 58.2 | 2008-12-02 16:08:00 | +--------+----------+----------------+-------+------+---------------------+
Query
The Select now ( ) provide the current date and time.
Select now(); |
Result
+---------------------+ | now() | +---------------------+ | 2008-12-02 16:09:34 | +---------------------+ |
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