how to get current datetime in SQL?

Complete answer:

1. Is there a function available in SQL?
Yes, the SQL 92 spec, Oct 97, pg. 171, section 6.16 specifies this functions:

CURRENT_TIME       Time of day at moment of evaluation
CURRENT_DATE       Date at moment of evaluation
CURRENT_TIMESTAMP  Date & Time at moment of evaluation

2. It is implementation depended so each database has its own function for this?
Each database has its own implementations, but they have to implement the three function above if they comply with the SQL 92 specification (but depends on the version of the spec)

3. What is the function available in MySQL?

NOW() returns 2009-08-05 15:13:00  
CURDATE() returns 2009-08-05  
CURTIME() returns 15:13:00  

I always just use NOW():

INSERT INTO table (lastModifiedTime) VALUES (NOW())

http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_now

NOW() returns 2009-08-05 15:13:00

CURDATE() returns 2009-08-05

CURTIME() returns 15:13:00

I want my datetime, and I want it now()!

For MySQL, anyway.

For SQL Server use GetDate() or current_timestamp. You can format the result with the Convert(dataType,value,format). Tag your question with the correct Database Server.

1. GETDATE() or GETUTCDATE() are now superseded by the richer SYSDATETIME, SYSUTCDATETIME, and SYSDATETIMEOFFSET (in SQL 2008)
2. Yes, I don't think ANSI has ever declared anything, and so each manufacturer has their own.
3. That would be NOW()

Hope this helps...

Rob

Just an add on for SQLite you can also use

CURRENT_TIME
CURRENT_DATE
CURRENT_TIMESTAMP

for the current time, current date and current timestamp. You will get the same results as for SQL

sql sqlite

try this

SELECT CURTIME(); return 23:12:58

SELECT CURDATE(); return 2020-11-12

SELECT NOW(); return 2020-11-12 23:19:26

SELECT DAY(now()); return 12

SELECT DAYNAME(now()); return Thursday

Hope this would be helpful for you.