How do I select latest timestamp in SQL?

How do I select latest timestamp in SQL?

SELECT sensorID,timestamp,sensorField1,sensorField2 FROM sensorTable s1 WHERE timestamp = (SELECT MAX(timestamp) FROM sensorTable s2 WHERE s1. sensorID = s2. sensorID) ORDER BY sensorID, timestamp; Pretty self-explaining I think, but here’s more info if you wish, as well as other examples.

How do I get the latest date data in SQL?

1 Answer

1. select t.username, t.date, t.value.
2. from MyTable t.
3. inner join (
4. select username, max(date) as MaxDate.
5. from MyTable.
6. group by username.
7. ) tm on t.username = tm.username and t.date = tm.MaxDate.

How do I display the latest record in SQL?

16 Answers to get the last row of a SQL-Database use this sql string: SELECT * FROM TableName WHERE id=(SELECT max(id) FROM TableName); Output: Last Line of your db!

Does Max function work on timestamp?

> max function on it. You can do it with any other date types (date, > timespan, etc.) but not with timestamp.

What is Max timestamp?

The maximum value of a 32-bit integer is 2,147,483,647. If you add +1 to that, you get -2,147,483,647. 2,147,483,647 seconds from 01-01-1970 00:00:00 is January 19, 2038. If you add one more second, you get a date somewhere in 1902.

What is the max date in Oracle?

DATE, TIME, and TIMESTAMP limitations

Value	Limit
Largest DATE value	9999-12-31
Smallest TIME value	00:00:00
Largest TIME value	24:00:00
Smallest TIMESTAMP value	0001-01-01-00.00.00.000000

How would you optimize a query or stored procedure?

Improve stored procedure performance in SQL Server

1. Use SET NOCOUNT ON.
2. Use fully qualified procedure name.
3. sp_executesql instead of Execute for dynamic queries.
4. Using IF EXISTS AND SELECT.
5. Avoid naming user stored procedure as sp_procedurename.
6. Use set based queries wherever possible.
7. Keep transaction short and crisp.

How can find max and min date in SQL?

SQL MIN() and MAX() Functions

1. SELECT MIN(column_name) FROM table_name. WHERE condition;
2. SELECT MAX(column_name) FROM table_name. WHERE condition;
3. Example. SELECT MIN(Price) AS SmallestPrice. FROM Products;
4. Example. SELECT MAX(Price) AS LargestPrice. FROM Products;

What is Oracle day?

Oracle Day by Day is the first enterprise analytic app that learns what you are interested in, when and where you are interested in it, and who you like to share and collaborate with.

What is Oracle Database date?

Dates in Oracle Database. Oracle database stores dates in an internal numeric format, representing the century, year, month, day, hours, minutes, and seconds. The default display and input format for any date is DD-MON-YY(You can change it). Valid Oracle dates are between January 1, 4712 B.C. and December 31, 9999 .

How to get current time in milliseconds in Python?

In this post, we will see how to get the current time in milliseconds since the Epoch in Python. 1. time.time () function The standard solution to get the current time since the Epoch is using time.time () function. It returns time in seconds which can be easily converted into milliseconds as shown below.

Is there a timestamp datatype?

Storage and ranges

DATE. Use the DATE data type to store simple calendar dates without timestamps.

TIME. TIME is an alias of TIME WITHOUT TIME ZONE.

TIMETZ. TIMETZ is an alias of TIME WITH TIME ZONE.

TIMESTAMP. TIMESTAMP is an alias of TIMESTAMP WITHOUT TIME ZONE.

TIMESTAMPTZ. TIMESTAMPTZ is an alias of TIMESTAMP WITH TIME ZONE.