How do I get the latest record in PostgreSQL?

Show off way: Windowing functions SELECT DISTINCT first_value(timestamp) OVER w, first_value(value) OVER w, first_value(card) OVER w FROM my_table WINDOW w AS (ORDER BY timestamp DESC);

How do I select the last row in SQL?

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!

How do I get the first and last record of a table in SQL?

To get the first and last record, use UNION. LIMIT is also used to get the number of records you want.

How can I get the latest record in database based on datetime?

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 to select the last record in PostgreSQL?

In your situation, you do not know if the last matching value was on the previous row or on the row before it or even earlier. So, a different approach would be to find the ID of the last row with the matching value, then look that ID up to get the value for the final output – something like this:

How does the SELECT statement work in PostgreSQL?

In PostgreSQL, the SELECT statement is used to retrieve records from the database. You can use a WHERE clause in your query to retrieve only the records that match certain conditions. What if you wanted to retrieve just the most recent record by the date?

What is frame clause in PostgreSQL last value function?

The frame_clause defines the subset of rows in the current partition to which the LAST_VALUE () function is applied. We will use the products table created in the window function tutorial for the demonstration: Here are the contents of the data of the products table:

How to get the last record of a table?

So, you use a query to call the last register. Using your example: I hope this tip helps you. The last inserted record can be queried using this assuming you have the “id” as the primary key: Assuming every new row inserted will use the highest integer value for the table’s id.