How do I get top 1 records in SQL?

The SQL SELECT TOP Clause

  1. SQL Server / MS Access Syntax: SELECT TOP number|percent column_name(s) FROM table_name.
  2. MySQL Syntax: SELECT column_name(s) FROM table_name.
  3. Oracle 12 Syntax: SELECT column_name(s) FROM table_name.
  4. Older Oracle Syntax: SELECT column_name(s)
  5. Older Oracle Syntax (with ORDER BY): SELECT *

What does SELECT top 1 mean in SQL?

The TOP 1 means to only return one record as the result set. which record is returned, depends on the column that is specified in the order by clause. If you want to find the record with the minimum value for a particular column, you would query the record with the ORDER BY being ascending (ASC).

How do you SELECT the first row of each unique value of a column?

Generally, here is how to select only the first row for each unique value of a column:

  1. Navigate to the Data tab and tap on Advanced under Sort & Filter.
  2. In the pop-up catalog, include the list range as the first column and check Unique Records Only.
  3. Click OK to select the first row with unique values.

What does +1 do in SQL?

The statement ‘select 1’ from any table name means that it returns only 1. For example, If any table has 4 records then it will return 1 four times. Let us see an example.

How do you SELECT top 1 record in each group in SQL?

First, you need to write a CTE in which you assign a number to each row within each group. To do that, you can use the ROW_NUMBER() function. In OVER() , you specify the groups into which the rows should be divided ( PARTITION BY ) and the order in which the numbers should be assigned to the rows ( ORDER BY ).

How do you SELECT Top 10 records from each category in SQL?

Selecting a top n records for each category from any table, can be done easily using row_number function which generates a sequential integer to each row within a partition of a result set.

How do you SELECT the first value in SQL?

We could use FIRST_VALUE() in SQL Server to find the first value from any table. FIRST_VALUE() function used in SQL server is a type of window function that results in the first value in an ordered partition of the given data set.

How do I SELECT distinct one column?

Adding the DISTINCT keyword to a SELECT query causes it to return only unique values for the specified column list so that duplicate rows are removed from the result set. Since DISTINCT operates on all of the fields in SELECT’s column list, it can’t be applied to an individual field that are part of a larger group.

How do I SELECT only one row in a table in SQL?

While the table name is selected type CTRL + 3 and you will notice that the query will run and will return a single row as a resultset. Now developer just has to select the table name and click on CTRL + 3 or your preferred shortcut key and you will be able to see a single row from your table.

What does select 1 from dual do?

In your case, SELECT 1 FROM DUAL; will simply returns 1 . You need it because the INSERT ALL syntax demands a SELECT clause but you are not querying the input values from a table.

What is the difference between select * and select 1?

Select * from any table will fetch and display all the column in that table, while Select 1 from any table will display one row with 1 without any column name.

How many select Top Records for each year in PHP?

3 SELECT TOP record for each year Related 2773 How can I prevent SQL injection in PHP? 1664 How do I perform an IF…THEN in an SQL SELECT? 3034

How to get the corredct value of 1 in SQL Server?

To get the corredct value of “1” in this case, I had to also order on USERID. This is default behavior in all SQL – there’s no order guarantee if there’s no ORDER BY clause, and in this case you’re not ordering by pertinent data so the database arbitrarily picks a row.

What is the correct order of rows in top?

If you check the documentation for TOP: TOP (Transact-SQL), specifically the first two paragraphs under Remarks, it explicitly states that TOP does not order the rows. As such, the order you’ve imposed yourself is the one used. Unfortunately, your ordering is incomplete.