How does multiple ORDER BY work in SQL?
3 Answers. It orders by Country, but if some rows have the same Country, it orders them by CustomerName. It orders by country first. If the countries match, then it orders by customer name.
How do I ORDER BY two columns?
After the ORDER BY keyword, add the name of the column by which you’d like to sort records first (in our example, salary). Then, after a comma, add the second column (in our example, last_name ). You can modify the sorting order (ascending or descending) separately for each column.
How do I create a secondary sort in SQL?
When sorting your result set using the SQL ORDER BY clause, you can use the ASC and DESC attributes in a single SELECT statement. This example would return the records sorted by the category_id field in descending order, with a secondary sort by product_name in ascending order.
Can we use both ORDER BY and group by?
Both GROUP BY and ORDER BY are clauses (or statements) that serve similar functions; that is to sort query results. However, each of these serve very different purposes; so different in fact, that they can be employed separately or together.
How do you order things in SQL?
The SQL ORDER BY Keyword
The ORDER BY keyword is used to sort the result-set in ascending or descending order. The ORDER BY keyword sorts the records in ascending order by default. To sort the records in descending order, use the DESC keyword.
How do I order columns in SQL?
To change the column order
- In Object Explorer, right-click the table with columns you want to reorder and click Design.
- Select the box to the left of the column name that you want to reorder.
- Drag the column to another location within the table.
How do I query two columns in SQL?
To select multiple columns from a table, simply separate the column names with commas! For example, this query selects two columns, name and birthdate , from the people table: SELECT name, birthdate FROM people; Sometimes, you may want to select all columns from a table.
How do you put condition in order in SQL?
SELECT column-list FROM table_name [WHERE condition] [ORDER BY column1, column2, .. columnN] [ASC | DESC]; You can use more than one column in the ORDER BY clause. Make sure whatever column you are using to sort that column should be in the column-list.
What is ORDER BY 3 in SQL?
Order by 3 DESC. In this query, column birthdate is at the 3rd position; therefore, we can use three in the Order by clause to sort results on this column data. Note: I would not recommend using column position in Order By clause. You should always use a column name in Order by clause.
Which query is used to get the current date?
MySQL SYSDATE() Function
The SYSDATE() function returns the current date and time. Note: The date and time is returned as “YYYY-MM-DD HH:MM:SS” (string) or as YYYYMMDDHHMMSS (numeric).
What is query for second highest salary?
We can nest the above query to find the second largest salary. select *from employee group by salary order by salary desc limit 1,1; There are other ways : SELECT name, MAX(salary) AS salary FROM employee WHERE salary IN (SELECT salary FROM employee MINUS SELECT MAX(salary) FROM employee);
Is GROUP BY necessary for HAVING?
So having doesn’t require group by . Having is applied after the aggregation phase and must be used if you want to filter aggregate results.
Does HAVING come after GROUP BY?
After Grouping the data, you can filter the grouped record using HAVING Clause. HAVING Clause returns the grouped records which match the given condition. You can also sort the grouped records using ORDER BY.
What is GROUP BY in SQL?
The GROUP BY Statement in SQL is used to arrange identical data into groups with the help of some functions. i.e if a particular column has same values in different rows then it will arrange these rows in a group. … GROUP BY clause is used with the SELECT statement.