The ORDER BY clause is invalid in views, inline functions, derived tables, subqueries, and common table expressions, unless TOP, OFFSET or FOR XML is also specified.
Can I use ORDER BY in view SQL?
The ORDER BY clause is not valid in views, inline functions, derived tables, and subqueries, unless either the TOP or OFFSET and FETCH clauses are also specified.
Why can’t we put ORDER BY inside the view?
Views behave like tables whose contents are determined by the results of a query. Tables don’t have order; they’re just bags of rows. Therefore, views don’t have order either.
Can we use ORDER BY in view in Oracle?
2 Answers. You would need an order by on the outer query to guarantee that the rows are returned in the order you want. If you run a select * from view query against the view without a where clause, it is likely that the rows would be returned in the order defined in the order by .
Can we use ORDER BY in inner query?
A Subquery or Inner query or a Nested query is a query within another SQL query and embedded within the WHERE clause. … An ORDER BY command cannot be used in a subquery, although the main query can use an ORDER BY.
Is view read only?
Unlike base tables, VIEW s are either updatable or read-only, but not both. … INSERT , UPDATE , and DELETE are not allowed on read-only VIEW s, but you can change their base tables, as you would expect.
Is SQL ORDER BY stable?
The ORDER BY clause contains a column or combination of columns that are guaranteed to be unique. The simplest way to understand that a sort is not stable is to go back to the definition of a table. Tables are inherently unordered in SQL. So, there is no ordering to fall back on for “stability”.
Can view be created from multiple tables?
Views can be created from a single table, multiple tables or another view. To create a view, a user must have the appropriate system privilege according to the specific implementation.
How do you sort data without using ORDER BY clause in SQL Server?
- Use XML output and apply server-side XSLT transformation (through CLR for instance) with <xsl:sort> .
- Use stored procedure to produce sorted list in one text return value.
- Write own SQL proxy client replacing — HIDDEN MESSAGE with ORDER BY .
How do I change the view in SQL?
To modify a view
- In Object Explorer, click the plus sign next to the database where your view is located and then click the plus sign next to the Views folder.
- Right-click on the view you wish to modify and select Design.
What does ORDER BY 2 desc mean in SQL?
If you prefer, you can use the positions of the column in the ORDER BY clause. … SELECT name, credit_limit FROM customers ORDER BY 2 DESC, 1; In this example, the position of name column is 1 and credit_limit column is 2. In the ORDER BY clause, we used these column positions to instruct the Oracle to sort the rows.
What is ORDER BY 1 desc in SQL?
This: ORDER BY 1. …is known as an “Ordinal” – the number stands for the column based on the number of columns defined in the SELECT clause. In the query you provided, it means: ORDER BY A.PAYMENT_DATE.
What is ORDER BY 2 in SQL?
SELECT first_name, last_name FROM sales.customers ORDER BY 1, 2; In this example, 1 means the first_name column and 2 means the last_name column. Using the ordinal positions of columns in the ORDER BY clause is considered a bad programming practice for a couple of reasons.
Can we use ORDER BY in subquery mysql?
Rows in a table (or in a subquery in the FROM clause) do not come in any specific order. That’s why the optimizer can ignore the ORDER BY clause that you have specified. In fact, SQL standard does not even allow the ORDER BY clause to appear in this subquery (we allow it, because ORDER BY … LIMIT …
Can I use group by in subquery?
You can use group by in a subquery, but your syntax is off.
How do you ORDER BY Union all?
Combining ORDER BY and UNION
- The columns in the ORDER BY list must be a subset of the columns in the select list of the left side of the union.
- All the columns in the ORDER BY list must be sorted in ascending order and they must be an in-order prefix of the columns in the target list of the left side of the UNION.