What is true about the result of a query without an ORDER BY clause?
without an ORDER BY clause, you will have not asked exactly for a particular order, and so the RDBMS will give you those rows in some order that (maybe) corresponds with some coincidental aspect of the query, based on whichever algorithm the RDBMS expects to produce the data the fastest.
What is default order of select query?
By default ORDER BY sorts the data in ascending order. We can use the keyword DESC to sort the data in descending order and the keyword ASC to sort in ascending order.
What is default order in SQL?
It depends on the user that, whether to order them in ascending or descending order. The default order is ascending. The SQL ORDER BY clause is used with the SQL SELECT statement. Note: SQL ORDER BY clause always come at the end of a SELECT statement.
Can a SELECT statement have no order by clause?
As I know, from the relational database theory, a select statement without an order by clause should be considered to have no particular order. But actually in SQL Server and Oracle (I’ve tested on those 2 platforms), if I query from a table without an order by clause multiple times, I always get the results in the same order.
Can you query a table without an ORDER BY clause?
But actually in SQL Server and Oracle (I’ve tested on those 2 platforms), if I query from a table without an order by clause multiple times, I always get the results in the same order. Does this behavior can be relied on? Anyone can help to explain a little? No, that behavior cannot be relied on.
How does select statement work in SQL Server?
Forces the SQL Server database to access the tables in a join in the specified order. If two tables are joined, the first table in the statement is always accessed first. This keyword is often combined with the forceNestedLoop keyword. Selects records exclusively for update.
When to use chosen in a SELECT statement?
This is typically used when the result of the select is passed on to another application object, for example, a query that performs the actual fetch. Chosen only if there are no posts. Forces a statement to run with Optimistic Concurrency Control even if a different value is set on the table.