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- Is ORDER BY NULL first or last in SQL?
- When data is sorted in descending order are NULL values listed first or last?
- What does ORDER BY 0 means in SQL?
- What is the default sorting order in SQL with NULL values?
Is ORDER BY NULL first or last in SQL?
If you sort a column with NULL values in ascending order, the NULLs will come first. Alternatively, if you add a DESC keyword to get a descending order, NULLs will appear last.
When data is sorted in descending order are NULL values listed first or last?
In a descending sort, DESC NULLS FIRST specifies that rows with a NULL value in the sort key column precede non-NULL rows in the sorted result set. The NULLS LAST keywords instruct the database server to put NULL values last in the sorted query results.
What does ORDER BY 0 means in SQL?
The order statement generates a 'virtual field' that contains NULL or 0 based on the case condition. The ORDER BY is applied based on that virtual field. The zero value in the order by precedes the NULL value. That's all, it's a way to set NULLs of the field1 at the end of the order list.
What is the default sorting order in SQL with NULL values?
The SQL standard does not explicitly define a default sort order for Nulls. Instead, on conforming systems, Nulls can be sorted before or after all data values by using the NULLS FIRST or NULLS LAST clauses of the ORDER BY list, respectively. This is the case for Oracle RDBMS.
