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Can a SELECT query with no order be retrieved?
A select query with no order by does not retrieve the rows in any particular order. You have to have an order by to get an order. SQL Server does not have any default method for retrieving by insert order. You can do it, if you have the information in the row.
How to return rows in the order they were inserted?
You can do it, if you have the information in the row. The best way is a primary key identity column: Such a column is incremented as each row is inserted. However, this could have duplicates for simultaneous inserts. The key point, though, is that a select with no order by clause returns an unordered set of rows.
What happens when you omit serial column in PostgreSQL?
If you create a table with a serial column then if you omit the serial column when you insert data into the table PostgreSQL will use the sequence automatically and will keep the order. because I had mistakenly marked my gen_id function IMMUTABLE.
How to retrive rows by insert order in SQL Server?
SQL Server does not have any default method for retrieving by insert order. You can do it, if you have the information in the row. The best way is a primary key identity column:
When does sort not order correctly for integer string list?
In other words, when you ask “Sort does not order correctly for integer string list?” the simple answer is “Well, no, because when you sort as text, the integer part is never considered”. You’re performing a lexicographical sort (i.e. an alphabetical sort) since you are sorting strings, not ints.
Why does LINQ orderby not order correctly for integer string?
But LINQ OrderBy or SOrt inplace itself not ordering correctly : Following code can reproduce my issue : Here, SortedList is in following order : “1”,”100″,”12″ and deslist is “12”,”100″, “12” I am confused with the way with string comparison done in ordering by C#.
When to use the enumerable orderby method?
This method performs a stable sort; that is, if the keys of two elements are equal, the order of the elements is preserved. In contrast, an unstable sort does not preserve the order of elements that have the same key. In query expression syntax, an orderby (Visual C#) or Order By (Visual Basic) clause translates to an invocation of OrderBy.