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How do I get descending order in PostgreSQL?
When sorting your result set in descending order, you use the DESC attribute in your ORDER BY clause as follows: SELECT last_name, first_name, city FROM contacts WHERE first_name = ‘Joe’ ORDER BY last_name DESC; This PostgreSQL ORDER BY example would return all records sorted by the last_name field in descending order.
Which is the default order of sort in ORDER BY clause?
Ascending is the default sort order in an ORDER BY clause.
Which is the correct order of occurrence in a SQL statement?
1) Which of the following is the correct order of occurrence in a typical SQL statement? “Where” always comes before “group by” and “having” always comes after “group by”.
What is the correct order of SQL expression?
The correct answer is Select, where, group by, having.
When to use ORDER BY clause in PostgreSQL?
The PostgreSQL ORDER BY clause is used to sort the data in ascending or descending order, based on one or more columns. You can use more than one column in the ORDER BY clause.
How is the where clause evaluated in PostgreSQL?
The query returns only rows that satisfy the condition in the WHERE clause. In other words, only rows that cause the condition evaluates to true will be included in the result set. PostgreSQL evaluates the WHERE clause after the FROM clause and before the SELECT and ORDER BY clause:
Which is the Order of evaluation in PostgreSQL?
PostgreSQL evaluates the clauses in the SELECT statment in the following order: FROM, SELECT, and ORDER BY: Due to the order of evaluation, if you have a column alias in the SELECT clause, you can use it in the ORDER BY clause.
How to sort by relative position in PostgreSQL?
You can also use the PostgreSQL ORDER BY clause to sort by relative position (ordinal position) in the result set, where the first field in the result set is 1. The next field is 2, and so on. For example: SELECT last_name, first_name, city FROM contacts WHERE first_name = ‘Jane’ ORDER BY 3 DESC;