WebFeb 20, 2012 · 1. In case you're using this (good!) answer for your own purposes, remember that you will get no results at all if the subquery returns NULL, i.e. RESTAURANT_NO in … WebAug 16, 2015 · 2. If am not wrong you just need Order by and ROWNUM. select * from ( SELECT mark1,name FROM student Order by Mark1 desc ) Where ROWNUM = 1. or …
Difference between Having clause and Group by clause
WebFeb 28, 2024 · GROUP BY CUBE ( ) GROUP BY CUBE creates groups for all possible combinations of columns. For GROUP BY CUBE (a, b) the results has groups for unique values of (a, b), (NULL, b), (a, NULL), and (NULL, NULL). Using the table from the previous examples, this code runs a GROUP BY CUBE operation on Country and Region. SQL. WebJan 24, 2014 · No. They don't have to coexist, as proved by the fact that the following query in Oracle works: select * from dual having 1 = 1; Similarly, in PostgreSQL the following … how to remove chewing gum from skin
sql - Having clause without Group by - Stack Overflow
WebNov 7, 2024 · 1 Answer. HAVING can be used only with GROUP BY . For your query, you can use a where condition outside parentheses. SELECT * FROM (SELECT column0, … WebAug 30, 2024 · In SQL, you use the HAVING keyword right after GROUP BY to query the database based on a specified condition. Like other keywords, it returns the data that meet the condition and filters out the rest. The HAVING keyword was introduced because the WHERE clause fails when used with aggregate functions. So, you have to use the … WebThe SQL GROUP BY Statement. The GROUP BY statement groups rows that have the same values into summary rows, like "find the number of customers in each country". … how to remove chicken feathers