find the sid of each student who takes all but one cs course

How do you count the number of students in a course?

Each condition in the having clause counts the number of students taking the particular courses. The > 0 says that there is at least one. If you want to add a third or fourth set of courses, that is very easy by adding more conditions in the HAVING clause.

How to add a third set of courses to a course?

Each condition in the having clause counts the number of students taking the particular courses. The > 0 says that there is at least one. If you want to add a third or fourth set of courses, that is very easy by adding more conditions in the HAVING clause. Thanks for contributing an answer to Stack Overflow!

How many courses can a single student take?

One Student can take one or many courses. I would like to find the name of Students registered in only one course. Have you tried something - like reading a manual or browsing some "learn SQL" websites?

Does left join also include students who are not in any course?

won't left join also include students who are not in any course ? @snyder Yes, you're right, have to change COUNT (*) to COUNT (r.course_id) when using left join. But why using an Outer join at all when an Inner join already returns the requested result set?

Which of the following query will find all unique students who have taken more than one course?

Q6) Which of the following query will find all the unique students who have taken more than one course? Option D would be a right option. This query will first apply self join on enrolled table and then it evaluate the condition e1. sid = e2.

What will be the query to display the courses in which number of students enrolled is more than 5?

To get the number of students who are registered for more than 5 courses you do this... SELECT COUNT(*) FROM REGISTRATION WHERE SEMESTER = 'GIVEN SEMESTER' GROUP BY CAMPUS, STUDENT_ID HAVING COUNT(*) > 5; You need to group by campus AND student id since student id is repeated for different campuses.

How do I count the number of students in SQL?

SELECT COUNT(column_name) counts the non-null values of column in the table. The total number of STU_DEPT values in above table are 7 but one of them is null. Since count(column_name) counts non-null values of the given column, thus the output is 6.

How can I get name and marks of top three students using SQL?

SELECT statement is used to get name and marks of top three students.SQL query is. SELECT Name, Marks FROM Student s1 where 3 <= (SELECT COUNT(*) FROM Students s2 WHERE s1.marks = s2.marks)SQL (Structured Query Language) ... Functions of SQL (Structured Query Language)

What is the query to increase the salary of each instructor in the Comp Sci department by 10%?

Increase the salary of each instructor in the Comp. Sci. department by 10%. update instructorset salary = salary * 1.10where dept name = 'Comp.

How do you subquery in SQL?

SQL - Sub QueriesSubqueries must be enclosed within parentheses.A subquery can have only one column in the SELECT clause, unless multiple columns are in the main query for the subquery to compare its selected columns.An ORDER BY command cannot be used in a subquery, although the main query can use an ORDER BY.More items...

How do I count by group in SQL?

The 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". The GROUP BY statement is often used with aggregate functions ( COUNT() , MAX() , MIN() , SUM() , AVG() ) to group the result-set by one or more columns.

How do I count numbers in SQL?

What to KnowCalculate number of records in a table: Type SELECT COUNT(*) [Enter] FROM table name;Identify number of unique values in a column: Type SELECT COUNT(DISTINCT column name) [Enter] FROM table name;More items...•

How do I count records in SQL?

SQL COUNT() FunctionSQL COUNT(column_name) Syntax. The COUNT(column_name) function returns the number of values (NULL values will not be counted) of the specified column: ... SQL COUNT(*) Syntax. The COUNT(*) function returns the number of records in a table: ... SQL COUNT(DISTINCT column_name) Syntax.

How do you get the name of a the student who got Max marks in each subject?

Select subjectid,max(marks) from students group by subjectid;chandinikiran. Answered On : Mar 2nd, 2010.SELECT s1.studentid, s1.subjectid, s2.mks FROM student s1, (SELECT s.subjectid, max(s.marks) as mks from student s group by s.subjectid ) s2WHERE s1.subjectid =s2.subjectid and s1.marks= s2.mksORDER BY s1.studentid.

How do you SELECT all data from student information table WHERE name starts from the letter R?

How to select all data from student table starting the name from letter 'r'?A. SELECT * FROM student WHERE name LIKE 'r%';SELECT * FROM student WHERE name LIKE '%r%';SELECT * FROM student WHERE name LIKE '%r';SELECT * FROM student WHERE name LIKE '_r%';

How will you retrieve all the data from the students table?

SELECT statements An SQL SELECT statement retrieves records from a database table according to clauses (for example, FROM and WHERE ) that specify criteria. The syntax is: SELECT column1, column2 FROM table1, table2 WHERE column2='value';