Interested to Buy Any Domain ? << Click Here >> for more details...
what is the difference between where clause and having clause
- 2 Answers
- 8877 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
WHERE clause is used to impose condition on SELECT
statement as well as single row function and is used before
GROUP BY clause where as HAVING clause is used to impose
condition on GROUP Function and is used after GROUP BY
clause in the query
WHERE applies to rows HAVING applies to summarized rows
(summarized with GROUP BY) if you wanted to find the
average salary in each department GREATER than 333 you
would code:
SELECT DEPARTMENT AVG(SALARY)
FROM EMP
WHERE DEPARTMENT > 333
GROUP BY DEPARTMENT
IF you then wanted to filter the intermediate result to
contain departments where the average salary was greater
that 50 000 you would code:
SELECT DEPARTMENT AVG(SALARY)
FROM EMP
WHERE DEPARTMENT > 333
GROUP BY DEPARTMENT
HAVING AVG(SALARY) > 50000.
Where executes first
GROUP BY next
and finally HAVING
| Is This Answer Correct ? | 9 Yes | 0 No |
Answer / selvam a
HAVING clause can only compare a built in function but WHERE
clause can compare column name.
| Is This Answer Correct ? | 0 Yes | 0 No |
When would you prefer to use VARCHAR?
What is a PLAN table? How will you use it? Give the various fields of PLAN table?
max number of columns in a db2 table?
What is a cursor in programming?
What is the maximum size of a char data type in db2?
i tried to copy some records from microsoft excel to as-400 physical file through "Bosanova" emulation. Out of 14000 records only 12000 records copies and subsequently programe started to hang. Then, i closed the program forcefully. I did' under stand the problem. Also when i try to compile the physical file it is showing as "The file in use". How to overcome this problem?
What is null in db2?
What is the syntax for seeing the columns and data types of a table in the db2 database?
Select empno, sal from emptbl where empno < 101.By this query can we fetch first 100 recs? where empno is primary key.It won't throw -811 error? if it wont,then what is use of cursor technique while fetching first 100 recs. Please need more clarification.
i hav created a program and moved to production but failed to create the table which is been used in the program. the program shows error as soon as it is moved or installed in production or shows error during its runtime. what is the sqlcode for this error
Which components manage deadlocks in db2?
what is Runstats? Whem will u choose to runatats?
COBOL 
