What technique is used to retrieve data from more than one
table in a single SQL statement?
Answer Posted / ajay rana
join techniques is used to to retrieve data from more than
one table in a single SQL statement.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is ibm db2 database?
Is db2 a mainframe database?
What is bind in db2?
I HAVE 500 ROW TO UPDATE I WOULD LIKE TO USE ROLLBACK ALONG WITH COMMIT.WHAT IS THE SYNTAX TO CODE COMMIT AND ROLLBACK FOR EVERY 100 ROWS.AND HOW THE CURSOR ROLLBACK TO THE LAST COMMITTING POINT.
What is db2 bind process?
What is the physical storage length of time data type?
Who uses db2?
SET is the ANSI standard for variable assignment, SELECT is not. SET can only assign one variable at a time, SELECT can make multiple assignments at once. If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one) When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value) As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does give it a slight speed advantage over SET.
How to fetch the last row from the table in SQL (db2)?
What is reorg?
For a db2 column that is being defined as decimal (11, 2), discuss the cobol picture clause.
How do you stop a db2 database in linux?
What types of tables are there in the db2 database?
How is the value function used?
What is db2?