Where besides the DB2 catalog is database object
information stored by DB2?
Answer / s
Datbase object information is stored in a internal format
in DBD, Database Descriptors.
Is This Answer Correct ? | 2 Yes | 0 No |
Can a Db2 table data be retrived through JCL?
cobol-db2 runjcl please?
Hi i need to write a query on the following requirement. SELECT COMM_TEXT INTO :WS_MIKM_COMM_TEXT FROM MPIPROD.MIKMV01 WHERE ACCOUNT_NO = :WFD_ACCOUNT_NO AND (SUBSTR(COMM_TEXT,1,39) = :WS_COMMENT_TEXT AND SUBSTR(COMM_TEXT,47,14) = :WS_DENY_DESC) OR (SUBSTR(COMM_TEXT,1,39) = :WS_COMMENT_TEXT) The above query is to be modified. The requirement is if both the fields are equal then that has to be given priority. In the above query if it satisfies any one it comes out without checking if both being equal is possible.
What is the difference between TYPE 1 index & TYPE 2 index
What is the use of db2 optimizer?
Which catalog tables contain authorization information?
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.
Explain db2.
What is the role of data manager in the db2 database?
What is access path in db2?
what is sql abend code -801,-802?
what is the certification that has a good value for a practioner in mainframes but not habving much knowledge on db2 related stuff?