1) How would you find out the total number of rows in a DB2 table?
Use SELECT COUNT(*) … in db2 query
2) How do you eliminate duplicate values in DB2 SELECT ?
Use SELECT DISTINCT … in db2 query
3) How do you select a row using indexes in DB2?
Specify the indexed columns in the WHERE clause of db2 query.
4) How do you find the maximum value in a column in db2?
Use SELECT MAX(…) .. in db2 query
5) How do you retrieve the first 5 characters of FIRSTNAME column of DB2 table EMP ?
SQL Query : SELECT SUBSTR(FIRSTNAME,1,5) FROM EMP;