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  • Popular ROLLUP SQL query to apply on your data to group it quickly

    ROLLUP and grouping sets are two similar functions to apply on group of data. Most popular SQL query example to use ROLLUP. You can improve your SQL performance.

  • 3 Free Python Downloads – Here’re Links

    Ipython you complete open source software. You can download quickly to start learning.

  • Unix: Top Editor Commands to Schedule Job and More

    Unix cron top commands to use in scheduling jobs

  • Mainframe ISPF Commands (5 Of 5)

    How do I make columns 1-6 disappear from my ISPF editor screen?   A. Type ‘NUM ON COB’. These are the ‘COBOL numbers’ columns and the screen display will be from Col 9-80. 42. How do I make the numbers on Col 1-6 contiguous, i.e., the COBOL numbers A. Type ‘RENUM’. ISPF sometimes recommends you to do this.…

  • 2 More Ideas on COBOL Debugging

    Here’s a way how to debug COBOL program

  • Mainframe ISPF Commands(4 Of 5)

    1). How do I find for any non-numeric character? A. Use picture string ‘-’. 2). How do I find for any alphabetic character? A. Use picture string ‘@’. 3). How do I find for any uppercase alphabetic character? A. Use picture string ‘>’. 4). How do I find for any lowercase alphabetic character? A. Use picture string ‘<’. 5). How do I…

  • Grouping Sets: How to Simplify SQL Query

    THE GROUPING SETS option’s real usage is to make the union of two or more groups of rows into a single result set. Introduced in DB2V11. The best example given and explained to use it and improve your SQL Query. Grouping Sets in DB2 It is logically equivalent to the union of multiple subselects with…

  • What is EIB Storage Area in CICS

    The EIB is also called executive interface block. The name tells that it is a interface to calling module. So the every action will be updated in EIB fields in CICS. I have given the most frequently used fields to execute CICS programs for your ready reference.

  • Writing Transaction File to Master File in COBOL- 8 Tips

    COBOL-Master file-Transaction file. Many interviews these questions are asked in COBOL, transaction file and master file. Easy ideas I have given for your sure success in your interviews. MASTER FILE Master files contain the entire data of a particular application. For example, a master file may contain the entire data about the employees, payroll, or…

  • SQL Before Drop a Column Here are The Conditions to Check

    ALTER statement we can use in DB2 SQL query to drop a column. ALTER TABLE table_nameDROP COLUMN column_name But, there are lot other conditions involved, which column we can drop or not. The containing table space is not a universal table space. The table is a created global temporary table. The table is a system-period…

  • How to Write SQL to Create Global Variables

    Global variables new additions in Db2 v11 and how to create them read today.

  • How to Understand Cashback Rewards Program Quickly

    Benefit to cardholders if they use cashback rewards program. How this program works explained.