These are best practices and guide lines to review any SQL program. The example given here is for COBOL.
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How to choose either UNION or CASE in the SQL query is best explained.
SQL quiz with multiple choice questions for DB2 mainframe programmers
SQL why you need Index and its complete tutorial
Follow these tips to learn SQL quickly. These are proven tips. Read more.
DB2 tips and solutions on day to day problems you will get straight to your inbox.
Top built-in functions added newly in DB2 version 11. Explained with examples.
Multiple nested query and Correlated sub-query both are different. Try to understand these with examples…
In DB2 database there are many ways to achieve performance. I explained one way here. Read more.