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Tag: sql

Difference between NVL and OR in SQL oracle

Hej guys, could someone explain to me difference between NVL() and OR in below query : Number of rows: 44937 and Number of rows: 44782 Why we have this difference: 155 rows? i built a few query based on nvl and notice that issue and going to switch to OR, but I really want to know, why it such a

Multi-parameter search with mysql and node.js

Let me preface by saying I’m very new to SQL (and back end design) in general. So for those annoyed with noob questions, please be gentle. BACKGROUND: I’m trying to build a product test database (storing test data for all our products) where I want a user to be able to refine a search to find test…

Mysql Group By age by range [closed]

Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago. Improve this question i need help, i need to create report like this the report is group by the age, but i can&#82…