Using SQL CASE Expressions for Data Aggregation and Conditional Updates

This article explains the two forms of SQL CASE expressions, demonstrates how to use CASE for concise data aggregation and conditional updates, and provides practical examples with customer and order tables to simplify queries and avoid pitfalls.

Casedata analysisdatabase

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Using SQL CASE Expressions for Data Aggregation and Conditional Updates

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Nov 10, 2020 · Backend Development

Shell Script Conditional Structures: Using if and case Statements

This article introduces shell script conditional structures, explains the syntax of if (single, double, and multi-branch) and case statements, and provides step‑by‑step examples including a grading script and a start/stop/restart command script with full Bash code.

CaseConditionalIf

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Shell Script Conditional Structures: Using if and case Statements

ITPUB

Sep 12, 2017 · Operations

Master Linux Shell Flow Control: If, For, While, Case & Select with Examples

This guide explains Linux shell's flow‑control constructs—including conditional if/elif/else, loops (for, while, until), and selection statements (case, select) —by detailing their syntax, usage rules, and providing complete script examples that demonstrate each construct in action.

CaseFlow ControlIf

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Master Linux Shell Flow Control: If, For, While, Case & Select with Examples