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Results for “GROUP BY”

Small, practical examples. Search by task or narrow things down below.

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PostgresWindow analytics

Calculate a cumulative integer percentage

Postgres: Divide a running window sum by the complete total using a unique ordering key.

Postgres✓ Tested
SQLiteWindow analytics

Calculate a cumulative integer percentage

SQLite: Divide a running window sum by the complete total using a unique ordering key.

SQLite✓ Tested
PowerShellFile operations & integrity

Calculate a file’s SHA-256 digest

PowerShell: Get-FileHash hashes bytes without requiring the caller to load the whole file.

PowerShell✓ Tested
CSmall algorithms & bit operations

Calculate a fixed-window moving average

C: For this small window, sum each complete group and skip incomplete prefixes.

C✓ Tested
JavaEncoding & structured values

Calculate a SHA-256 content digest

Java: Hash UTF-8 bytes and format the result as lowercase hexadecimal.

Java✓ Tested
Arduino / CBinary values & packets

Calculate a simple packet XOR checksum

Arduino / C: XOR all payload bytes to produce a basic error-detection byte.

Arduino / C✓ Tested
PythonGetting Started

Calculate a simple total

Python: Multiply a unit price by a quantity, then add a delivery fee.

Python✓ Tested
C#Getting Started

Calculate a simple total

C#: Multiply a unit price by a quantity, then add a delivery fee.

C#✓ Tested
JavaGetting Started

Calculate a simple total

Java: Multiply a unit price by a quantity, then add a delivery fee.

Java✓ Tested
JavaScriptGetting Started

Calculate a simple total

JavaScript: Multiply a unit price by a quantity, then add a delivery fee.

JavaScript✓ Tested
TypeScriptGetting Started

Calculate a simple total

TypeScript: Multiply a unit price by a quantity, then add a delivery fee.

TypeScript✓ Tested
C++Getting Started

Calculate a simple total

C++: Multiply a unit price by a quantity, then add a delivery fee.

C++✓ Tested