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Results for “aggregation”

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

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SQLGetting Started

Filter groups after aggregation

SQL: Use HAVING to test a group’s calculated total.

SQL✓ Tested
SQL ServerGetting Started

Filter groups after aggregation

SQL Server: Use HAVING to test a group’s calculated total.

SQL Server✓ Tested
PostgresGetting Started

Filter groups after aggregation

Postgres: Use HAVING to test a group’s calculated total.

Postgres✓ Tested
SQLiteGetting Started

Filter groups after aggregation

SQLite: Use HAVING to test a group’s calculated total.

SQLite✓ Tested
PowerShellCollections & objects

Sum a collection

Calculate a total with Measure-Object.

Measure-Object✓ Tested
SQLSubqueries & ranked selection

Build a query from several named stages

SQL: Separate row selection from aggregation using two common table expressions.

SQL✓ Tested
SQL ServerSubqueries & ranked selection

Build a query from several named stages

SQL Server: Separate row selection from aggregation using two common table expressions.

SQL Server✓ Tested
PostgresSubqueries & ranked selection

Build a query from several named stages

Postgres: Separate row selection from aggregation using two common table expressions.

Postgres✓ Tested
SQLiteSubqueries & ranked selection

Build a query from several named stages

SQLite: Separate row selection from aggregation using two common table expressions.

SQLite✓ Tested
SQLReporting & grouped calculations

Turn known group values into columns

SQL: Conditional aggregation gives a portable pivot when the category set is known.

SQL✓ Tested
SQL ServerReporting & grouped calculations

Turn known group values into columns

SQL Server: Conditional aggregation gives a portable pivot when the category set is known.

SQL Server✓ Tested
PostgresReporting & grouped calculations

Turn known group values into columns

Postgres: Conditional aggregation gives a portable pivot when the category set is known.

Postgres✓ Tested