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

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Docker / ComposeDockerfile patterns

Copy an artifact from an earlier build stage

Docker / Compose: A named stage can produce an artifact without copying its other files.

Docker / Compose✓ Tested
SQLRelationships & missing data

Find parents with at least two child rows

SQL: Use a correlated count when testing a per-parent threshold.

SQL✓ Tested
SQL ServerRelationships & missing data

Find parents with at least two child rows

SQL Server: Use a correlated count when testing a per-parent threshold.

SQL Server✓ Tested
PostgresRelationships & missing data

Find parents with at least two child rows

Postgres: Use a correlated count when testing a per-parent threshold.

Postgres✓ Tested
SQLiteRelationships & missing data

Find parents with at least two child rows

SQLite: Use a correlated count when testing a per-parent threshold.

SQLite✓ Tested
SQLReporting & grouped calculations

Group by more than one field

SQL: Each distinct combination of grouping fields produces its own row.

SQL✓ Tested
SQL ServerReporting & grouped calculations

Group by more than one field

SQL Server: Each distinct combination of grouping fields produces its own row.

SQL Server✓ Tested
PostgresReporting & grouped calculations

Group by more than one field

Postgres: Each distinct combination of grouping fields produces its own row.

Postgres✓ Tested
SQLiteReporting & grouped calculations

Group by more than one field

SQLite: Each distinct combination of grouping fields produces its own row.

SQLite✓ Tested
PythonGetting Started

Handle three possible outcomes

Python: Check high, normal and low values with an ordered conditional chain.

Python✓ Tested
C#Getting Started

Handle three possible outcomes

C#: Check high, normal and low values with an ordered conditional chain.

C#✓ Tested
JavaGetting Started

Handle three possible outcomes

Java: Check high, normal and low values with an ordered conditional chain.

Java✓ Tested