Results for “Functions & data types”
Small, practical examples. Search by task or narrow things down below.
Join a parent to pre-aggregated totals
SQL: Aggregate the child rows first to produce at most one joined row per parent.
SQL✓ Tested
Join a parent to pre-aggregated totals
SQL Server: Aggregate the child rows first to produce at most one joined row per parent.
SQL Server✓ Tested
Join a parent to pre-aggregated totals
Postgres: Aggregate the child rows first to produce at most one joined row per parent.
Postgres✓ Tested
Join a parent to pre-aggregated totals
SQLite: Aggregate the child rows first to produce at most one joined row per parent.
SQLite✓ Tested
Join through a lookup table
SQL: Use explicit aliases and join keys when enriching records through two relationships.
SQL✓ Tested
Join through a lookup table
SQL Server: Use explicit aliases and join keys when enriching records through two relationships.
SQL Server✓ Tested
Join through a lookup table
Postgres: Use explicit aliases and join keys when enriching records through two relationships.
Postgres✓ Tested
Join through a lookup table
SQLite: Use explicit aliases and join keys when enriching records through two relationships.
SQLite✓ Tested
Keep both matching and rejected values
TypeScript: Use two explicit outputs when a caller needs both sides of a classification.
TypeScript✓ Tested
Keep function-local assignments separate from caller state
PowerShell: Ordinary function assignments create local variables rather than replacing the caller’s variable.
PowerShell✓ Tested
Keep parent rows while filtering joined children
SQL: Put a child filter in ON when unmatched parents must remain in the result.
SQL✓ Tested
Keep parent rows while filtering joined children
SQL Server: Put a child filter in ON when unmatched parents must remain in the result.
SQL Server✓ Tested