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SQL ServerSubqueries & ranked selection

Return all rows tied for the maximum in a group

SQL Server: An equality comparison with a grouped maximum retains ties rather than choosing one arbitrary row.

SQL Server✓ Tested
PostgresSubqueries & ranked selection

Return all rows tied for the maximum in a group

Postgres: An equality comparison with a grouped maximum retains ties rather than choosing one arbitrary row.

Postgres✓ Tested
SQLiteSubqueries & ranked selection

Return all rows tied for the maximum in a group

SQLite: An equality comparison with a grouped maximum retains ties rather than choosing one arbitrary row.

SQLite✓ Tested
PostgresRows & writes

Return an inserted row

Read generated data directly from INSERT.

RETURNING✓ Tested
jQueryTraversal & selection

Return to the previous collection in a chain

jQuery: end restores the selection before the last traversal operation.

jQuery✓ Tested
SQLReporting & grouped calculations

Return zero for a sum over no rows

SQL: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.

SQL✓ Tested
SQL ServerReporting & grouped calculations

Return zero for a sum over no rows

SQL Server: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.

SQL Server✓ Tested
PostgresReporting & grouped calculations

Return zero for a sum over no rows

Postgres: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.

Postgres✓ Tested
SQLiteReporting & grouped calculations

Return zero for a sum over no rows

SQLite: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.

SQLite✓ Tested
jQueryAnimation completion

Reveal a collapsed panel with a slide

jQuery: slideDown animates the panel’s vertical dimensions.

jQuery✓ Tested
SQL ServerTransactions & tables

Roll back a trial update

Group a change in a transaction and undo it.

transaction✓ Tested
PowerShellDates & numeric validation

Round a decimal with a chosen midpoint rule

PowerShell: Use decimal input and an explicit rounding policy for a reproducible decimal result.

PowerShell✓ Tested