Results for “Input streams & redirection”
Small, practical examples. Search by task or narrow things down below.
Turn known group values into columns
Postgres: Conditional aggregation gives a portable pivot when the category set is known.
Postgres✓ Tested
Turn known group values into columns
SQLite: Conditional aggregation gives a portable pivot when the category set is known.
SQLite✓ Tested
Turn on the built-in LED
Configure the Uno’s LED pin as an output and drive it high.
LED_BUILTIN✓ Tested
Uncommit a local change and leave its edits unstaged
Git: A mixed reset resets the index while retaining working-file contents.
Git✓ Tested
Uncommit the latest local change while keeping it staged
Git: A soft reset moves the branch tip but preserves both index and working files.
Git✓ Tested
Understand default zero values
Understand default zero values using a complete Go program with explicit sample inputs.
Go✓ Tested
Undo a multi-row transfer atomically
SQL: The first transaction commits the fixtures. Rolling back the second transaction restores both sides of the attempted transfer.
SQL✓ Tested
Undo a multi-row transfer atomically
SQL Server: The first transaction commits the fixtures. Rolling back the second transaction restores both sides of the attempted transfer.
SQL Server✓ Tested
Undo a multi-row transfer atomically
Postgres: The first transaction commits the fixtures. Rolling back the second transaction restores both sides of the attempted transfer.
Postgres✓ Tested
Undo a multi-row transfer atomically
SQLite: The first transaction commits the fixtures. Rolling back the second transaction restores both sides of the attempted transfer.
SQLite✓ Tested
Undo only the work after a savepoint
SQL: After committing the fixtures, roll back a trial change while keeping earlier work in the second transaction.
SQL✓ Tested
Undo only the work after a savepoint
SQL Server: After committing the fixtures, roll back a trial change while keeping earlier work in the second transaction.
SQL Server✓ Tested