Results for “--rm”
Small, practical examples. Search by task or narrow things down below.
Return zero for a sum over no rows
SQL: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.
SQL✓ Tested
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
Return zero for a sum over no rows
Postgres: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.
Postgres✓ Tested
Return zero for a sum over no rows
SQLite: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.
SQLite✓ Tested
Roll back a trial update
Group a change in a transaction and undo it.
transaction✓ Tested
Rotate a rectangular box around its center
CSS: A ninety-degree transform swaps the visible bounding-box width and height.
CSS✓ Tested
Round a timestamp down to its month
Group dates by a calendar boundary.
date_trunc✓ Tested
Run a Compose service as a non-root user
Docker / Compose: user overrides the image’s default identity.
Docker / Compose✓ Tested
Run a Compose service as a numeric user
Docker / Compose: Run a Compose service as a numeric user in a small Compose file.
Docker / Compose✓ Tested
Run a first SELECT query
SQL: Return a literal value without creating a table.
SQL✓ Tested
Run a first SELECT query
SQL Server: Return a literal value without creating a table.
SQL Server✓ Tested
Run a first SELECT query
Postgres: Return a literal value without creating a table.
Postgres✓ Tested