Results for “rows”
Small, practical examples. Search by task or narrow things down below.
Treat an empty trimmed value as missing
SQLite: NULLIF converts an empty string to NULL before a fallback is applied.
SQLite✓ Tested
Turn a condition into a result label
SQL: Use CASE to describe stock availability for each row.
SQL✓ Tested
Turn a condition into a result label
SQL Server: Use CASE to describe stock availability for each row.
SQL Server✓ Tested
Turn a condition into a result label
Postgres: Use CASE to describe stock availability for each row.
Postgres✓ Tested
Turn a condition into a result label
SQLite: Use CASE to describe stock availability for each row.
SQLite✓ Tested
Turn known group values into columns
SQL: Conditional aggregation gives a portable pivot when the category set is known.
SQL✓ Tested
Turn known group values into columns
SQL Server: Conditional aggregation gives a portable pivot when the category set is known.
SQL Server✓ Tested
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
Underline meaningful text
CSS: Learn how to underline meaningful text in a complete browser example.
CSS✓ Tested
Understand later rules in the cascade
CSS: Learn how to understand later rules in the cascade in a complete browser example.
CSS✓ 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