Results for “generated column”
Small, practical examples. Search by task or narrow things down below.
Number a sorted result
Assign a row number without changing stored data.
row_number✓ Tested
Number rows within each group
Assign ordered row numbers with a window function.
row_number✓ Tested
Page an ordered result
Skip rows and fetch a bounded page.
OFFSET✓ Tested
Pair employees with their managers
SQL: Alias a table twice to represent two different roles in one relationship.
SQL✓ Tested
Pair employees with their managers
SQL Server: Alias a table twice to represent two different roles in one relationship.
SQL Server✓ Tested
Pair employees with their managers
Postgres: Alias a table twice to represent two different roles in one relationship.
Postgres✓ Tested
Pair employees with their managers
SQLite: Alias a table twice to represent two different roles in one relationship.
SQLite✓ Tested
Place missing values after known values portably
SQL: A CASE sort key controls NULL placement without relying on engine-specific defaults.
SQL✓ Tested
Place missing values after known values portably
SQL Server: A CASE sort key controls NULL placement without relying on engine-specific defaults.
SQL Server✓ Tested
Place missing values after known values portably
Postgres: A CASE sort key controls NULL placement without relying on engine-specific defaults.
Postgres✓ Tested
Place missing values after known values portably
SQLite: A CASE sort key controls NULL placement without relying on engine-specific defaults.
SQLite✓ Tested
Rank tied scores with competition gaps
SQL: RANK leaves a gap after tied rows, unlike DENSE_RANK.
SQL✓ Tested