Results for “SQL”
Small, practical examples. Search by task or narrow things down below.
Find records without any related rows
SQLite: NOT EXISTS avoids the NULL pitfalls of NOT IN when the subquery column can be missing.
SQLite✓ Tested
Find rows in the first result but not the second
SQL: EXCEPT calculates a distinct result-set difference.
SQL✓ Tested
Find rows in the first result but not the second
SQL Server: EXCEPT calculates a distinct result-set difference.
SQL Server✓ Tested
Find rows in the first result but not the second
SQLite: EXCEPT calculates a distinct result-set difference.
SQLite✓ Tested
Find rows shared by two query results
SQL: INTERSECT compares complete selected rows and removes duplicates.
SQL✓ Tested
Find rows shared by two query results
SQL Server: INTERSECT compares complete selected rows and removes duplicates.
SQL Server✓ Tested
Find rows shared by two query results
SQLite: INTERSECT compares complete selected rows and removes duplicates.
SQLite✓ Tested
Find the second-highest distinct value
SQL: Select the maximum below the overall maximum to skip ties at the top.
SQL✓ Tested
Find the second-highest distinct value
SQL Server: Select the maximum below the overall maximum to skip ties at the top.
SQL Server✓ Tested
Find the second-highest distinct value
SQLite: Select the maximum below the overall maximum to skip ties at the top.
SQLite✓ Tested
Generate every combination of two sets
SQL: CROSS JOIN creates one result per possible pair, so the output size is the product of the input sizes.
SQL✓ Tested
Generate every combination of two sets
SQL Server: CROSS JOIN creates one result per possible pair, so the output size is the product of the input sizes.
SQL Server✓ Tested