Results for “SQL”
Small, practical examples. Search by task or narrow things down below.
Normalize ASCII text to lowercase
SQLite: LOWER is useful for display normalization; indexed case-insensitive search depends on the database collation and schema.
SQLite✓ Tested
Normalize ASCII text to uppercase
SQL: UPPER changes character case under the database’s text rules.
SQL✓ Tested
Normalize ASCII text to uppercase
SQL Server: UPPER changes character case under the database’s text rules.
SQL Server✓ Tested
Normalize ASCII text to uppercase
SQLite: UPPER changes character case under the database’s text rules.
SQLite✓ 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
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
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
Rank tied scores with competition gaps
SQL Server: RANK leaves a gap after tied rows, unlike DENSE_RANK.
SQL Server✓ Tested