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Small, practical examples. Search by task or narrow things down below.
Report duplicate business values and their frequency
SQL: Group by a candidate business key and retain only groups with multiple rows.
SQL✓ Tested
Report duplicate business values and their frequency
SQL Server: Group by a candidate business key and retain only groups with multiple rows.
SQL Server✓ Tested
Report duplicate business values and their frequency
Postgres: Group by a candidate business key and retain only groups with multiple rows.
Postgres✓ Tested
Report duplicate business values and their frequency
SQLite: Group by a candidate business key and retain only groups with multiple rows.
SQLite✓ Tested
Report progress before completion
jQuery: notify calls registered progress handlers while the deferred is pending.
jQuery✓ Tested
Represent a decimal quantity with a scaled integer
Arduino / C: Integer hundredths avoid floating-point storage for fixed-precision values.
Arduino / C✓ Tested
Represent a hierarchy with nested lists
HTML: Place the nested list inside its parent list item to preserve the hierarchy.
HTML✓ Tested
Represent an absent result with optional
C++: value_or supplies a default without requiring a sentinel inside the value domain.
C++✓ Tested
Represent an enabled state
Arduino / C: Represent an enabled state on an Uno with the Serial Monitor set to 9600 baud.
Arduino / C✓ Tested
Require a checkbox to be selected
HTML: A required checkbox is invalid until that individual control is checked.
HTML✓ Tested
Require a nonempty text value
HTML: The required attribute makes an empty text control fail native constraint validation.
HTML✓ Tested
Require a value with NOT NULL
SQL: Declare required fields at the database boundary, not only in application validation.
SQL✓ Tested